New Holland LS140 Workshop Manual
  1. Manuals
  2. Brands
  3. New Holland Manuals
  4. Compact Loader
  5. LS140
  6. Workshop manual

New Holland LS140 Workshop Manual

Hide thumbs Also See for LS140:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
Table of Contents

Advertisement

Quick Links

Download this manual
Workshop
Manual
Print
No.
6
0
4
1 .
3
6 .
0
2
English
-
P
r
n i
e t
d
n i
I
a t
y l
LS140
LS150
LS140
LS150
Workshop
Manual
P
R
O
V
E
N
Copyright © New Holland
P
E
R
F
O
R
M
A
N
C
E

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LS140 and is the answer not in the manual?

Questions and answers

Brian Barnes
March 22, 2025

I wish to know what the warning lights are for

0
1 comments:
Mr. Anderson
March 22, 2025

The warning lights on the New Holland LS140 indicate various system faults. They include:

1. Hydraulic Oil Filter – Signals a required service with a flashing light and a five-second audible alarm.
2. Engine Air Cleaner – Triggers the same warning as the hydraulic oil filter.
3. Broken Alternator/Water Pump Belt – Alerts the operator with a flashing battery symbol light and an audible alarm.
4. Engine Oil Pressure – If a fault occurs for more than 30 seconds, the warning includes a flashing light, a continuous audible alarm, and automatic engine shutdown after 30 seconds.
5. Hydrostatic Transmission Charge Pressure – Triggers the same warning as engine oil pressure.

If these faults occur, the operator should turn the ignition key to "OFF" to prevent further damage.

This answer is automatically generated

0

Related Manuals for New Holland LS140

Summary of Contents for New Holland LS140

  • Page 1 Copyright © New Holland LS140 LS150 Workshop Manual Workshop Manual Print English LS140 LS150...

  • Page 2: Table Of Contents

    Copyright © New Holland SECTION 00 – GENERAL INFORMATION CONTENTS Section Description Page Introduction ..............

  • Page 3: Introduction

    Holland service parts from your New Holland dealer. the Models LS140 and LS150 skid steers. Use it in Be prepared to give your dealer the model and serial conjunction with the operator’s manual which is number of the engine and skid steer (the location of supplied with the skid steer.

  • Page 4: Company Policy

    We would like to point out that “NON-GENUINE” parts and accessories have not been examined and released by NEW HOLLAND. The installation and or use of such products could have negative effects upon the design characteristics of your machine and thereby affect its safety. NEW HOLLAND is not liable for any damage caused by the use of “NON-GENUINE”...

  • Page 5: Precautionary Statements

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION PRECAUTIONARY STATEMENTS PERSONAL SAFETY MACHINE SAFETY Throughout this manual and on machine decals, you Additional precautionary statement (“IMPORTANT”) will find precautionary statements (“CAUTION”, is followed by specific instructions. This statement is “WARNING”, and “DANGER”) followed by specific...

  • Page 6: Safety Precaution Information

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION SAFETY PRECAUTION INFORMATION to the eic and prevent damage to the eic CAUTION board or blowing the 5-amp fuses if the board Unsafe operating practices and improper use of is accidentally grounded.
  • Page 7 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 30. Before starting the engine, be sure that all 42. Never extend any part of the body outside of operating controls are in neutral and the the operator’s area. parking brake is engaged.

  • Page 8: General Safety Information

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION GENERAL SAFETY INFORMATION Check for leaks with a piece of cardboard. Protect hands and body from high-pressure fluids. HANDLE FLUIDS SAFELY When you work around fuel or other flammable If an accident occurs, see a doctor immediately. Any...
  • Page 9 Copyright © New Holland SECTION 00 - GENERAL INFORMATION WARNING If servicing requires the engine to be operated, raise the machine and properly support the unit with Starting an engine with a booster battery adequate jack stands or blocking with all four wheels requires extreme care as batteries produce off the ground.

  • Page 10: Machine Model And Serial Number Location

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION MACHINE MODEL AND SERIAL NUMBER LOCATION The skid steer model and serial number tag is located on the right front interior of the operator’s cab at 1. ENGINE MODEL AND SERIAL NUMBER...
  • Page 11 Copyright © New Holland SECTION 00 - GENERAL INFORMATION MINIMUM HARDWARE TIGHTENING TORQUES IN FOOT POUNDS (NEWTON-METERS) FOR NORMAL ASSEMBLY APPLICATIONS INCH HARDWARE AND LOCKNUTS SAE GRADE 2 SAE GRADE 5 SAE GRADE 8 LOCKNUTS NOMINAL UNPLATED PLATED UNPLATED PLATED...
  • Page 12 Copyright © New Holland SECTION 00 - GENERAL INFORMATION MINIMUM HARDWARE TIGHTENING TORQUES IN FOOT POUNDS (NEWTON-METERS) FOR NORMAL ASSEMBLY APPLICATIONS METRIC HARDWARE AND LOCKNUTS CLASS 5.8 CLASS 8.8 CLASS 10.9 LOCKNUT NOMINAL CL.8 SIZE UNPLATED PLATED UNPLATED PLATED UNPLATED PLATED W/CL8.8...

  • Page 13: Installation Of Adjustable Fittings In Straight Thread O Ring Bosses

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION INSTALLATION OF ADJUSTABLE FITTINGS IN STRAIGHT THREAD O RING BOSSES 1. Lubricate the O ring by coating it with a light oil or petroleum. Install the O ring in the groove adjacent to the metal backup washer which is assembled at the extreme end of the groove, 4.

  • Page 14: Pipe Thread Fitting Torque

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION PIPE THREAD FITTING TORQUE Before installing and tightening pipe fittings, clean the threads with a clean solvent or Loctite cleaner and apply sealant Loctite no. 567 for all fittings Thread Size Torque (Maximum) including stainless steel or no.

  • Page 15: Properly Support A Raised Machine

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION PROPERLY SUPPORT A RAISED MACHINE If servicing neutral adjustment, final drive adjustment or repairs requiring the machine to be raised, securely support the machine with adequate jack stands or blocks as shown.

  • Page 16: Raising Boom Without Battery Voltage (12V)

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION 3. Attach a fork lift or overhead hoist to the main boom, 1 and lifting device, 2. Attach chain or strap securely to prevent unhooking during boom lifting. CAUTION Attach suitable chains or straps capable of handling the weight of the boom, 454 kg (1000 lbs).
  • Page 17 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 3. Attach a fork lift or overhead hoist to the main boom, 1 and lifting device, 2. Attach chain or strap securely to prevent unhooking during boom lifting. CAUTION Attach suitable chains or straps capable of handling the weight of the boom, 454 kg (1000 lbs).

  • Page 18: Reattaching Cylinders After Repair With Boom Resting On Boom Lock Pins

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION 6. With an Operator sitting in the Operator’s seat with the seat belt buckled. 7. Slowly raise the boom above the boom lock pins, 8. Operator sitting in seat, engage the boom lock pins, 1.

  • Page 19: Major Unit Overhaul

    Figure 16 shows the skid steer properly supported and the cab tilted forward. WARNING Never attempt to tilt the skid steer cab without using the proper tool and instructions. See more detail later in this section of the manual and/or contact your New Holland dealer. 00-18...

  • Page 20: Cab And Boom Tilt Procedure

    Contact your New Holland dealer for major service or repairs of the skid steer. Using the proper cab tilting tool and following these steps, the cab and boom can be tilted forward.
  • Page 21 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 3. Jack up the skid steer and block it securely with all four wheels off the ground, as shown. Position the front blocks, 1, to the front of the final drive housings and the rear blocks, 2, to the rear of the flat area of the final drive housings.
  • Page 22 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 7. Remove fenders, 1, right and left sides. 8. Remove the front step shield, 2. 9. Remove the front engine shield supports, 3, right and left sides. 10. Raise the seat and lock in the up position, 1.
  • Page 23 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 12. Install the lower cab jack support, 1, by sliding the support over the attaching pin at 2, on the left front final drive. Rest the other end of the support on top of the front tie down loop, 3, and secure with a 5/8″...
  • Page 24 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 15. Loosen the front cab mounting bolts, 1, only enough to allow the bolt to rotate in the support. Remove the rear front cab bolts, 2. CAUTION Never remove the front cab bolts, 1, as these are the pivot bolts during the cab tilting procedure.
  • Page 25 Copyright © New Holland SECTION 00 - GENERAL INFORMATION To jack the cab and boom assembly back into position: 1. Pull the hydrostat control handles forward and hold in this position with rubber tie straps from the handle to the front cab post.
  • Page 26 Copyright © New Holland SECTION 00 - GENERAL INFORMATION 10. Torque the front bolts, 1, to 190 N·m (140 ft. lbs.). 11. Reinstall the parking brake linkage, 1, with cotter pins, 2. 19992572 12. Install fenders, 1, engine shields, 2, and front step shield, 3.

  • Page 27: Craning The Skid Steer

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION CRANING THE SKID STEER If the skid steer is inoperative and located in an area where it cannot be loaded onto a truck or trailer, the unit may be craned to load the unit.
  • Page 28 Copyright © New Holland SECTION 00 - GENERAL INFORMATION The front lift point is located in the center of the main frame, 1. The lifting chains or cables must be minimum of 3.66 m (12′). The lifting hook point must be minimum of 1.9 m (75″) above the cab, 1, to prevent the chains or...
  • Page 29 Copyright © New Holland SECTION 00 - GENERAL INFORMATION When craning (lifting or lowering) a skid steer, observe these “CAUTIONS”. CAUTION 6. Do not attach lifting devices to the skid steer boom or attachments on the skid steer. 1. No riders (including the operator) in or on the machine while lifting or lowering.

  • Page 30: Special Tools

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION SPECIAL TOOLS Tool Number Order From Description LS140 LS150 86590084 New Holland Cab Tilting Tool Engine NH 00011 Oil pressure adapter NH 00120 Compression test adapter NH 00117 Oil pump port block installer...

  • Page 31: Specifications

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION SPECIFICATIONS MODEL LS140 LS150 ENGINE MANUFACTURER ..... NEW HOLLAND ....
  • Page 32 Copyright © New Holland SECTION 00 - GENERAL INFORMATION MODEL LS140 LS150 ENGINE Oil type ......
  • Page 33 Copyright © New Holland SECTION 00 - GENERAL INFORMATION MODEL LS140 LS150 BOOM CYLINDERS Double-acting ..... . 5.7 cm (2.25″) dia. bore .

  • Page 34: Dimensions

    Copyright © New Holland SECTION 00 - GENERAL INFORMATION DIMENSIONS - LS140 and LS150 WITH 60, DIRT AND FOUNDRY BUCKET AND 10 x 16.5 TIRES - CM (IN.) 1 - OVERALL WIDTH w/BUCKET ..........
  • Page 35 Copyright © New Holland SECTION 00 - GENERAL INFORMATION DIMENSIONS - LS140 AND LS150 WITH 60, DIRT AND FOUNDRY BUCKET AND 10 x 16.5 TIRES - CM (IN.) 1 - MAXIMUM OPERATING HEIGHT .........
  • Page 36 Copyright © New Holland SECTION 10 – ENGINE Chapter 1 – LS140-N843, LS150-N843H CONTENTS Section Description Page 10 000 General Engine Information ...........
  • Page 37 Copyright © New Holland SECTION 10 - ENGINE Crankshaft and Bearing Holder Assembly ........

  • Page 38: General Engine Information

    Copyright © New Holland SECTION 10 - ENGINE Op.10 000 GENERAL ENGINE INFORMATION New Holland N843 engines are used in the LS140 skid steers. The LS150 skid steer is fitted with a New Holland N843H engine. GENERAL DESCRIPTION The N843 and N843H Series engines are three...
  • Page 39 Copyright © New Holland SECTION 10 - ENGINE Pistons and Connecting Rods Rocker Cover and Inlet Manifold Pistons are cast from high silicon aluminum alloy and The cover is made of cast aluminum with an air are heat-treated for low weight with high strength and intake, oil filler, and crankcase breather.

  • Page 40: Engine Model And Serial Number Location

    This publication is produced by New Holland North America, Inc. Every endeavor is made to ensure the information contained in this manual is correct at the...

  • Page 41: Safety Precautions

    Copyright © New Holland SECTION 10 - ENGINE SAFETY PRECAUTIONS CAUTION Do not use salt water in the fresh water cooling These safety precautions are most important: system or any other coolant which can cause Do not change the specification of the engine.

  • Page 42: General Engine Specifications

    ......... . Counterclockwise viewed from flywheel Engine Speed - LS140 (N483) High Idle (no load) .
  • Page 43 Copyright © New Holland SECTION 10 - ENGINE Recommended Engine Fluids Coolant ........

  • Page 44: Troubleshooting

    Copyright © New Holland SECTION 10 - ENGINE TROUBLESHOOTING PROBLEM CAUSE CORRECTION Engine will crank but does not start Faulty key switch Correct the connection and/or replace switch Blown 5-amp electronic ignition Replace fuse fuse (cab fuse panel) Fuel solenoid not operating...
  • Page 45 Copyright © New Holland SECTION 10 - ENGINE PROBLEM CAUSE CORRECTION Engine stops during operation EIC (Electronic Instrument Cluster) Check repair hydrostatic shows fault with hydrostatic charge charge pressure pressure EIC (Electronic Instrument Cluster) Check oil level and/or repair engine...
  • Page 46 Copyright © New Holland SECTION 10 - ENGINE PROBLEM CAUSE CORRECTION Oil pressure lamp not turning off Lack of engine oil Fill oil to the specified level Fault in the pressure switch Replace the switch Oil leakage from the lubricating...

  • Page 47: Specifications - Service Standards

    Copyright © New Holland SECTION 10 - ENGINE SPECIFICATIONS SERVICE STANDARDS Standard To Be Allowable Inspection Item Dimension Standard Value Repaired Limit Remarks CYLINDER HEAD Less than More than 29.4 bar Cylinder compression pressure 24.5 bar (426.6 PSI) (355.5 PSI) 98 - 103 N·m...
  • Page 48 Copyright © New Holland SECTION 10 - ENGINE Standard To Be Allowable Inspection Item Dimension Standard Value Repaired Limit Remarks PISTON RING - Cont. 0.2 - 0.35 mm 1st ring (0.008″ - 0.014″) 0.2 - 0.4 mm 1.0 mm 2nd ring Piston ring end gap (0.008″...
  • Page 49 Copyright © New Holland SECTION 10 - ENGINE Standard To Be Allowable Inspection Item Dimension Standard Value Repaired Limit Remarks CAMSHAFT For intake/ 34.065 - 34.12 mm 33.7 mm exhaust (1.3411″ - 1.3433″) (1.3268″) For injection 41.94 - 42.06 mm 41.8 mm...
  • Page 50 Copyright © New Holland SECTION 10 - ENGINE Standard To Be Allowable Inspection Item Dimension Standard Value Repaired Limit Remarks OIL PUMP Oil pressure switch actuating 0.3 bar 0.2 - 0.4 bar pressure (4.3 PSI) (2.8 - 5.7 PSI) 3.1 bar 2.4 - 3.5 bar...
  • Page 51 Copyright © New Holland SECTION 10 - ENGINE Standard To Be Allowable Inspection Item Dimension Standard Value Repaired Limit Remarks ALTERNATOR Type MITSUBISHI (12V-40A) 0.07 mm Rotor shaft bending (0.0028″) Slip rings 22.7 mm 22.1 mm Diameter (0.894″) (0.871″) 0.05 mm 0.02 mm...

  • Page 52: Torque Specifications

    Copyright © New Holland SECTION 10 - ENGINE TORQUE SPECIFICATIONS COMPONENT SETTING/REMARKS Bearing holder bolts - hex hole type 24 - 30 N·m (18 - 22 ft. lbs.) - hex bolt type 49 - 54 N·m (36 - 40 ft. lbs.) Rear plate bolts 14 - 18 N·m (10 - 13 ft.

  • Page 53: Engine Components Electrical Diagram

    Copyright © New Holland SECTION 10 - ENGINE ENGINE COMPONENTS ELECTRICAL DIAGRAM 19992596 10-18...

  • Page 54: Engine Removal

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 001 10 ENGINE REMOVAL The engine can be removed from the skid steer by two methods: Method 1 Removing the rear door, radiator, oil cooler, and support as an assembly.
  • Page 55 Copyright © New Holland SECTION 10 - ENGINE 8. Unhook the hydraulic oil return line, 1, from the charge check valve and cap. 9. Remove the eight 1/2″ cap screws from the support at 1, both sides, and remove the radiator and oil cooler assembly.
  • Page 56 Copyright © New Holland SECTION 10 - ENGINE 10. Raise the seat to the raised latched position, 1, to access the hydrostatic pumps and engine bellhousing. Remove the neutralizer plate return spring and hardware, 2, from the bellhousing and remove plate.
  • Page 57 Copyright © New Holland SECTION 10 - ENGINE METHOD 2 (Tilting Cab and Boom Forward) Follow the cab tilting procedure in Section 00 of this manual for proper instructions. 1. Remove the muffler from the exhaust manifold, 2. Remove the battery.
  • Page 58 Copyright © New Holland SECTION 10 - ENGINE 8. Unhook the hydraulic oil return line, 1, from the charge check valve and cap. 9. Remove the neutralizer plate return spring and hardware, 1, from the bellhousing and remove plate, 2.
  • Page 59 Copyright © New Holland SECTION 10 - ENGINE 12. Attach lifting chains to the engine lift eyes at 1, and hook to the lifting device to support the engine. 13. Remove the fuse panel support hardware, 2, and move the panel for clearance.

  • Page 60: Engine Disassembly Sequence

    Copyright © New Holland SECTION 10 - ENGINE ENGINE DISASSEMBLY SEQUENCE Op. 55 301 10 ALTERNATOR Disconnect the alternator wire harness and wires, 1. Remove the alternator pivot and adjusting bracket, hardware, 2. Op. 10 414 20 REMOVE COOLING FAN AND PULLEY Remove the fan retaining hardware and spacers.
  • Page 61 Copyright © New Holland SECTION 10 - ENGINE Op. 10 402 10 WATER PUMP ASSEMBLY Loosen the securing bolts and remove the water pump assembly, 1, and back plate, 2. Op. 10 254 12 INLET MANIFOLD Op. 10 254 14...
  • Page 62 Copyright © New Holland SECTION 10 - ENGINE Op. 10 250 16 EXTERNAL OIL PIPE 1. Loosen and remove the two banjo bolts at the cylinder block main oil gallery and cylinder head assembly, 1. 2. Remove the line clamp, 2, from the fuel injection pump.
  • Page 63 Copyright © New Holland SECTION 10 - ENGINE TAPPETS Pull the tappets from the machined bore in the cylinder block. Op. 10 223 10 STOP SOLENOID Unscrew the stop solenoid. Reach into the solenoid mounting hole and press the fuel pump rack into the pump.
  • Page 64 Copyright © New Holland SECTION 10 - ENGINE Op. 10 414 30 CRANK PULLEY Loosen the pulley nut, 1, and, using a puller, remove the pulley, 2, from the crankshaft, 3. Op. 10 304 10 OIL FILTER Remove the spin-on type oil filter and discard.
  • Page 65 Copyright © New Holland SECTION 10 - ENGINE Op. 10 102 46 FRONT END PLATE ASSEMBLY Remove the retaining bolts and lift the front plate off its locating dowels. Remove the gasket and discard. Op. 10 304 06 DIPSTICK ASSEMBLY Loosen the retaining bolts and remove the assembly.
  • Page 66 Copyright © New Holland SECTION 10 - ENGINE Op. 10 103 70 FLYWHEEL Loosen the bolts and remove the flywheel. Op. 10 102 BACKPLATE AND REAR OIL SEAL 1. Loosen the two starter retaining nuts and remove the starter. 2. Loosen the flywheel housing retaining bolts and remove the housing.
  • Page 67 Copyright © New Holland SECTION 10 - ENGINE Op. 10 304 38 3. Remove the relief valve assembly. 10-32...

  • Page 68: Engine Component Maintenance

    Copyright © New Holland SECTION 10 - ENGINE ENGINE COMPONENT MAINTENANCE Op. 10 106 20 ROCKER ASSEMBLY Disassembly 1. Loosen the hex head plug at the rocker arm shaft end. 2. Remove the screw located in the No. 1 cylinder rocker arm bracket.
  • Page 69 Copyright © New Holland SECTION 10 - ENGINE 2. Rocker Arm-to-Shaft Clearance Measure the inside diameter of the rocker arm. Calculate the clearance at, 1, between the rocker arm, 2, and the rocker arm shaft, 3. If the clearance is excessive, replace.
  • Page 70 Copyright © New Holland SECTION 10 - ENGINE Inspection and Correction Cylinder Head With a straightedge and a thickness gauge, check for warping of the cylinder head lower face. Check six positions (1 to 6 lines, as shown) for warping. If found to be warped excessively, correct with a surface grinder.

  • Page 71: Valve Seat

    Copyright © New Holland SECTION 10 - ENGINE Thickness of Valve Head If valve head thickness at 1 is less than the allowable limit, replace the valve. All Engines Standard Thickness Allowable Limit 0.925 - 1.075 mm 0.5 mm (0.036″ - 0.042″) (0.020″)
  • Page 72 Copyright © New Holland SECTION 10 - ENGINE Valve Seat Recess If the recess depth, 1, is more than the allowable limit, replace the valve seat. Standard Recess Allowable Limit 0.65 - 0.95 mm 1.6 mm Max. (0.026″ - 0.037″) (0.063″)
  • Page 73 Copyright © New Holland SECTION 10 - ENGINE Valve Spring Visually inspect the valve spring for damage. Position the valve spring on a flat surface and check the squareness of it by using a square at 1, as shown. If it exceeds the allowable limit, replace the spring.

  • Page 74: Cylinder Block

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 101 56 CYLINDER BLOCK Inspection and Correction Cylinder Block Top Face Inspect the cylinder block top face for cracks, damage, and warping in the same way as for the cylinder head.

  • Page 75: Piston And Piston Rings

    Copyright © New Holland SECTION 10 - ENGINE Bore Specifications Standard Standard Bore Allowable Limit 84 - 84.019 mm 84.2 mm (3.307″ - 3.308″) (3.315″) First Re-Bore 0.5 mm (0.020″) New Standard Bore Allowable Limit 84.5 - 84.519 mm 84.7 mm (3.327″...
  • Page 76 Copyright © New Holland SECTION 10 - ENGINE Piston Specifications When the cylinder is oversized, be sure that an oversized piston is used. Piston to Bore Clearance Standard Allowable Limit 0.038 - 0.072 mm 0.25 mm Max. (0.0015″ - 0.0028″) (0.010″)
  • Page 77 Copyright © New Holland SECTION 10 - ENGINE Piston Ring Groove Using a ring groove cleaner, remove the carbon deposits from the ring grooves. Be careful to avoid cutting any metal from either the side or bottom of the ring grooves.
  • Page 78 Copyright © New Holland SECTION 10 - ENGINE Piston Ring Gap Check the rings in the bore to determine the end gap clearance. Position the rings, one at a time, in the cylinder to the lowest point of ring travel. Use an inverted piston to place the ring squarely in the bore.

  • Page 79: Connecting Rod

    Copyright © New Holland SECTION 10 - ENGINE CONNECTING ROD Inspection Distortion or damage Check the connecting rod for twisting and bending between the large and small ends of the connecting rod with a connecting rod aligner. If the result exceeds the allowable limit, replace.
  • Page 80 Copyright © New Holland SECTION 10 - ENGINE Connecting Rod Side Clearance Check Assemble the connecting rod to the crankshaft and measure the clearance, 1, between the connecting rod and crankshaft with a feeler gauge. If the play is more than the allowable limit, replace the connecting rod.
  • Page 81 Copyright © New Holland SECTION 10 - ENGINE Assemble the connecting rod and connecting rod cap and tighten to 49 - 54 N·m (36 - 40 ft. lbs.). NOTE: Do not rotate the connecting rod. Remove the connecting rod cap. Measure the oil clearance (plastigage) with the scale printed on the gauge envelope.
  • Page 82 Copyright © New Holland SECTION 10 - ENGINE Reassembly 1. The piston and connecting rods are to be assembled with the matching marks, 1, on the same side as the trade name “SHIBAURA” embossed on the inside of the piston skirt, 2.

  • Page 83: Bearing Holder

    Copyright © New Holland SECTION 10 - ENGINE 5. Using a suitable ring compressor, install the piston and rod assemblies in their respective bores. Position the assembly in the block with the connecting rod number matching marks, 1, facing the injection pump side.
  • Page 84 Copyright © New Holland SECTION 10 - ENGINE Bearing Size Standard Crankshaft Journal Diameter 67.957 - 67.720 mm (2.6755″ - 2.6760″) 0.25 mm (0.010″) Crankshaft Journal Diameter 67.707 - 67.770 mm (2.6656″ - 2.6661″) 0.50 mm (0.020″) Crankshaft Journal Diameter 67.457 - 67.470 mm...

  • Page 85: Front Crankshaft Bearing (Bushing)

    Copyright © New Holland SECTION 10 - ENGINE FRONT CRANKSHAFT BEARING (BUSHING) Inspection Check the bearing (bushing) for peeling, melting, seizure, or poor contact. If found to be defective, replace. Using a cylinder gauge and micrometer, measure the oil clearance between the bearing (bushing) and the crankshaft journal.
  • Page 86 Copyright © New Holland SECTION 10 - ENGINE Crankshaft Bushing Replacement Bushing Removal Remove the bushing from the cylinder block using a bushing driver to prevent damage. Bushing Installation 1. Prior to installing the bushing, inspect the housing bore for burrs, scratches, etc.

  • Page 87: Crankshaft

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 103 30 CRANKSHAFT Inspection Crankshaft Deflection Support the crankshaft with V-blocks. Position a dial indicator on the crankshaft center journal and turn the crankshaft slowly one full turn. If the indicator...
  • Page 88 Copyright © New Holland SECTION 10 - ENGINE Connecting Rod Journal Diameter Standard Standard Diameter Allowable Limit 51.964 - 51.975 mm 51.90 mm (2.0458″ - 2.0463″) (2.0433″) 0.25 mm (0.01″) Standard Allowable Limit 51.714 - 51.725 mm 51.65 mm (2.0360″ - 2.0364″) (2.0335″)

  • Page 89: Flywheel And Ring Gear

    Copyright © New Holland SECTION 10 - ENGINE NOTE: When grinding the crankshaft, work with the following specifications: Radius at journal 3 mm ± 0.2 mm (0.118″ ± 0.0078″) Finish precision 63 m (1 .6 z) Radius around oil hole: 2 mm (0.0787″) maximum...

  • Page 90: Camshaft Assembly

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 106 40 CAMSHAFT ASSEMBLY Inspection Check the journals and cams for wear and damage. Replace if the allowable limit is exceeded. Correct uneven wear or small scratches on the cam surface with an oil stone.

  • Page 91: Timing Gear

    Copyright © New Holland SECTION 10 - ENGINE TIMING GEAR Inspection Check the timing gears for wear and damage on the contact area. Replace if any defect is found. Measure the backlash of gears with a feeler gauge or dial indicator. If the allowable limit is exceeded, replace all timing gears.

  • Page 92: Port Block

    Copyright © New Holland SECTION 10 - ENGINE Inspection Check the oil pump cover, inner and outer rotors for wear. Check the clearance between the rotors. Replace both rotors if scored, worn or if clearance exceeds specifications. PORT BLOCK The oil pump is mounted on a port block and shaft assembly.

  • Page 93: Oil Filter

    Copyright © New Holland SECTION 10 - ENGINE 2. Install two guide pins, 1, into the face of the engine block. 3. Insert the port block assembly into installer FNH00117 and place on the guide pins. Drive the port block into the engine block until the installer bottoms against the face of the engine block.

  • Page 94: Water Pump Assembly And Thermostat Housing

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 402 28 WATER PUMP ASSEMBLY AND THERMOSTAT HOUSING Water Pump 1. Remove the backplate, 3, and gaskets, 2, from the pump assembly, 1. 2. Check cracks, wear, leaks, bearing roughness, or damage. If defective, replace the pump assembly.

  • Page 95: Governor

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 230 24 GOVERNOR Construction/Functions A mechanical governor housed in the engine timing gear case is used. A flyweight assembly is mounted on the forward end of the camshaft. Movement of the flyweight is transmitted to the fuel injection pump by means of a sliding collar, control lever and link, 1.

  • Page 96: Governor Operation

    Copyright © New Holland SECTION 10 - ENGINE GOVERNOR OPERATION As the engine speed increases, the throttle arm, 1, contacts the fuel screw adjuster at contact point A, and the high-speed idle stop screw at B. During the engine speed increase, tension is placed on the governor spring, 2.
  • Page 97 Copyright © New Holland SECTION 10 - ENGINE As the engine speed decreases, the governor weights, 1, pivot inward allowing the slider cone, 2, to move rearward. 19993597 As the slider cone, 2, Figure 97, moves rearward, the governor linkage arm, 1, allows the fuel injection pump rack to move rearward to the full fuel position and the engine speed increases.

  • Page 98: Engine Reassembly Sequence

    Copyright © New Holland SECTION 10 - ENGINE ENGINE REASSEMBLY SEQUENCE PRECAUTIONS Thoroughly wash parts before reassembly. Ensure oil galleys are clean and unobstructed. Lubricate all rotating and sliding components before assembly. Clean all gasket surfaces, using care not to scratch mating surfaces.

  • Page 99: Crankshaft And Bearing Holder Assembly

    Copyright © New Holland SECTION 10 - ENGINE CRANKSHAFT AND BEARING HOLDER ASSEMBLY 1. With the bearing holders installed on the crankshaft (see “Crankshaft Bearing Holders”) insert the assembly into the block from the flywheel end. Slide the nose of the crankshaft into the front bushing in the front end of the cylinder block.

  • Page 100: Rear Oil Seal

    Copyright © New Holland SECTION 10 - ENGINE REAR OIL SEAL This is a slip-fit on the crankshaft, retained by the flywheel housing. BACKPLATE/FLYWHEEL HOUSING Coat the area around the Me threaded holes with liquid gasket and attach the flywheel housing with bolts.

  • Page 101: Piston And Connecting Rod

    Copyright © New Holland SECTION 10 - ENGINE PISTON AND CONNECTING ROD Coat the bearing face, piston, and piston ring with clean engine oil. Slide the piston ring to permit a sufficient amount of oil to be applied in the groove. Set the piston ring gaps 90°...

  • Page 102: Front Plate

    Copyright © New Holland SECTION 10 - ENGINE FRONT PLATE Camshaft Assembly, Tachometer Drive and Plate 1. Install the front plate to the block. 2. Install the camshaft assembly partially into the block. Use care to avoid damaging the bearings.

  • Page 103: Timing Gear Case Installation

    Copyright © New Holland SECTION 10 - ENGINE Check rotor tip clearance to specification. Clearance Specification Allowable Limit 0.01 - 0.15 mm 0.25 mm (0.0004″ - 0.006″) (0.010″) TIMING GEAR CASE INSTALLATION NOTE: NEVER TURN THE CRANKSHAFT until the timing gear cover is installed.

  • Page 104: Crankshaft Pulley

    Copyright © New Holland SECTION 10 - ENGINE CRANKSHAFT PULLEY Align the keyway and key on the crankshaft pulley and crankshaft and assemble them. Crankshaft pulley tightening torque: 275 - 333 N⋅m (203 - 246 ft. lbs.) INJECTION PUMP INSTALLATION Installation generally follows the removal procedure in reverse.

  • Page 105: Spill Timing Procedure

    Copyright © New Holland SECTION 10 - ENGINE Installation Using a New Pump or Drive Component Procedure when infection pump, engine block, camshaft gear, camshaft, idler gear or crankshaft have been replaced. NOTE: The engine stop solenoid must be removed before installing the pump.
  • Page 106 Copyright © New Holland SECTION 10 - ENGINE Procedure With Cylinder Head Installed 3. Remove the valve rocker cover. 4. Rotate the crankshaft, 1, to align the pulley timing mark, 2, with the timing pointer. The crankshaft must be on the compression stroke, both intake and exhaust valves closed.
  • Page 107 Copyright © New Holland SECTION 10 - ENGINE 6. Remove the spring from one of the valves in No.1 cylinder. 7. Gently tap the end of the valve stem to remove loose carbon from the valve head. 8. Install a dial indicator, 1, with the pointer resting on the end of the valve stem, 2.
  • Page 108 Copyright © New Holland SECTION 10 - ENGINE 15. N843 engine: 16. Recheck pump timing after adjusting shim thickness. A dial indicator reading of 3.895 - 4.655 mm (0.1533″ - 0.1833″) indicates injection timing 17. Reassemble the delivery valve, spring and between 21°...
  • Page 109 Copyright © New Holland SECTION 10 - ENGINE Cylinder Head During assembly, the ultimate engine compression ratio is established by the thickness of the head gasket used. For service replacement, head gaskets of different thickness are available. The correct head...
  • Page 110 Copyright © New Holland SECTION 10 - ENGINE Coat head bolt threads with a light coat of molybdenum disulfide grease. Tighten the head bolts in three stages in the order shown. Final torque is 98 - 103 N⋅m (72 - 76 ft. lbs.).
  • Page 111 Copyright © New Holland SECTION 10 - ENGINE Valve Clearance Adjustment Loosen the nut and adjust the clearance of both the intake and exhaust valves to 0.2 mm (0.0078″) with the adjusting screw. NOTE: Adjust when the engine is cold. Set the No.
  • Page 112 Copyright © New Holland SECTION 10 - ENGINE Install the upper and lower thermostat housing assembly. Connect the hoses. Glow Plug and Connector Glow plug tightening torque: 15 - 20 N⋅m (11 - 14.5 ft. lbs.) Oil Pressure Switch Oil pressure switch tightening torque: 15 - 20 N⋅m (11 -14.5 ft.
  • Page 113 Copyright © New Holland SECTION 10 - ENGINE V-Belt, Fan Pulley and Cooling Fan After mounting the fan pulley, cooling fan, spacers, and cover plates, 1, install the V-belt. Depress the belt at the center between the crankshaft pulley and the alternator pulley, with a force of approximately 5 kg (2.27 Ibs).

  • Page 114: Reinstallation Of Engine Into Skid Steer Frame

    Copyright © New Holland SECTION 10 - ENGINE Op. 29 100 50 REINSTALLATION OF ENGINE INTO SKID STEER FRAME NOTE: Inspect the splines, 1, on the hydrostatic pump flex plate and the splines on the input shaft. If flex plate is damaged, replace with a new flex plate.
  • Page 115 Copyright © New Holland SECTION 10 - ENGINE 5. Check the condition and reinstall or replace the engine isolator mounts. Examine the condition of the rubber mount, 1, and replace the mount if it shows signs of deterioration. Isolator mount...

  • Page 116: How To Operate The Engine After Overhaul

    Copyright © New Holland SECTION 10 - ENGINE HOW TO OPERATE THE ENGINE AFTER OVERHAUL 1. Check the quantity of the coolant, engine oil, and 7. Adjust the low speed to 1500 RPM with the fuel. engine running and warm up for 30 minutes. At the same time: 2.

  • Page 117: Cooling System Operation

    Copyright © New Holland SECTION 10 - ENGINE COOLING SYSTEM SPECIFICATIONS Capacity - 10.3 L (10.8 qts.) Mixture - 50/50 antifreeze/water Radiator cap - 0.5 bar (7 PSI) THERMOSTAT Opening 80° C - 84° C (176° F - 183° F) Fully Open 94°...

  • Page 118: Water Pump Assembly And Thermostat Housing

    Copyright © New Holland SECTION 10 - ENGINE DANGER Allow the engine and cooling system to cool before removing the radiator cap. Always allow the engine and cooling system to cool off before draining the cooling system. WATER PUMP ASSEMBLY AND...
  • Page 119 Copyright © New Holland SECTION 10 - ENGINE Op. 10 402 30 Thermostat 1. Remove the thermostat housing, 1, from the housing base, 2. Remove the thermostat, 3. 2. Replace the thermostat if the valve is open at ambient temperature.

  • Page 120: Radiator

    Copyright © New Holland SECTION 10 - ENGINE RADIATOR Op. 10 406 02 Radiator Cap A pressure-type radiator cap rated at 0.5 bar (7 PSI) is employed to obtain higher cooling efficiency. When the coolant pressure builds up to the range of 0.5 bar (7 PSI), excessive pressure is relieved from the overflow pipe (shown by white arrow).

  • Page 121: Fuel Specifications

    Otherwise, the fuel may cloud and block the fuel system. When temperatures are extremely cold, use properly mixed winter fuel. Use New Holland diesel fuel conditioner part #251202 to mix with the diesel fuel. Follow the directions for use as indicated on the container.
  • Page 122 Copyright © New Holland SECTION 10 - ENGINE FUEL SYSTEM COMPONENTS The fuel system contains a fuel tank located in the left side of the engine compartment at 1. Fuel tank pickup tube, 2; fuel tank sending unit, 3; in-line fuel filter, 4;...

  • Page 123: Fuel Guage

    Copyright © New Holland SECTION 10 - ENGINE FUEL GAUGE flashing light for about 5 seconds. When the fuel level In the center of the EIC panel is the fuel gauge, 1, reaches three bars, 2, the segments will flash.

  • Page 124: Cold Start Aid

    Copyright © New Holland SECTION 10 - ENGINE COLD START AID The EIC controls a timed preheat cold start aid to assist in cold weather starting. STARTING A COLD ENGINE Move the engine speed control ahead to 1/3 position, maximum 1500 RPM.

  • Page 125: Priming The Fuel System

    Copyright © New Holland SECTION 10 - ENGINE PRIMING THE FUEL SYSTEM The skid steer is equipped with an electric fuel pump, 1. If the engine has been run out of fuel, add a minimum of 5 gallons (18.9 L) fuel to the tank.

  • Page 126: Fuel System Testing

    Copyright © New Holland SECTION 10 - ENGINE FUEL SYSTEM TESTING ELECTRIC FUEL PUMP PRETEST PROBABLE CAUSE STEP TEST RESULT INSTRUCTIONS AND CORRECTION Skid steer on level with Fuel in tank Add fuel and bleed system parking brake engaged, Go to next step key “OFF”...
  • Page 127 Copyright © New Holland SECTION 10 - ENGINE FUEL TANK SENDING UNIT (Fuel level) PRETEST PROBABLE CAUSE STEP TEST RESULT INSTRUCTIONS AND CORRECTION Skid steer on level with EIC gauge and Check wires from sender parking brake engaged, sender (bars light up) to EIC board, if OK, key “ON”...
  • Page 128 Copyright © New Holland SECTION 10 - ENGINE FUEL FLOW Fuel tank Filter (water trap) Tank pick-up Injection pump In-line fuel filter Fuel shut-off solenoid Electric fuel pump FUEL SYSTEM ELECTRICAL DIAGRAM Key switch Electric fuel pump EIC board Injector pump...

  • Page 129: Fuel System Components

    Copyright © New Holland SECTION 10 - ENGINE FUEL SYSTEM COMPONENTS FUEL TANK Op. 10 216 10 Remove and Replace 1. Raise the boom, extend the boom lock pins, 1, and lower the boom down on the lock pins. 2. Stop the engine, turn the ignition key to the “ON”...
  • Page 130 Copyright © New Holland SECTION 10 - ENGINE 12. Remove the front, 2, and rear, 3, tank support hardware. 13. Remove the fuel tank from the bottom of the engine compartment. Op. 55 410 80 FUEL LEVEL SENDER 1. Support the boom on the boom lock pins.
  • Page 131 Copyright © New Holland SECTION 10 - ENGINE Op. 10 210 21 ELECTRIC FUEL PUMP 1. Support the boom on the boom lock pins. 2. Open the rear door and remove the left engine side shield. 3. Remove the hose clamps, 1, from the pump and hoses.
  • Page 132 Copyright © New Holland SECTION 10 - ENGINE Reassembly Replace gasket, packing, etc. Use liquid gasket to prevent oil leakage where necessary. Precautions Before Assembling Never over-tighten bolts and nuts used on aluminum Wash parts before assembling (especially oil gallery, alloy.
  • Page 133 Copyright © New Holland SECTION 10 - ENGINE GOVERNOR OPERATION As the engine speed increases, the throttle arm, 1, contacts the fuel screw adjuster at contact point A, and the high-speed idle stop screw at B. During the engine speed increase, tension is placed on the governor spring, 2.
  • Page 134 Copyright © New Holland SECTION 10 - ENGINE As the engine speed decreases, the governor weights, 1, pivot inward allowing the slider cone, 2, to move rearward. 19993597 As the slider cone, 2, Figure 164, moves rearward, the governor linkage arm, 1, allows the fuel injection pump rack to move rearward to the full fuel position and the engine speed increases.
  • Page 135 Copyright © New Holland SECTION 10 - ENGINE Op. 10 218 34 NOZZLE AND HOLDER Specification Nozzle type Throttle type Needle valve diameter 4 mm (0.16″) Pintle diameter 1 mm (0.04″) Valve setting pressure 153 - 163 bar (2207 - 2350 PSI) Spraying angle 4°...
  • Page 136 Copyright © New Holland SECTION 10 - ENGINE Reassembly/Adjustment FUEL INJECTION PUMP If trouble has been traced to this pump, disassembly, 1. Before fitting a new nozzle assembly, soak it in inspection, assembly, and testing/setting must only heated light oil at 50° - 60° C (120° -140° F) to be carried out by fuel equipment specialists.

  • Page 137: Fuel Injection Timing

    Copyright © New Holland SECTION 10 - ENGINE Op. 10 236 08 FUEL INJECTION TIMING Spill Timing Procedure (with cylinder head installed) 1. Remove the No. 1 delivery valve holder, 3, (nearest the radiator), the spring, 2, and delivery valve, 1.
  • Page 138 Copyright © New Holland SECTION 10 - ENGINE 6. Remove the spring from one of the valves in No.1 cylinder. 7. Gently tap the end of the valve stem to remove loose carbon from the valve head. 8. Install a dial indicator, 1, with the pointer resting on the end of the valve stem, 2.
  • Page 139 Copyright © New Holland SECTION 10 - ENGINE 15. N843 engine: A dial indicator reading of 3.895 - 4.655 mm (0.1533″- 0.1833″) indicates injection timing between 21° - 23° and no further adjustment is necessary. N843H engine: A dial indicator reading of 3.539 - 4.267 mm (0.1393″...

  • Page 140: Miscellaneous Engine Electrical

    Copyright © New Holland SECTION 10 - ENGINE MISCELLANEOUS ENGINE ELECTRICAL Op. 55 201 76 GLOW PLUG Sheathed type glow plugs are used to improve cold engine starting. The glow plugs draw 6.9 amps at 10.5 volts. Heat wire Sheath...
  • Page 141 Copyright © New Holland SECTION 10 - ENGINE Op. 55 414 12 OIL PRESSURE SWITCH The oil pressure switch is a normally closed switch completing a circuit to ground signaling the EIC to generate a low engine oil pressure warning signal.

  • Page 142: Special Tools

    Copyright © New Holland SECTION 10 - ENGINE SPECIAL TOOLS • ENGINE NH 00122 - Compression Test Adapter • NH 00011 - Fitting - 1/8 BSPT x 7/16 - 20 UNF Right angle quick disconnect coupling. Use with FNH 00120 and FNH 02020.

  • Page 143: Labor Guide

    Copyright © New Holland SECTION 10 - ENGINE LABOR GUIDE The following labor amounts are listed as a guide only. Machine and working conditions will vary the actual time required to perform a repair operation. Op. 10 001 10 Set valve clearances. Run engine and check for leaks.
  • Page 144 Copyright © New Holland SECTION 10 - ENGINE PISTON ASSEMBLY Reseat all valves. Grind all valve seats, reface all Connecting Rod - Replace one - valves. Engine in machine ....
  • Page 145 Copyright © New Holland SECTION 10 - ENGINE FUEL SYSTEM Fuel Level Sender - R&R ... . . 0.5 hours Injection Pump - Fuel Pickup Tube - R&R ....
  • Page 146 Copyright © New Holland SECTION 29 – HYDROSTATIC TRANSMISSION Chapter 1 – Neutralizer, Pumps, Motors CONTENTS Section Description Page 29 100 General Information ............
  • Page 147 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 29 100 Steering System ............

  • Page 148: General Information

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op. 29 100 GENERAL INFORMATION The hydrostatic system provides a means to transfer power from the engine to the final drives and wheels. It provides for an infinite number of operator speed selections for both the forward and reverse directions and also furnishes a means to steer the loader.
  • Page 149 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION The hydrostatic system consists of the following 8. Charge check valve - In return line between oil fil- components: ter and reservoir. 1. Hydraulic reservoir - Right front of engine 9. Hydrostatic transmission charge line - From the...

  • Page 150: Specifications

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION SPECIFICATIONS HYDROSTATIC PUMPS Type ............

  • Page 151: Troubleshooting

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op. 29 100 01 TROUBLESHOOTING When performing tests on the hydrostatic system, WARNING use the proper test procedures and test equipment. Gauges, gauge fittings, and hoses must have op- Before testing, lower the attachment to the ground or erating pressure ratings of at least 25% higher remove attachment from the loader.
  • Page 152 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION PROBLEM POSSIBLE CAUSE CORRECTION Machine will not move either direc- Parking brake engaged Release parking brake tion Engine to hydrostatic drive coupler Check and repair or replace Low hydraulic oil Check oil level...

  • Page 153: Hydrostatic Drive System Testing

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC DRIVE SYSTEM TESTING Hand controls - forward and reverse Pretest instructions: Operator in seat Seat belt buckled Service/Run switch in “RUN” position Key switch in the “OFF” position STEP TEST...
  • Page 154 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Before performing any hydraulic test, operate the skid-steer loader to get the hydraulic oil to operating temperature (about 38° C [100° F] above ambient temperature). For access to hydrostatic testing, remove any attach- ment from the loader attaching face plate and sup- port the boom on the lockpins.
  • Page 155 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 5. Raise the operator’s seat and latch in the raised position, 1. Remove step shield at 2. CAUTION Never work under a raised seat unless it is se- curely latched in the raised position.

  • Page 156: Hydrostatic System Oil Flow

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION drostatic motor, 6, when the right forward/reverse HYDROSTATIC SYSTEM OIL FLOW control lever is stroked in either direction. The hydrostatic system is protected by four high- Hydrostatic Pumps and Motors High-Pressure...
  • Page 157 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Hydrostatic Pump and Motor Charge Pressure A charge check valve in the return line after the filter Oil Flow at 1, builds back pressure in the return circuit and forces oil through the charge line, 2, into the hydro- During the operation of the hydrostatic pumps and static pump back plates at 3.
  • Page 158 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Hydrostatic Pump and Motor Case Drain Flow drain from the pumps and motor housings (cases) through drain lines, 1. During operation of the hydrostatic pumps and mo- tors, oil from the high-pressure circuit used for lu-...

  • Page 159: Hydrostatic Charge System Pressure Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC CHARGE SYSTEM PRESSURE TEST Hydrostatic charge pressure oil is the oil returned from the boom, bucket, and auxiliary hydraulic cir- cuits through the return side of the main control valve. This oil is required to replenish the oil used for lubrication and cooling of the hydrostatic pumps and motors.
  • Page 160 IMPORTANT: Check the hydraulic oil level and add if required to insure sufficient oil for the test. 7. Start the engine and run it at full throttle (LS140 at 3070 - 3150 RPM; LS150 at 3410 - 3480 RPM) and take a pressure reading, 7.5 - 8.2 bar (110 - 120 PSI).

  • Page 161: Hydrostatic Pump Case Drain Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC PUMP CASE DRAIN TEST The hydrostatic pump drain oil can be checked by a pressure test and/or oil flow drain test. Pump Case Pressure Test Procedure 1. Raise the boom and rest on the boom locks.
  • Page 162 IMPORTANT: Check the hydraulic oil level and add if required to insure sufficient oil for the test. 8. Start the engine and run it at full throttle (LS140 at 3070 - 3150 RPM; and LS150 at 3410 - 3480 RPM) and take a reading, 0 - 41.2 kPa (0 - 6 PSI) allowable range.
  • Page 163 19992561 8. Start the engine and run it at full throttle (LS140 at 3070 - 3150 RPM; and LS150 at 3410 - 3480 RPM). Take a flow reading, maximum 1.5 GPM each pump, 3 GPM total from both pumps.

  • Page 164: Hydrostatic Pump High Pressure Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC PUMP HIGH-PRESSURE TEST The hydrostatic drive system has a high-pressure re- lief valve for forward and reverse, two relief valves per pump or side. The relief valves, 1, for both pumps and for forward and reverse are the same and the same setting, 306 bar (4500 PSI).
  • Page 165 Rear pump controls left motor. 3 - Forward (bottom) 4 - Reverse (top) 8. Start the engine and run it at full throttle (LS140 at 3070 - 3150 RPM; and LS150 at 3410 - 3480 RPM). 9. Stroke the hydrostatic control lever on the side...

  • Page 166: Hydrostatic Pump Efficiency Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC PUMP EFFICIENCY TEST CAUTION This test can be used to check the operating efficien- Failure to securely support the skid-steer loader cy of the pump. could result in movement of the loader during...
  • Page 167 IMPORTANT: Check the hydraulic oil level and add if required to insure sufficient oil for the test. 9. Using the EIC or a photo tach, set the engine speed to 2900 RPM (LS140) or 3200 RPM (LS150). 10. With the flowmeter regulator valve completely...

  • Page 168: Hydrostatic Motor Case Drain Test

    9. Start the engine and set engine speed at 2900 RPM (LS140) or 3200 RPM (LS150) using the EIC or a photo tach. 10. Stroke the control lever for the side being tested, forward and reverse and take a flow reading, MAXIMUM 1.5 GPM.

  • Page 169: Hydrostatic Motor Efficiency Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC MOTOR EFFICIENCY TEST CAUTION This test can be used to check the operating efficien- Failure to securely support the skid-steer loader cy of the motor. could result in movement of the loader during...
  • Page 170 IMPORTANT: Check the hydraulic oil level and add if required to insure sufficient oil for the test. 9. Using the EIC or a photo tach, set the engine speed to 2900 RPM (LS140) or 3200 RPM (LS150). 10. Stroke the control lever for the direction to be tested and take a free flow pressure reading and record.

  • Page 171: Hydraulic, Hydrostatic System Air Ingress Test

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION • HYDRAULIC, HYDROSTATIC SYSTEM AIR Examine transmission case drain tubes/hoses and fittings from the hydraulic INGRESS TEST motors and pumps to the suction side of the Hydraulic system air ingress, causing oil aeration, hydraulic pump.

  • Page 172: Hydrostatic Pumps

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC PUMPS Op. 29 100 40 REMOVAL The hydrostatic pump assembly can be removed from the top and front or the cab and boom can be tilted forward for more access, refer to Section 00 for the cab tilting procedure.
  • Page 173 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Raise the operator’s seat and latch in the raised position, 1. CAUTION Never work under a raised seat unless it is se- curely latched in the raised position. 7. Remove the step shield, 2, to access the hydro- static pump area.
  • Page 174 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 11. Remove the two front support pins, 1; remove the return spring retaining bolt, 2; and remove the neutralizer plate, 3. The hydrostatic control lever assemblies, 4, can be removed for more access.
  • Page 175 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 19. Support the front of the engine (flywheel end) and remove the hydrostatic pump support plate hard- ware, 1. 20. Remove the pump to bellhousing hardware, 2, and slide the pump assembly forward from the engine drive coupler.
  • Page 176 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op. 29 100 46 DISASSEMBLY 1. Thoroughly clean complete pump assembly be- fore teardown; plug ports so dirt and solvent do not enter the transmission. The complete hydrostatic pump assembly con- sists of these main components - left pump, 1;...
  • Page 177 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. To separate the back plate from the pump hous- ing, remove the four bolts, 1, and tap the back plate, 2, with a plastic or rubber mallet to sepa- rate it from pump housing, 3.
  • Page 178 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 8. Lift the rotating group parts out of the pump rotat- ing block and carefully lay them on cardboard to avoid damage. Mark the holes the piston came from with a soft marker (do not scratch a surface) so it can be inspected and the pistons can be re- assembled in the same holes in the block.
  • Page 179 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION The pump housing and needle bearing are shown with the shaft removed. To remove needle bearing, 1, press the bearing from the inside after the cam plate has been removed. The shaft and related parts.
  • Page 180 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION c. Remove the torx head screws, 1, and cover plate, 2, from the pintle shaft side. d. Remove seal, 1, and washer, 2. e. Remove bearing race, 1, and bearings, 2.
  • Page 181 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION The cam plate can be removed by sliding it sideways and lifting the short shaft end, out of the pump housing first. All cam plate parts are shown. Solid cover plate and hardware...
  • Page 182 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION PARTS INSPECTION Pump Housing 1. Shaft needle bearings, 1, are a tight press-fit in housing. Inspect for a loose bearing in the hous- ings. Also check for loose or missing needles in the bearing housing.
  • Page 183 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Piston and Shoe Assemblies Replace the rotating groups if: 5. The piston skirt area, 1, shows signs of scratches or wear. 6. The edges of the shoes, 2, are worn (shoe roll) from contact with the cam plate.
  • Page 184 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. The three block loading pins, 1, are spring loaded. They are held in place by the pin keeper (split bushing), 2. Check loading pins: – The pins should be the same height.
  • Page 185 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION REASSEMBLY 1. Use a suitable solvent to thoroughly clean all parts. Lay the parts on a clean cardboard and air dry. IMPORTANT: Due to tight tolerances and finish of pump internal surfaces, it is very important to main- tain absolute cleanliness during reassembly.
  • Page 186 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Insert the needle bearing, 1, and inner race, 2, over the short shaft end of the cam plate. The numbered end of the race and bearing should face outward, 3, and the chamfered ID of the race inward.
  • Page 187 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 9. Install shaft and bearing assembly, 1, into the housing. Install the washer, 2, and new shaft seal, 3; secure with retaining ring, 4. NOTE: The washer should be installed before the shaft seal.
  • Page 188 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 11. Invert the housing and insert the rotating piston block assembly, 1, into the housing. NOTE: Piston shoes must contact the cam plate. Be sure all parts are in their proper position before pro- ceeding.
  • Page 189 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 14. Attach the back plate, 1, to the pump housing making sure the replaceable plate, 2, stays in position; a small amount of Vaseline between plate and housing will help hold it in place. Install a new gasket, 3, between the plate and housing.
  • Page 190 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 16. Place the coupler, 1, on the spline shaft of one of the pumps and install a new O ring over the pump flange at 2. Slide the two pump assemblies to- gether and install the two 1/2″...
  • Page 191 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION REINSTALLATION 1. Lubricate the flex plate splines, 1, and pump splines with MOLY COATE GN PASTE or NEVER SEIZE. 2. Reinstall the pump assembly to the engine bellhousing. Align the spline pump shaft with the drive coupler.
  • Page 192 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 7. Reconnect all steering linkages and neutralizer plate. 8. Reinstall the control levers if removed. Refer to the operator’s manual for neutral adjustment pro- cedure and adjust the steering control levers for neutral.

  • Page 193: Hydrostatic Motor

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDROSTATIC MOTOR Op. 29 100 60 REMOVAL The hydrostatic motor assembly can be removed from the top and front or the cab and boom can be tilted forward for more access, refer to Section 00 for the cab tilting procedure.
  • Page 194 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Raise the operator’s seat and latch in the raised position, 1. Remove step shield, 2. CAUTION Never work under a raised seat unless it is se- curely latched in the raised position.
  • Page 195 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 10. Drain the hydraulic reservoir. a. Loosen the return line clamp, 1. b. Remove the return line at 2, and rotate the line into a suitable drain pan. 11. Remove the fender, 1, on the side the motor is being removed from.
  • Page 196 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 13. Remove the brake disc retaining ring, 1, and loosen the brake caliper attaching bolts at 2. Re- move both brake discs, 3, and remaining brake caliper parts. 14. Loosen the motor attaching hardware, 1, and ad- justing bolts, 2, enough to slide the motor rear- ward and remove the primary drive chain, 3.
  • Page 197 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op. 29 100 66 DISASSEMBLY NOTE: Dealer warranty adjustment requests for oil leak repairs, other repairs, or overhaul of the motor, must include the model number of the motor and date code.
  • Page 198 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Hold the rotating piston block, 1, in one hand and tilt the open end of the motor housing, 2, down. Rotate the piston block and pull it out as a com- plete unit without scratching or burring the parts.
  • Page 199 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 9. To remove the motor drive shaft, 1, from the mo- tor housing, remove retaining ring, 2, and tap the opposite end of the shaft with a soft mallet. The seal may be damaged during removal.
  • Page 200 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION PARTS INSPECTION Clean all parts in a suitable solvent and air dry prior to inspection. IMPORTANT: Due to close tolerances and finish of motor internal surfaces, it is important to maintain ab- solute cleanliness during inspection and reassembly or damage to the components may occur.
  • Page 201 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Camplate 1. Shoes of the motor pistons rotate at high speeds against the camplate surface at, 1. The surface must be smooth with no metal flaked away and no scoring. Circular scratches centered on the machined surface are due to contamination.
  • Page 202 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Rotating Piston Block Replace the rotating group if: 1. Cylinders, 1, are worn or scored so the pistons do not move freely. 2. Surface, 2, is worn or grooved or shows metal build-up.
  • Page 203 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Backplate 1. Check the backplate for flatness, 1. 2. The backplate needle bearing assembly, 2, is a press fit and should not be loose. Inspect for looseness and wear. Check that all needles are in the cage and move freely.
  • Page 204 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION REASSEMBLY 1. Use a suitable solvent to thoroughly clean all parts. Lay the parts on a clean cardboard and air dry. IMPORTANT: Due to tight tolerances and finish of motor internal surfaces, it is very important to main- tain absolute cleanliness during reassembly.
  • Page 205 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 5. Reassemble the motor drive shaft, 1, by installing a new retaining ring, 2; thrust washer, 3; thrust bearing, 4; and second thrust washer, 5. Secure with a second new retaining ring, 6.
  • Page 206 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 8. Reinstall the pistons and piston plate, 1, and spherical washer (pivot), 2, into the piston block, 3. Make sure the pivot is resting squarely on the loading pins, 4. 9. Invert the motor housing, 2, and insert the rotat- ing group assembly, 1, into the housing.
  • Page 207 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Press the bearing into the housing with the num- bered end, 1, facing the center of the motor as- sembly and to the dimension shown, 2.29 mm (0.09″) above the face of the backplate. The bearing is a pilot for the valve plate during assem- bly.
  • Page 208 When resealing, use a noncorrosive silicone sealer to prevent rust and corrosion of parts after assembled. 2. Place a bead of New Holland Ultra-Blue silicone sealer around the face of the motor mounting flange, 1, the inner face of the seal plate at 2, and under the heads of the motor attaching bolts.
  • Page 209 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 8. Reinstall the rear drive chain, 1, onto the drive sprocket at 2. Align the rear axle sprocket and install rear axle assembly, 3. 9. Slide the axle assembly rearward to tighten the drive chain, and torque the axle retaining hard- ware, 1, to 190 N·m (140 ft.
  • Page 210 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION CAUTION Securely support the skid-steer loader with all four wheels off the ground, or movement of the loader may cause serious injury or damage to the equipment. 19. If the cab and boom were tilted, return to the op- erating position.

  • Page 211: Hydraulic System Cleaning Procedure

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION HYDRAULIC SYSTEM CLEANING PROCEDURE After A Hydraulic System Or Transmission Overhaul The hydraulic/hydrostatic system must be cleaned if during repair the cause was from contamination and the transmissions show wear on the pistons and shoes, rotating piston blocks, valve plate or cam plate.
  • Page 212 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Remove the return line at 1, and rotate the line into a suitable drain pan. Thoroughly flush the reservoir with a suitable clean solvent or clean 10W-30 oil. 4. Remove the charge check valve, 2.
  • Page 213 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 7. Remove tube, 1, between the top of the oil cooler and the inlet to the hydraulic filter base. Also dis- connect the tube at the inlet to the oil cooler.

  • Page 214: Start-Up Procedure After Rebuild (After Pump Or Motor Replacement)

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION START-UP PROCEDURE AFTER REBUILD (AFTER PUMP OR MOTOR REPLACEMENT) 1. Fill the reservoir with SAE 10W-30 oil to the prop- er level. 2. Install a 21 bar (300 PSI) gauge in charge pres- sure test port, 1.
  • Page 215 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 7. Start the engine and monitor the charge pressure gauge to ensure charge oil for the hydrostatic system; the pressure reading should be 6.8 - 8.2 bar (100 - 120 PSI).

  • Page 216: Charge Check Valve

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION CHARGE CHECK VALVE Op. 29 100 36 REMOVAL AND REPLACEMENT 1. Lower the boom and bucket to the lowered posi- tion, resting on the ground, or remove any attach- ment and raise the boom and rest on the boom lock pins, 1.
  • Page 217 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Remove the right engine side shield to access the check valve, 1. 7. Remove the return line at 2, and cap to prevent the loss of oil. 8. Remove the check valve from the oil filter base at 3.

  • Page 218: Steering System

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op. 29 100 STEERING SYSTEM HYDROSTATIC SYSTEM CONTROLS Before any control linkage adjustments or repairs are made to the skid-steer loader, do the following: 1. Lower the boom and bucket to the lowered posi-...
  • Page 219 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Raise the operator’s seat and latch in the raised position, 1. CAUTION Never work under a raised seat unless it is se- curely latched in the raised position. 7. Remove the step shield, 2, to access the control linkages.

  • Page 220: Neutralizer Assembly

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION NEUTRALIZER ASSEMBLY Op 29 130 10 Neutralizer Removal 1. Remove the two front plate support pins, 1. 2. Remove the centering spring, 2, from the engine bellhousing. When removing the retaining bolt, 3, the spring will be under slight pressure.
  • Page 221 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Control Linkage Parts Inspection 1. Inspect the bushings, 1, in the control links; re- place if worn, loose, or damaged. 2. Inspect the sealed bearings, 1, and small bush- ings, 2.
  • Page 222 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 4. Inspect the blocks, 1, on the underside of the neutralizer plate. If worn, turn around for a new surface or replace the blocks. 5. Inspect the dampeners for equal pressures, leakage, and binding shafts.
  • Page 223 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Sealed Bearing Installation 1. Install the bushing, 1, and sealed bearing, 2, over the hole in the pintle arm. Install the capscrews, 3, into the pintle arm. 19990111 19990111 2. Make sure the bearing, 1, sits on top of the bush- ing, 2, over the pintle arm.
  • Page 224 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Neutralizer Reassembly and Adjustment 1. Loosely install the blocks, 1, to the neutralizer plate with 1/2″ x 3/4″ cap screws and large 1/2″ flat washers. 2. Slide the plastic guides, 1, into the slots on the neutralizer plate.
  • Page 225 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Install the neutral return spring assembly through the neutralizer plate at 1, and into the bellhousing cover at 2. The spring will require some compres- sion before the bolt can be installed; it can be compressed by hand.

  • Page 226: Left Control Handle With No Boom Control

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION LEFT CONTROL HANDLE WITH NO BOOM CONTROL Op. 29 100 10 REMOVAL 1. Securely latch the seat in the raised and latched position. Remove the step shield and front step cover to access the control handle, linkage and valve area.
  • Page 227 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION INSPECTION 1. Inspect the handle pivot bearings, 1; replace if worn or damaged. 2. Inspect the control handle for excessive wear or bends in the bearing mounting plates, 2, and piv- ot stub shafts, 3.
  • Page 228 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 2. Connect the hydrostatic pump control link, 1. 3. Reinstall all shields removed for the repair. 4802-10 29-83...

  • Page 229: Left Control Handle With Boom Control

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION LEFT CONTROL HANDLE WITH BOOM CONTROL Op. 29 100 11 REMOVAL 1. Securely latch the seat in the raised and latched position. Remove the step shield and front step cover to access the control handle, linkage and valve area.
  • Page 230 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION DISASSEMBLY 1. Take note of the number and position of all shim washers for reassembly. 2. Remove the bolt, 1, securing the ball end to the control arm. 3. Remove the jam nut, 2, and ball end, 3, from the rod, 4.
  • Page 231 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 10. Loosen the boot securing bolts, 1, and slide the boot, 2, off the handle. 19997750 INSPECTION 1. Inspect the handle pivot bearings, 1; replace if worn or damaged. 2. Inspect the pivot stub shafts, 2, for any obvious bends or deformation.
  • Page 232 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION REASSEMBLY 1. Install a new hand grip on the top of the handle, 1, if grip is worn. 2. Attach the ball end, 2, and jam nut, 3, to the rod, 4.
  • Page 233 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 12. Assemble the pivot shaft, 1, shim washers, 2, arm, 3, set collar, 4, and bearings, 5, into the con- trol arm housing. Fasten each bearing with two 5/16″ x 3/4″ carriage bolts, lock washers, and nuts at 6.
  • Page 234 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 2. Install the boom control rod, 1, on the left control handle arm, 2. 19996848 3. Connect the hydrostatic pump control link, 1. 4. Reinstall all shields removed for the repair.

  • Page 235: Right Control Handle With Auxiliary Or Bucket Control

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION RIGHT CONTROL HANDLE WITH AUXILIARY OR BUCKET CONTROL Op 29 100 15 REMOVAL 1. Securely latch the seat in the raised and latched position. Remove the step shield and front step cover to access the control handle, linkage and valve area.
  • Page 236 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION DISASSEMBLY 1. Take note of the number and position of all shim washers for reassembly. 2. Remove the bolt, 1, securing the ball end to the control arm. 3. Remove the jam nut, 2, and ball end, 3, from the rod, 4.
  • Page 237 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 10. Boom hydraulics control - Remove the locknut, 1, and bolt, 2, to separate the handle, 3, from the handle support, 4. Retain the bushing and caps- crew. Remove the ball end, 5, from the handle by removing the capscrew, 6, flat washer and lock- nut.
  • Page 238 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 13. Loosen the boot securing bolts, 1, and slide the boot, 2, off the handle. 19997750 INSPECTION 1. Inspect the handle pivot bearings, 1; replace if worn or damaged. 2. Inspect the pivot stub shafts, 2, for any obvious bends or deformation.
  • Page 239 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 6. Boom Hydraulics Control - Inspect the pivot han- dle linkage for looseness in the ball joints, 1; re- place if worn. 7. Boom Hydraulics Control - Inspect the pivot han- dle, 2, and handle support, 3, for damage or de- formation.
  • Page 240 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 10. Bucket control - Attach the handle and rod as- sembly, 1, to the control handle by first sliding the rod down through the control handle tube, 2. 11. Bucket control - Attach the handle assembly to the handle tube arms, 3, with the short carriage bolts, 4, lock washers, 5, and nuts, 6.
  • Page 241 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 21. Boom hydraulics control - Attach the handle and rod assembly, 1, to the control handle, 2, by first sliding the rod, 3, down through the control han- dle tube. 22. Boom hydraulics control - Position the handle support on the tube by aligning the setscrew, 4, with the drilled hole in the tube.
  • Page 242 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 27. Attach the ball end and jam nut, 1, onto rod, 2. Install spacer, 12, (OD - 7/16″; length - 15/32″) between the ball end and arm, 3. Secure with a 5/16″...
  • Page 243 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION 3. Connect the hydrostatic pump control link, 1. 4. Reinstall all shields removed for the repair. 4802-10 29-98...

  • Page 244: Drive Control Adjustment Procedure

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op 29 130 06 DRIVE CONTROL ADJUSTMENT PROCEDURE If the machine creeps (tires rotate slowly with steer- ing control in neutral) and the transmissions make a noise indicating they are being slightly stroked, a neutralizing adjustment is required.

  • Page 245: Neutral Adjustment

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Op 29 130 06 NEUTRAL ADJUSTMENT Before making any adjustments, make sure there is no binding in the control linkage, shocks, or neutraliz- er plate. The neutralizer plate, 1, should be free to move on the spring retaining bolt at the engine bell- housing and on the front slides.
  • Page 246 Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION Control Lever Parallel Adjustment The control levers, 1 and 2, are factory set at 9° to the front. The levers can be set for operator comfort and adjusted so the two levers are parallel. To adjust the levers, loosen bolts, 3, and move the levers to the de- sired position and retighten hardware.

  • Page 247: Labor Guide

    Copyright © New Holland SECTION 29 - HYDROSTATIC TRANSMISSION LABOR GUIDE HYDROSTATIC SYSTEM AND STEERING SYSTEM The following labor amounts are listed as a guide only. Working conditions and experience will vary the time it actually takes to complete each job.
  • Page 248 Copyright © New Holland SECTION 33 – BRAKES AND CONTROLS Chapter 1 – Parking Brake CONTENTS Section Description Page 33 000 General Information ............

  • Page 249: General Information

    Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS Op. 33 000 GENERAL INFORMATION Power for the skid steer ground drive is transmitted from the engine through a flex plate drive coupler to the hydrostatic pumps, 1. The hydrostatic pumps...
  • Page 250 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS The parking brake discs are connected to the hydro- static motor drive sprocket assembly at 1. The park- ing brake assembly is made up of two discs, 2, actua- tor shaft, pads, 3, and control handle and linkage.

  • Page 251: Specifications

    Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS SPECIFICATIONS Chain Case Side Cover Bolt Torque ............

  • Page 252: Troubleshooting

    Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS TROUBLESHOOTING FINAL DRIVE/PARKING BRAKE SYSTEM Before servicing or adjusting the final drive/parking brake system, the skid steer should be jacked up with the wheels off the ground. Remove any attachment from the skid steer boom, bucket, etc.
  • Page 253 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS TROUBLESHOOTING PARKING BRAKE SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION Parking brake will not hold skid Park brake not engaged Engage parking brake steer Brake not adjusted properly Adjust parking brake Handle not operating or latching...

  • Page 254: Testing

    Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS TESTING PARKING BRAKE Pre-test instructions: Operator in seat with seat belt buckled. Engine running at 1500 RPM. Park brake disengaged position. STEP TEST RESULT PROBABLE CAUSE AND CORRECTION Push both drive controls forward Brake system OK.
  • Page 255 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS Op. 33 110 PARKING BRAKE OPERATION The parking brake system is a mechanically acti- vated double disc brake system. The brake discs are attached to the hydrostatic motor shafts, 1, with a separate system located in each final drive case.
  • Page 256 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS REMOVAL AND INSPECTION To access and remove the parking brake control link- age, the seat can be raised and latched in the raised position. To access the brake disc and caliper as- sembly, the final drive inspection cover will need to be removed.
  • Page 257 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 5. Remove the tires and wheels from the final drive and brake being serviced. 6. Clean the axle and final drive area to prevent de- bris from entering the final drive case.
  • Page 258 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS Parking Brake Control Linkage and Related Parts Description Control handle and related parts Control shaft, bearings, support Spring assembly a. Spring b. Spring links (2) Friction pad Spring Disassembly 1. Compress spring plate and spring, 1, to expose enough shaft to clamp vise grips, 2.
  • Page 259 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS Inspection of Control Linkage Parts 1. Examine the latch plate, 1, and tab, 2. 2. Inspect the spring, 3, for correct free spring length, 66.7 ± 3.2 mm (2-5/8 ± 1/8″), 4. Replace if not within specification.
  • Page 260 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 2. Insert the button rod, 1, spring, 2, and flat washer, 3, into lever at 4. 3. Insert the new style latch plate, 5, and bushing, 6, with the extended area, 7, as shown to the rear (engine side) of lever and position the button rod so the hook is back of the latch plate at 8.
  • Page 261 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS Op. 33 110 48 Brake Caliper and Disc Removal The skid steer must be properly supported with all four wheels off the ground. 1. Remove the rear axle assembly and slide to the front to loosen the drive chain.
  • Page 262 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 9. Remove the jam nut and bolt, 1, from arm, 2, and slide the arm from shaft, 3. 10. Remove the caliper support retaining bolt, 4, and remove the support from the skid steer.
  • Page 263 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 2. Inspect the brake friction puck, 1. If worn severe- ly, replace. 3. The spacer plate, 2, will show a small amount of wear in the center next to the shaft at 3. This is normal.
  • Page 264 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 5. Inspect the caliper support, 1, and shaft thread area, 2. If damaged, the shaft will rotate hard in the support, replace the damaged part. Inspect the shaft seal, 3; replace if damaged. Inspect the control arm, 4, for damaged splines;...
  • Page 265 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 3. Install spacer plate, 2, next to the end of the shaft. Install the thick steel brake friction puck, 1. NOTE: NOTE: The thin spacer plate must be in- serted into the caliper support first, then the friction puck, to ensure proper brake operation.
  • Page 266 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 9. Install the brake disc retaining ring, 1. Check to make sure the brake caliper center section, 2, and brake discs, 3, are free to move when the brakes are released.
  • Page 267 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 13. Install the rear axle assembly. Slide the axle as- sembly to the rear and tighten the drive chain to obtain a movement of 0 - 6 mm (0 - 1/4″) move- ment at the outer tire tread.
  • Page 268 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time the job actually takes to complete each job. Job Description...
  • Page 269 Copyright © New Holland SECTION 33 - BRAKES AND CONTROLS 33-22...
  • Page 270 Copyright © New Holland SECTION 35 – HYDRAULIC SYSTEM Chapter 1 - Valves, Gear Pump, Cylinders, and Pedal Controls CONTENTS Section Description Page 35 000 General Information ............
  • Page 271 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Hydraulic Pump Installation ..........
  • Page 272 Figure 1 shows the hydraulic circuit and components gear pump provides continuous oil flow through the for the LS140 and LS150 skid steer loaders. system to the boom and bucket circuits, the auxiliary The hydraulic system is built with the following com- boom hydraulic circuit, if equipped, and the hydro- ponents and their location.

  • Page 273: Hydraulic System Compatibility

    If “NO”, install a check valve or cross into the at- NOTE: LS140 and LS150 loaders must have a tachment return line to prevent reverse oil flow to minimum of 22.7 l/min. (6 GPM) returning to the the attachment.
  • Page 274 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 7. Does the attachment require circuit relief in the bucket circuit? If “NO”, nothing is required. If “YES”, install a bucket circuit relief valve on front of the control valve. Example: Some mini-backhoes attach like a bucket, and require a bucket circuit relief.

  • Page 275: Boom Cylinder Pivot Pins

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM BOOM CYLINDER PIVOT PINS When the main boom, upper and lower boom links and cylinders are removed, the following figures and charts may be used for proper pin placement. The figure and chart show the boom and cylinder ta-...

  • Page 276: Control Valve Power Beyond

    Control valve, used on all skid-steer loaders, has a plugged power-beyond port, 1. This port is not nor- mally used with New Holland-supplied attachments, as these can be operated through the auxiliary boom hydraulics (the third control valve spool), 2.

  • Page 277: Specifications

    Double Acting Bore Diameter - LS140 .............
  • Page 278 ..............38 N·m (28 ft. lbs.) Boom Cylinders - LS140 Piston Locknut Torque .

  • Page 279: Troubleshooting

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM TROUBLESHOOTING When performing a test on the hydraulic system, use WARNING the proper test procedures and test equipment. Gauges, gauge fittings, and hoses must have op- Before testing, lower the attachment to the ground or erating pressure ratings of at least 25% higher remove the attachment from the loader.
  • Page 280 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION Noisy system pump Oil level too low Add proper oil and amount Oil of incorrect viscosity Replace oil and filter Suction line plugged Clean or replace line...
  • Page 281 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION Boom arms will not raise or raise Low oil flow from pump Plugged inlet line or worn pump slowly Low relief valve pressure Check pressure, replace valve if...
  • Page 282 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION Hydraulic system hot Low oil flow pump Plugged inlet line, clean or replace line Main control valve linkage or spool Check and correct linkage binding or damaged...

  • Page 283: Auxiliary Boom Hydraulics Troubleshooting

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM AUXILIARY BOOM HYDRAULICS TROUBLESHOOTING PROBLEM POSSIBLE CAUSE CORRECTION No oil flow to quick couplers Broken control linkage Check and repair linkage Inoperative quick coupler Repair or replace Plugged supply line Clean or replace...
  • Page 284 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Adjustments Control Handle Locked, 1, In Neutral Adjust the length of rod, 2, by threading the ball joints, 3, on or off, at both ends of the rod to set the link, 4, vertical.

  • Page 285: Hydraulic System Testing

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM HYDRAULIC SYSTEM TESTING Foot or hand controls and control valve spool locks: Pretest instructions: Hydraulic oil reservoir oil at proper oil level Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “OFF”...
  • Page 286 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Foot or hand control and control valve spool lock solenoids: Pretest instructions: Hydraulic oil reservoir oil at proper oil level Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “ON”...
  • Page 287 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Electronic instrument cluster (EIC) hydraulic oil filter light: Pretest instructions: Hydraulic oil reservoir oil at proper oil level Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “ON” position...
  • Page 288 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Boom lift check test: Pretest instructions: Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “ON” position Engine running half throttle, 1500 RPM STEP TEST...
  • Page 289 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Bucket operation: Pretest instructions: Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “ON” position Engine running half throttle, 1500 RPM STEP TEST RESULT PROBABLE CAUSE AND CORRECTION...
  • Page 290 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Bucket drift down test: Pretest instructions: Operator in seat Service/Run switch in “RUN” position Seat belt fastened Ignition switch in the “ON” position Engine running half throttle, 1500 RPM STEP TEST...

  • Page 291: Hydraulic System Oil Flow (Neutral Position)

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM HYDRAULIC SYSTEM OIL FLOW 5. With the control valve spools in neutral position, the oil flows through center of control valve, 5, to return line, 7. Control Valve - Spools in Neutral Position 6.

  • Page 292: Control Valve - Bucket Spool Shifted

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM CONTROL VALVE - BUCKET SPOOL 1. Oil flows from the gear pump, 1, through pres- sure line, 2, to control valve, 3. SHIFTED 2. When the bucket valve spool, 4, is pulled out, the...

  • Page 293: Control Valve - Boom Spool Shifted

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 3. When the boom valve spool, 4, is pushed in, the CONTROL VALVE - BOOM SPOOL oil flows from the front port, 6, to the shaft end of SHIFTED boom cylinders, to lower the boom.

  • Page 294: Control Valve - Auxiliary Spool Shifted

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 3. When the auxiliary valve spool, 4, is pushed in, CONTROL VALVE - AUXILIARY SPOOL the oil flows from the front work port, 5, and sup- SHIFTED plies oil to the male quick coupler, 9, at the front of the boom.

  • Page 295: Main System Pressure Tests

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 710 02 MAIN SYSTEM PRESSURE TESTS Check the main system pressure to insure the main relief valve is within specifications to provide ade- quate working pressure to the hydraulic system.
  • Page 296 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM The hydraulic system pressures are factory set. Changes to the settings should not be necessary. To access the control and relief valve area, raise the seat and seat pan to the raised latched position, 1. Be sure the seat support rod is latched securely at 2, be- fore working under a raised seat.
  • Page 297 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM The main system relief valve, 1, is located in the con- trol valve. If there is some reason to suspect incorrect pressure, check the pressures as follows: WARNING Gauges, gauge fittings, and hoses must have op- erating pressure ratings of at least 25% higher than the highest pressures of the system.

  • Page 298: Checking Main System Pressure At Boom Cylinders

    Turn off the key. 3. Install the pressure test gauge in the boom cylin- der at 1. 4. Start the engine and run it at full throttle (LS140 at 3070 RPM - 3150 RPM; LS150 at 3410 RPM - 3480 RPM).

  • Page 299: Checking Main System Pressure At Bucket Cylinders

    Turn off the key. 3. Install the pressure test gauge in the left bucket cylinder at 1. 4. Start the engine and run it at full throttle (LS140 at 3070 RPM - 3150 RPM; LS150 at 3410 RPM - 3480 RPM).

  • Page 300: Checking Main System Pressure At Auxiliary Boom Hydraulic Quick Couplers

    Turn off the key. 3. Install the pressure test gauge in one of the quick couplers at 1. 4. Start the engine and run it at full throttle (LS140 at 3070 RPM - 3150 RPM; LS150 at 3410RPM - 3480 RPM).

  • Page 301: Boom Circuit Relief Valve Test

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM BOOM CIRCUIT RELIEF VALVE TEST The boom circuit is equipped with a circuit relief valve, 1, located in the boom control valve. This valve will protect the cylinders and lines when the control valve spool is in the neutral (centered) position.
  • Page 302 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. Boom control valve spool in the neutral (cen- tered) position. 6. Remove the rear boom hydraulic line, 1, and cap the line. Install the hydraulic hand pump and pressure gauge to the rear port in the control valve.

  • Page 303: Gear Pump Flow Efficiency Test

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM GEAR PUMP FLOW EFFICIENCY TEST Fittings and gauges required: 1. Hydraulic flow tester - 115 l/min (30 GPM) capac- ity. 2. Male and female 1/2″ quick couplers for units equipped with auxiliary boom hydraulics.
  • Page 304 5. Turn the resistance valve, 1, on tester to “O” setting. 6. Start the engine and adjust the throttle to 2900 RPM for the LS140 and 3200 RPM for the LS150. 7. Operate the auxiliary control handle by pivoting down to pressurize the male quick coupler and inlet hose to tester.
  • Page 305 8. Start the engine and adjust the throttle to 2900 RPM for the LS140 and 3200 RPM for the LS150. 9. Operate the bucket control to dump the bucket for proper oil flow to the inlet hose and tester.
  • Page 306 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 11. Turn the resistance valve on the tester to apply EXAMPLE: resistance in the hydraulic system to obtain the 10 GPM free flow Step 10. following specifications: 7.5 GPM flow Step 11.

  • Page 307: Boom And Bucket Spool Lock Solenoid Test

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM BOOM AND BUCKET SPOOL LOCK SOLENOID TEST The boom and bucket control valve solenoid spool locks are controlled by the EIC (Electronic Instru- ment Cluster). The operator must be in the operator’s seat with the seat belt buckled for the EIC to unlock the control valve spool lock solenoids.
  • Page 308 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Electrical test procedure: 1. Lower the boom and attachment to the ground or remove any attachment, raise the boom, and rest the boom on the boom lock pins at 1. 2. Raise the seat and latch securely in the raised latch position, 1.

  • Page 309: Hydraulic, Hydrostatic System Air Ingress Test

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM HYDRAULIC, HYDROSTATIC SYSTEM AIR INGRESS TEST Hydraulic system air ingress, causing oil aeration, The following checks should then be performed to can affect performance of the hydraulic oil. This may trace the source of the air ingress.
  • Page 310 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM CONTROL VALVE Specifications Type ............... . .
  • Page 311 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM CONTROL VALVE Op. 35 724 50 REMOVAL 1. Lower the boom and bucket to the lowered posi- tion (resting on the ground), or remove any at- tachment and raise the boom and rest on the boom lock pins, 1.
  • Page 312 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 6. Drain the hydraulic reservoir by disconnecting the return line, 1, at tee, 2, and drain the oil into a suitable container. 7. Unplug the spool lock solenoids, 1. 8. Remove the pressure line, 2, and return line, 3;...
  • Page 313 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 724 54 DISASSEMBLY AND INSPECTION Main System Relief Valve The non-serviceable, non-adjustable, cartridge- type main system relief valve, 1, is set at 170 - 177 bar (2500 - 2600 PSI). The relief valve should not be re-...
  • Page 314 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Remove the boom circuit relief valve, 1, from the valve body. NOTE: The boom circuit relief valve protects the lift circuit against high pressure related damage caused by external forces acting against the boom. The valve is factory set at 241 bar (3500 PSI), is not ad- justable, and must be replaced if malfunctioning.
  • Page 315 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 1. Thoroughly clean the control valve and unscrew the allen head capscrews, 1, on the caps. 2. Remove the caps, 2, from the rear of the valve body. 19984471 NOTE: Before removing the spools, make sure the...
  • Page 316 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. The complete control valve components include: 1. Main system relief valve 2. Boom circuit relief valve 3. Plugs 4. Caps 5. Plain control spool cap 6. Detent control spool caps 7.
  • Page 317 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PARTS INSPECTION Inspect the control valve components thoroughly for scratches or nicks, weak centering springs, weak lift check springs, and scored lift checks or valve seats. Valve Body, 1 1. Check for cracks in casting that allow an oil leak.
  • Page 318 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REASSEMBLY 1. Install O rings, 1, in the boom control spool ports, the bucket control spool ports, and auxiliary con- trol spool ports. 19984473 2. Install the O ring seals, 1, on the boom circuit re- lief valve, 2, and all the plugs, 3.
  • Page 319 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 6. Install the plug, 1, into the port, 2, over the main relief valve port. Install the plug, 3, into the port, 4, over the auxiliary control spool. 19984469 7. Install new O rings, 1, on the spools.
  • Page 320 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 10. Install the control spools into the valve body - bucket, 1, boom, 2, auxiliary, 3. 11. Reinstall the boom lower orifice plate, 4, with the slot towards the fitting in port, 5.
  • Page 321 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 14. Add O rings to the lift check valve caps, 1. Install the lift checks, 2, springs, 3, and caps. 15. Install the two caps, 4, with O rings into the valve body.
  • Page 322 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REINSTALLATION 1. Place the rubber isolation mount, 1, in place un- der the control valve space. 2. Reinstall the control valve into the skid steer with the retaining hardware previously removed.

  • Page 323: Hydraulic Pump Installation

    HYDRAULIC PUMP Specifications 26000 Series Type Gear Pump LS140 Output @2900 RPM - 69 bar (1000 PSI) 40.1 L/min (10.6 GPM) LS150 Output @3200 RPM - 69 bar (1000 PSI) 44.3 L/min (11.7 GPM) Rotation (Viewed from shaft end) Clockwise...
  • Page 324 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 710 10 PUMP REMOVAL 1. Lower the boom and bucket to the lowered posi- tion (resting on the ground), or remove any at- tachment and raise the boom and rest on the boom lock pins.
  • Page 325 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 6. Drain the hydraulic reservoir. a. Loosen the return line, 1, at clamp, 2. b. Remove the return line at 3, and rotate the line into a suitable drain pan. 7. Remove the suction line, 1, and cap to prevent loss of oil.
  • Page 326 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 710 20 DISASSEMBLY Identify the pump by the two series of numbers and letters on the pump flange at 1. = Series = Features 0-Standard Single Gear Pump = Displacement Code = Rotation (left, counterclockwise) = Catalog No.
  • Page 327 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PARTS INSPECTION 1. Inspect the pump front plate (drive end) for ex- cessive wear. The oil grooves in the bushings in the front plate should be in line with the dowel pin- holes and 180_ apart, 1.
  • Page 328 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 6. The wear plate, 1, should be replaced when the pump is rebuilt. The flat Teflon-coated surface to- wards the gears should not show any scratches or grooves that can be caught with a fingernail.
  • Page 329 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REASSEMBLY 1. Coat all parts with a thin coat of petroleum jelly or oil to aid in reassembly. 2. Install a new washer, 1, and shaft seal, 2, in the pump front plate (drive end), 3. The seal is pressed into the housing to a depth of 6.35 mm...
  • Page 330 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. Install the seal, 1, and backup gasket 2, on the wear plate, 3. BE SURE that the flat area, 4, on the gasket AND seal, 5, are properly aligned and lay flat when installed in the wear plate.
  • Page 331 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 7. Install the drive gear, 1, into the housing, 2. Install the idler gear, 3, into the housing. Rotate the gears to help slide them into the gear pockets. 19984493 8. Install the pump back plate, 1, over the gear shafts.
  • Page 332 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM INSTALLATION 1. Install a new O ring on the pump housing at 1. 2. Reinstall the pump into the loader by attaching it to the hydrostatic pump at 2. Torque the mount- ing hardware to 39 N·m (29 ft.

  • Page 333: Cylinders, Boom And Bucket

    Specifications Bore Diameter - LS140 .............

  • Page 334: Boom Cylinder Removal

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM BOOM CYLINDER Op. 35 710 10 REMOVAL CAUTION Before removing the boom cylinders, the boom must be in the up, locked position supported by the boom lock pins. Never loosen any hydraulic lines without first re- lieving all pressure in the system.
  • Page 335 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 8. Support the cylinder and with a hammer strike the cylinder at the base area, 1, to loosen the ta- pered pivot pin from the loader main frame. 9. Remove the UPPER boom cylinder pin retaining bolt, 1, and boom pin, 2.
  • Page 336 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 730 18 DISASSEMBLY 1. Thoroughly clean the outside of the cylinder. 2. Pull the piston rod out slowly, and drain the oil from the barrel into a suitable container.
  • Page 337 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 6. Remove the wiper seal, 1, O ring and backup washer, 2, and inner seal and wear ring, 3, from the cylinder head (gland), 4. 7. Remove the wear ring, 1, and seal, 2, from the piston, 3.
  • Page 338 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. Inspect the outer diameter of the piston, 1, for ex- cessive wear or scoring. If the piston is damaged, the inner surface of the barrel will also most likely be damaged. Inspect the barrel thoroughly. If the piston is not damaged, do not replace.
  • Page 339 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REASSEMBLY 1. Clean and dry all parts. The metal parts should be lightly oiled prior to assembly. 2. Install a new O ring, 1, and backup washer, 2, in the outer groove of the cylinder head, 3. Install a new shaft seal, 4, and wear ring, 5, in the inner grooves.
  • Page 340 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 8. Lubricate the piston and cylinder head assem- blies with 10W-30 oil and install the piston rod as- sembly, 1, into the barrel, 2. 9. Prior to threading the cylinder head into the bar-...

  • Page 341: Bucket Cylinder Removal

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM BUCKET CYLINDER Op. 35 730 10 REMOVAL CAUTION Never loosen any hydraulic lines without first re- lieving all pressure in the system. 1. Remove any attachment, bucket, etc. from the boom attaching plate and lower the boom to the lowered position.
  • Page 342 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 730 13 DISASSEMBLY The bucket cylinder, 1, is the threaded gland style de- sign. For proper disassembly and repair: 1. Clean the outside of the cylinder and clamp the cylinder base, 2, in a vise.
  • Page 343 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PARTS INSPECTION 1. Thoroughly clean all parts and remove all nicks and burrs with a fine emery cloth. 2. Inspect the inner diameter of the barrel for exces- sive wear or scoring.
  • Page 344 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. Slide the cylinder gland, 1, and new piston with seals installed, 2, onto the piston rod, 3. Make sure the recess in the piston is positioned over the end of the rod.

  • Page 345: Pedal Controls

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PEDAL CONTROLS Op. 35 724 16 REMOVAL With Boom and Bucket Pedal Controls 1. Remove the step shield hardware and step shield. 2. Remove the bolt, 1, washer, lock washer, and nut, that connects the control rod, 2, to the pedal hub arm.
  • Page 346 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 2. Inspect the control valve links for any obvious damage, bends or twisting. 19996894 3. Inspect the auxiliary hydraulic hub arm, 1, the boom hub arm, 2, and the bucket hub arm, 3, for any deformation or cracks.

  • Page 347: Pedal Reinstallation (With Boom And Bucket Pedal Controls)

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 7. Inspect the shaft bearings, 1, for excessive wear. If bearings do not move easily, replace. 19996826 8. Inspect the pedals, 1, and pedal supports, 2, for any excessive wear or deformation.
  • Page 348 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 2. Install the left pedal assembly, 1, and attach the front plate with hardware, 2, previously removed. Do not tighten the hardware at this time. 3. Slide the pedal assembly to align the auxiliary boom hydraulic hub arm and boom hub arm as shown.
  • Page 349 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 7. Install the control spool links, 1, with clevis pins, 2, and cotter pins, 3. 8. Attach each link to each hub arm with 3/8″ hex head bolts, 4, flat washer, 5, two link washers, 6, lock washer, 7, and nut, 8.

  • Page 350: Pedal Removal With Boom And Bucket Hand Controls

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 724 16 PEDAL REMOVAL With Boom and Bucket Hand Controls 1. Remove the step shield hardware and step shield. 2. Remove the bolts, 1, washers, lock washers, and nuts, that connect the control rods, 2, to the pedal hub arms.

  • Page 351: Pedal Inspection (With Boom And Bucket Hand Controls)

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM PEDAL INSPECTION With Boom and Bucket Hand Controls 1. Remove the bucket hub arm assembly, 1, and the boom hub arm assembly, 2. Inspect the hub arm assemblies for any deformation or cracks.

  • Page 352: Pedal Reinstallation With Boom And Bucket Hand Controls

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 5. Inspect the pedals, 1, and pedal supports, 2, for any excessive wear or deformation. 19996827 6. Inspect the control valve spool links, 1, for bends or excessive wear. 19996829 PEDAL REINSTALLATION With Boom and Bucket Hand Controls 1.
  • Page 353 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 3. Install the left pedal assembly, 1, and attach the front plate with hardware, 2, previously removed. Do not tighten the hardware at this time. 4. Install the boom hub assembly, 3, and bucket hub assembly, 4, onto the pivot shaft, 5.
  • Page 354 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 10. Install the control spool links, 1, with clevis pins, 2, and cotter pins, 3. 11. Link the boom valve link and the bucket valve link to the hub arms with 3/8″ hex head bolts, 4, flat washer, 5, thick link washer, 6, lock washer, 7, and nut, 8.

  • Page 355: Hydraulic Cooling, Filter, Reservoir System

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM HYDRAULIC COOLING, FILTER, RESERVOIR SYSTEM Specifications Filter (spin-on canister) ..............

  • Page 356: Filter System

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 705 FILTER SYSTEM The skid-steer loader is equipped with a single spin- on filter canister type located at 1, to the right of the engine radiator. The filter is a 10-micron element.

  • Page 357: Reassembly

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REASSEMBLY 1. Reinstall the filter base with the hardware pre- viously removed and reconnect the ground wire, 1. Torque the mounting hardware to 20 N·m (15 ft. lbs.). 2. Reinstall the hydraulic lines, tighten the lines to seat line on fittings and loosen and retorque.
  • Page 358 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 8. Remove the fan shroud retaining hardware, 1, to access the oil cooler. 9. Remove the oil cooler, 2, retaining hardware to separate the cooler from the radiator. REASSEMBLY 1. Reattach the oil cooler to the support with the previously removed hardware.

  • Page 359: Oil Reservoir

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 300 OIL RESERVOIR The hydraulic oil reservoir fill is accessed through the top engine shield. The fill cap assembly is the hydrau- lic system breather and is equipped with a screen to help prevent contamination from getting into the sys- tem.

  • Page 360: Oil Reservoir Removal

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM Op. 35 300 10 OIL RESERVOIR REMOVAL To access the reservoir, open the rear door and re- move the right engine side shield. To remove the reservoir from the loader, the cab and boom must be tilted forward.
  • Page 361 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM REINSTALLATION 1. If removed, reinstall and clamp the short section of hose at the reservoir inlet, 1. 2. With the engine raised, reinstall the reservoir from the rear, sliding the reservoir at 2, between the engine bell housing and the loader frame.

  • Page 362: Labor Guide

    Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM LABOR GUIDE HYDRAULIC SYSTEM The following labor amounts are listed as a guide only. Working conditions and experience will vary the time it actually takes to complete each job. Hours Remove and replace control valve .
  • Page 363 Copyright © New Holland SECTION 35 - HYDRAULIC SYSTEM 35-94...
  • Page 364 Copyright © New Holland SECTION 37 – TOWING HOOKS AND BALLASTING Chapter 1 – Rear Counterweights CONTENTS Section Description Page 37 140 10 Rear Counterweights ............
  • Page 365 Copyright © New Holland SECTION 37 - TOWING HOOKS AND BALLASTING Op. 37 140 10 REAR COUNTERWEIGHTS Counterweights can be installed to improve the stability of the loader when handling heavy loads or when operating the skid-steer loader with a heavy front mounted attachment.
  • Page 366 Copyright © New Holland SECTION 39 – FRAMES Chapter 1 – Lower Main, ROPS CONTENTS Section Description Page General Information ............
  • Page 367 Copyright © New Holland SECTION 39 - FRAMES GENERAL INFORMATION CAB AND ROPS The cab/ROPS, 1, is a welded frame structure to pro- vide rollover protection for the operator and pivot point locations for the boom assembly. 39-2...
  • Page 368 Copyright © New Holland SECTION 39 - FRAMES CAB AND ROPS This section describes how to remove and install the cab, ROPS, and boom as an assembly. Op. 90 152 46 REMOVAL 1. Lower the boom to the lowered, down position and relieve all hydraulic oil pressure in the boom, bucket and auxiliary hydraulic circuits.
  • Page 369 Copyright © New Holland SECTION 39 - FRAMES 6. Remove the right and left headliner supports re- taining hardware, 1, and remove both supports and headliner, 2. 7. Remove the fuse panel retaining hardware and lower the fuse panel. DO NOT remove any wires from any switches or fuse blocks.
  • Page 370 Copyright © New Holland SECTION 39 - FRAMES 12. Remove the front light bezels and unplug the wire harness from the bulb, 1. 13. Remove the rear window locking molding, 1, and remove the window from the frame and molding.
  • Page 371 Copyright © New Holland SECTION 39 - FRAMES 17. Remove the cover plate, 1, and all wire harness retaining clamps, 2. 18. Remove the retaining screws, 1, from the front shield, 2, and remove shield. 19. Remove the wire harness from the right side of the cab, right rear cab post and ROPS at 1.
  • Page 372 Copyright © New Holland SECTION 39 - FRAMES 20. Remove the right and left fenders. 21. Remove the throttle cable from the control lever at 1. Remove yoke, 2, from cable and cable re- taining nut, 3, to allow the cable to be removed from the ROPS.
  • Page 373 Copyright © New Holland SECTION 39 - FRAMES 23. Remove the cotter pins from the parking brake control link springs at 1. Unhook the spring link from the control rod, 2. 19992572 24. With the boom in the lowered position, discon-...
  • Page 374 Copyright © New Holland SECTION 39 - FRAMES 26. Attach lift chains to the front of the boom at 1, through the box beam member. CAUTION Always use a suitable lifting device and chains or straps to support the rops/boom assembly, which weighs approximately 1800 lbs.
  • Page 375 Copyright © New Holland SECTION 39 - FRAMES 29. With the boom properly supported, remove the rear ROPS attaching hardware, 1, right and left sides. 30. Remove the front ROPS attaching hardware, 1, right and left sides. Remove the ground strap, 2, from the ROPS post at 3.
  • Page 376 Copyright © New Holland SECTION 39 - FRAMES 3. Install the rear ROPS post hardware, 1. Make sure the wire harness and throttle cable are to the inside of the post at 2. Tighten the front and rear retaining hardware at this time.
  • Page 377 Copyright © New Holland SECTION 39 - FRAMES 7. Reattach the parking brake control link springs at 1, to the control rods, 2, and install the retaining cotter pins at 3. 19992572 8. Route the throttle cable up through the cab frame at 1, and secure the cable housing to the frame with retaining nut, 2.
  • Page 378 Copyright © New Holland SECTION 39 - FRAMES 12. Route the wire harness up through the slot in the left rear of the cab at 1, and along the rear of cab at 2. 13. Route the wire harness up the inside of the right rear cab post, 3, and to the front of the cab to the service/run switch and ignition switch areas.
  • Page 379 Copyright © New Holland SECTION 39 - FRAMES 17. With the front section of the wire harness secure, pull any slack harness to the rear and route the harness along the right side of the ROPS and re- install the service/run switch panel.
  • Page 380 Copyright © New Holland SECTION 39 - FRAMES 23. Removing the slack from the wire harness along the top of ROPS at 1, and along the top of the final drive case at 2, pull the slack to the front and re- taining loop at 3.
  • Page 381 Copyright © New Holland SECTION 39 - FRAMES 27. Reattach the ground strap from the lower main frame to the ROPS post at 1. 28. Reconnect the seat and seat belt wire harness connector, 1. IMPORTANT: IMPORTANT: Make sure the seat/ main wire harness connector is to the front of the boom lock pin linkage, 2.
  • Page 382 Copyright © New Holland SECTION 39 - FRAMES LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time the job actually takes to complete each job. Job Description Hours Remove and replace ROPS frame 18.5...
  • Page 383 Copyright © New Holland SECTION 39 - FRAMES 39-18...
  • Page 384 Copyright © New Holland SECTION 44 – AXLES AND WHEELS Chapter 1 – Axles CONTENTS Section Description Page 44 100 General Information ............

  • Page 385: General Information

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS Op. 44 100 GENERAL INFORMATION Power for the skid-steer loader ground drive is trans- mitted from the engine through a flex plate drive cou- pler to the hydrostatic pumps, 1. The hydrostatic...
  • Page 386 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 1 - HYDROSTATIC PUMP LH 2 - HYDROSTATIC PUMP RH 3 - HYDROSTATIC MOTOR LH 4 - HYDROSTATIC MOTOR RH 5 - PRIMARY DRIVE CHAIN (2) 6 - FINAL DRIVE SPROCKET ASSEMBLIES (2)

  • Page 387: Specifications

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS SPECIFICATIONS Drive Axles Wheel Bolt Torque ............

  • Page 388: Troubleshooting

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS TROUBLESHOOTING FINAL DRIVE SYSTEM Before servicing or adjusting the final drive system, the skid-steer loader should be jacked up with the wheels off the ground. Remove any attachment from the skid-steer loader boom, bucket, etc.
  • Page 389 Copyright © New Holland SECTION 44 - AXLES AND WHEELS PROBLEM POSSIBLE CAUSE CORRECTION Both drive wheels on one side not No hydrostatic motor shaft rotation Check for pump to motor oil flow powered and repair Broken drive chain Check chains and repair...

  • Page 390: Testing

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS TESTING FINAL DRIVE Pre-test instructions: Operator in seat with seat belt buckled. Engine running at high idle (full throttle). Park brake disengaged position. STEP TEST RESULT PROBABLE CAUSE AND CORRECTION Push both drive controls for- Drive system OK.

  • Page 391: Axles

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS Op. 44 106 AXLES Op. 44 106 10 AXLE HOUSING ASSEMBLY REMOVAL The axle housings must be removed to service axle seals, axle bearings, drive chains, drive sprockets, and axle housing mounting bolts.
  • Page 392 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 4. Remove the tire and wheel from the axle being serviced. 5. Clean the axle and final drive area to prevent de- bris from entering the final drive case. 6. Remove the eight axle housing retaining nuts and washers, 1.
  • Page 393 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 5. The outer axle seal, 1, may be replaced at this time without further disassembly. The seal can be replaced without removing the bearing, 2. 6. Install a bearing separator/puller and remove the outer axle bearing, 2.
  • Page 394 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 10. Shown here are the related parts used in the axle assembly. Ref. Description Housing Axle and hub assembly Outer seal Outer bearing assembly Inner bearing assembly Shims Retaining ring...
  • Page 395 Copyright © New Holland SECTION 44 - AXLES AND WHEELS REASSEMBLY 1. Install the outer seal, 1, as shown, on the axle- hub assembly. Fill the grooves in the seal with grease. 2. Pack the bearing with grease and install the outer bearing, 2, with a suitable bearing driver.
  • Page 396 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 10. Pack the inner bearing with grease and install over the axle assembly at 1. Press the inner bearing on the axle shaft and into the housing to obtain a housing rolling torque of 4 - 7 kg (9 - 15 lbs).
  • Page 397 Copyright © New Holland SECTION 44 - AXLES AND WHEELS REINSTALLATION 1. Clean the final drive case. 2. Inspect the axle opening in the case to make sure that it is flat for a good seal between the case and axle housing.
  • Page 398 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 6. With the axle housing tight against the case at 1, install the retaining nuts and flat washers, 2, to hold the housing against the case. 7. Slide the axle housing assembly to tighten the drive chains.

  • Page 399: Final Drive

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS FINAL DRIVE The final drives transfer power from the hydrostatic motors to the drive axles through the primary drive chains, intermediate shaft assemblies and final drive chains and sprockets. The axle housing assemblies and final drive case covers will need to be removed to access the drive chains and sprockets.
  • Page 400 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 4. Remove the tires and wheels from the final drive being serviced. 5. Clean the axle and final drive area to prevent de- bris from entering the final drive case.
  • Page 401 Copyright © New Holland SECTION 44 - AXLES AND WHEELS Primary Drive Chain and Sprocket Removal The primary drive chain and sprocket assembly con- nects the hydrostatic motors to the final drive chains at the intermediate drive shaft assembly. 10. Remove the final drive chains, 1, from the drive sprocket at 2.
  • Page 402 Copyright © New Holland SECTION 44 - AXLES AND WHEELS d. Remove the inner brake friction puck, 1, and the spacer plate, 2. The inside caliper, 3, does not need to be removed. 12. Loosen the hydrostatic motor retaining bolts, 1, and chain adjusters, 2.
  • Page 403 Copyright © New Holland SECTION 44 - AXLES AND WHEELS Primary Drive, Intermediate Shaft Assembly Re- moval After removal of the brake assembly and primary drive chain and sprockets, the primary drive, inter- mediate shaft assembly can be removed. The shaft is press fit into a hub welded to each chain case.
  • Page 404 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 20. Remove the wear ring at 1. 21. Using a puller arrangement as shown at 1, re- move the shaft assembly from the hub. Place a flat plate or large flat washer under the puller bolts at 2, to prevent damage to the chain case.
  • Page 405 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 23. Remove the bearing cups, 1, if damaged or worn. Use a hammer and suitable driver to drive them from the hub. Front Drive Chain and Sprocket Removal 24. With the intermediate shaft assembly removed, slide the chain and sprocket to the center of the chain case opening.
  • Page 406 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 29. Shown here are the final drive components. Ref. Description Drive sprockets (2 each side) Front drive chain LS140 LS150 #60 chain #80 chain 80 links 60 links Rear drive chain...
  • Page 407 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 4. Inspect both the primary and final drive chains in the following areas: a. Broken or cracked rollers at 1. b. Cracked, bent or broken side bars, 2. c. Looseness or wear between the pins and side bars at 3.
  • Page 408 9. If removed, reinstall the bearing cups, 1, into the intermediate shaft hub, using a suitable hammer and driver. 10. Repack the intermediate shaft bearings with New Holland high viscosity lithium grease and install the inner bearing onto the shaft. 44-25...
  • Page 409 14. Place a bead of noncorrosive silicone sealer around the cover plate at 1, and tap into place. NOTE: NOTE: Lubricate the shaft and bearing as- sembly with New Holland high viscosity lithium grease at 2, rotating the shaft to ensure the cavity is filled with grease.
  • Page 410 Copyright © New Holland SECTION 44 - AXLES AND WHEELS Primary Drive Chain and Sprockets Installation 15. Install the large primary drive sprocket, 1, over the final drive sprockets, 2. Install retaining ring, 3, to correctly position the sprocket. 16. Clean the old sealant from the motor flange, seal plate and attaching hardware, 4.
  • Page 411 Copyright © New Holland SECTION 44 - AXLES AND WHEELS Parking Brake Reinstallation 22. Clean the old sealant from the brake hardware. 23. Install the spacer plate, 1, and brake friction puck, 2, into the inner caliper at 3. NOTE: NOTE: The spacer plate is thinner than the brake friction puck and must be inserted into the brake caliper first.
  • Page 412 Copyright © New Holland SECTION 44 - AXLES AND WHEELS 29. Install the front final drive chain, 1, over the inner drive sprocket, 2, and the rear chain, 3, over the outer drive sprocket, 4. 30. Install the axle housings, 1, and tighten the drive chains.

  • Page 413: Tires/Wheels

    276 kPa (40 PSI) MAINTAIN PROPER TIRE INFLATION! NOTE: NOTE: Latco “Air Boss” segmented tires are approved for all new generation New Holland loader models. These tires must be mounted with the wheel dish “in” to the frame (narrowest wheel tread posi- tion).

  • Page 414: Tire And Track Installation

    A pneumatic tire will absorb this type of stress and, in severe cases, may deflate before damage to the loader or track oc- curs. New Holland only recommends pneumatic tires be installed with tracks. 44-31...

  • Page 415: Loader Boom Stop Adjustment

    Two boom stop spacer shims, #86524347, 1, one each side are required for two tire options as indi- cated by the following chart. The spacers can be ob- tained from your New Holland Dealer. Boom Stop Shim Chart Boom Stop...
  • Page 416 Copyright © New Holland SECTION 44 - AXLES AND WHEELS To install the boom stops, first raise the boom and rest on the boom lock pins. Remove the two retaining bolts from the stop plates and add or remove a shim as required.

  • Page 417: Labor Guide

    Copyright © New Holland SECTION 44 - AXLES AND WHEELS LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time the job actually takes to complete each job. Job Description...
  • Page 418 Copyright © New Holland SECTION 50 – CAB CLIMATE CONTROL Chapter 1 – Heater/Defroster CONTENTS Section Description Page 50 100 Heater/Defroster (Cab) ............
  • Page 419 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL Op. 50 100 HEATER/DEFROSTER (CAB) Switch and Control Panel 8. Disconnect the negative (-) battery cable to pre- vent possible shorting of the electrical system. 9. Remove the switch assembly retaining hard- ware, 1.
  • Page 420 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL Heater Wiring Diagram Louver Replacement 1. To remove the louver, use a small flat screwdriver and pry the louver from the support base at 1. 50-3...
  • Page 421 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL 2. Remove the four #6 self-tapping screws, 1, from the base and remove the base from the head- liner. Heater Core, Shutoff Valve and Fan Assembly Access To access the heater core and/or fan assembly, the rear light bar, 1, (if equipped with lights) and top heater cover, 2, must be removed.
  • Page 422 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL Op. 50 104 23 Heater Shutoff Valve Replacement 1. Drain the cooling system enough to drain the coolant from the core, about 2 liters (2 quarts). 2. Remove the electrical connector, 1.
  • Page 423 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL 2. Heater hose from the heater shutoff valve to the plug in the top of the water pump at 1. Op. 50 100 10 Heater Core Connections Connect the pressure hose from the water pump to the left side hose, 1, and the return block hose, 2, to the right side.
  • Page 424 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL Check the filter element, 1, periodically, especially if running in dirty applications and using the fresh air ventilation. The element can be blown off with a low- pressure air gun and reused or replaced. The ele- ment must be placed with the rubber seal toward the heater core.
  • Page 425 Copyright © New Holland SECTION 50 - CAB CLIMATE CONTROL LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time it actually takes to complete each job. Job Description Hours...
  • Page 426 Copyright © New Holland SECTION 55 – ELECTRICAL SYSTEM Chapter 1 – Advanced Warning System, Circuits, Alternator, and Starter CONTENTS Section Description Page 55 000 General Electrical Information ..........
  • Page 427 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Ignition Switch Circuit to EIC Board ......... .
  • Page 428 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Road Light and Work Light Switch Installation ....... . .
  • Page 429 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 55 414 24 Hydraulic Oil Filter Restriction Switch Removal .......
  • Page 430 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 55-5...

  • Page 431: General Electrical Information

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 000 GENERAL ELECTRICAL INFORMATION The electrical system is a 12-volt negative (–) ground 6. Fuse blocks/ fuses/ circuit breakers, cab and system that provides battery voltage to the Electronic...

  • Page 432: Definition Of Terms

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM DEFINITION OF TERMS ALTERNATING CURRENT (A.C.) - A flow of OHM - The standard unit for measuring resistance to electrons which reverses its direction of flow at flow of an electrical current.
  • Page 433 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM The following are common terms used in electrical The following chart shows the abbreviations for the diagnostics and how they may affect the circuit and various wire colors used to identify the electrical electrical components.

  • Page 434: Adapting Attachments Requiring 12V Electrical Power

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ADAPTING ATTACHMENTS REQUIRING 12V ELECTRICAL POWER There are important rules that must be followed when adapting attachments that require 12 volt electrical power. Proper wiring of electrical devices and power and ground connections is very important to prevent other electrical component damage.
  • Page 435 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Engine Fuse Panel Wires and connections available providing electrical attachments were not previously installed: Ref. Color Destination Fuse Battery Voltage Status To turn signal relay 10-amp All times Available R/GY To accessory relay...
  • Page 436 Figure 4 shows circuits for intermittent high current loads up to 15 amps. Figure 6 shows the circuit for intermittent high current loads up to 30 amps. New Holland sealed circuit breakers that can be purchased from parts. Part Number Capacity 9827329...

  • Page 437: Specifications

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SPECIFICATIONS Alternator ................
  • Page 438 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Hydraulic oil temperature sensor ....... .
  • Page 439 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR SERVICE SPECIFICATIONS Item How Rated Standard Or Service Limit Normal Output (V - A) 12 V - 40 A Polarity Negative ground Weight (kg, lbs) 3.7 kg (8.2 lbs) Rotational direction (viewed from...

  • Page 440: Electrical Diagram

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ELECTRICAL DIAGRAM 55-15...
  • Page 441 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 55-16...
  • Page 442 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 55-17...
  • Page 443 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 55-18...

  • Page 444: Advanced Warning System

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 418 ADVANCED WARNING SYSTEM ELECTRONIC INSTRUMENT CLUSTER (EIC) The Skid Steer advanced warning system, 1, monitors engine functions and operator controls and reports conditions to the operator and provides safety interlocks to the hydraulic control valve spools to the boom and bucket.

  • Page 445: (Eic) Electronic Instrument Cluster Front Panel

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 3. RIGHT ARROW DISPLAY SELECTOR EIC (ELECTRONIC INSTRUMENT SWITCH CLUSTER) FRONT PANEL The display selector switch, covered with an 1. AUDIBLE ALARM “ARROW” symbol, will cause an audible “chirp” when The audible alarm will sound if there is an unusual pressed if the ignition key is in the “RUN”...

  • Page 446: Eic Functional Groups

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC FUNCTIONAL GROUPS The EIC display panel is divided into four functional groups, 1 through 4. 5. Engine hours, displayed to 0.1 hours (no light). FUNCTIONAL GROUP 1 Those symbols in display group 1, backlighted white are: 6.
  • Page 447 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FUNCTIONAL GROUP 2 Those symbols in display group 2, backlighted yellow are: 4. Parking brake. Used to remind operator to engage the parking brake when exiting the skid steer. An audible alarm will sound when the operator begins to exit 1.
  • Page 448 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FUNCTIONAL GROUP 3 The symbol in display group 3 is: 1. Fuel gauge. The fuel gauge, 1, is a vertical 10-segment green LED bar graph. When the fuel level reaches three bars, 2, the segments will flash accompanied by an audible alarm for about 5 seconds.
  • Page 449 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FUNCTIONAL GROUP 4 Symbols in display group 4 are backlighted red. When a fault occurs, the flashing lamp is accompanied by the audible alarm. 5. Coolant temperature. When the engine coolant temperature is above operating temperature of 102°C (216°F) the...
  • Page 450 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CONTINUOUSLY MONITORED ELEMENTS The following machine elements are continuously monitored by the EIC: 5. Hydrostatic charge pressure. When the pressure drops below normal operating pressure the lamp will flash with a continuous alarm.

  • Page 451: Engine Preheat

    For additional Damage to the engine and/or transmissions may pre-heat if the skid steer does not start, turn the occur. Contact your New Holland dealer for ignition key to the “OFF” position. Then turn the assistance.

  • Page 452: Operating Mode

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM If a fault occurs in the following monitored functions, OPERATING MODE the EIC will automatically show that function’s By pressing and releasing the “ARROW” switch, 1, reading in the character display, accompanied by a during normal skid steer operation, the operator can flashing light and a five second audible alarm.
  • Page 453 Contact your New Holland dealer for assistance. _______________________________________________________________________________________________ If a fault occurs in the following monitored functions...

  • Page 454: Broken Alternator/Water Pump Belt Warning

    OILS for the engine and/or the hydrostatic transmissions. DO NOT restart the skid steer more than once or operate the engine at high engine speeds. Damage to the engine and/or transmission may occur. Contact your New Holland dealer for assistance. 55-29...

  • Page 455: Fuel Level

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FUEL LEVEL Fuel level is shown to the operator by the fuel gauge bar lights located in the center of the EIC display at 1. The operator will be signaled when the level is at three bars and again at two bars.

  • Page 456: Eic Lock Mode

    If the two digit code is forgotten, the EIC can be enter any number from “0” - “9” for the left digit. unlocked by using a (MASTER CODE). Contact your NEW HOLLAND dealer for assistance. 9. Press and release the “ARROW” switch, 1, the right zero will start to flash.

  • Page 457: Eic Engine Preheat

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC ENGINE PREHEAT The engine preheat is governed automatically by the EIC based on coolant temperature and engine code. Preheat is initiated when the ignition key is turned to the “RUN” position and the cycle time will vary from 0 - 20 seconds.

  • Page 458: Troubleshooting

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM TROUBLESHOOTING ELECTRONIC INSTRUMENT CLUSTER (EIC) PROBLEM POSSIBLE CAUSE CORRECTION EIC board will not light up when Service/run switch in service Push switch to run position operator sits in seat position Faulty seat switch...
  • Page 459 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION EIC will not read correct engine Incorrect engine configuration Correct configuration RPMs, varies more than ± 50 RPMs No AC voltage at tachometer Repair alternator terminal at alternator...
  • Page 460 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM PROBLEM POSSIBLE CAUSE CORRECTION Engine will not start and/or run Seat belt unbuckled Buckle seat belt Incorrect engine configuration Correct configuration (EIC) No battery voltage to start relay Open in power wire from key switch “start”...

  • Page 461: Advanced Warning System (Aws)

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ADVANCED WARNING SYSTEM (AWS) The AWS provides the following features for dealer technician use in diagnostics and troubleshooting of This skid steer is equipped with an Advanced the monitored function circuits: Warning System (AWS) that provides information to the operator about the operation of the skid steer.

  • Page 462: Eic Board Self Test

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 3. The EIC will enter the normal start up mode. EIC BOARD SELF TEST When first sitting in the operator’s seat and/or before 4. Turning the ignition key to the “ON” position will entering Diagnostics, allow the EIC board to self test.

  • Page 463: Diagnostic And Setup Modes

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 5. Display, 3, will show the program level of the EIC DIAGNOSTIC AND SETUP MODES board (example - r0100); at this time, release the When in the Diagnostic Mode, the technician can test “OPEN BOOK”...
  • Page 464 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC Diagnostics and Setup Items Diagnostics Mode With display showing “LOC_ _” for lock. 1. Press and release the “ARROW” switch, 1; “dIAg” will appear in the character display, 2. _______________________________________________________________________________________________ 2.

  • Page 465: Arrow, Open Book, And Audible Alarm Test

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ARROW, OPEN BOOK, AND AUDIBLE ALARM TEST In this mode, by pressing the “ARROW,” 1, or “OPEN BOOK,” 2, switches, all of the display segments are turned on for verification and at the same time with an audible beep.
  • Page 466 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 2. Air Cleaner Switch Remove one wire at a time from the sensor switch, 1, on the air cleaner canister. Remove the B wire and the EIC board will light and beep when the wire is removed from the switch.
  • Page 467 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 5. Coolant Temperature Sensor Remove the PU/LTGN wire, 1, from the sensor and short the wire to ground. The EIC board will light and beep when the wire is removed from the sender and grounded.
  • Page 468 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 8. Seat Switch and Circuit Raise your weight off the center of the seat and then sit back on the seat. The EIC board will light and beep. If the board lights and beeps, the switch and circuit are OK.

  • Page 469: Eic Setup Mode

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC SETUP MODE r-CAL - Adjust Engine RPM • The EIC Setup Mode is made up of several items: Calibrate EIC display to external RPM tach reading. FAULt - Fault/Warning history CLr F - Clear Faults •...
  • Page 470 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FAULt - Fault/Warning history With display showing “LOC_ _” for lock. 1. Press and release the “ARROW” switch, 1; “dIAg” will appear in the character display. Then press and release the “ARROW” switch again;...
  • Page 471 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Press and hold the “OPEN BOOK” switch, 1, until “F0-XX” appears in the display. The “F0” is the fault and the “XX” is the number of occurrences of that fault since the fault memory was last cleared. The fault code display will be accompanied by an illuminated front panel symbol identifying the fault.
  • Page 472 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Pressing and releasing the “ARROW” switch again will forward to the next fault “F1-00” and pressing and releasing the “OPEN BOOK” switch again will display the hour of the last occurrence if any fault occurrences were shown.
  • Page 473 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Once all faults have been identified, the fault history can be cleared to zero. To return to “FAULt” and clear the faults, press and hold the “ARROW” switch, 1, until the original “FAULt”...
  • Page 474 7. Press and release the “OPEN BOOK” switch to enter the right number of the engine code, example Eng 05 for the LS140 skid steers as shown in display 1. The engine code is as follows. 05 - LS140, LS150 To exit this item, press and hold the “ARROW”...
  • Page 475 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Unit F or Unit C (EIC Reading Fahrenheit or Celsius) With display showing “LOC_ _” for lock. 1. Press and release the “ARROW” switch; “dIAg” will appear in the character display. Then press and release the “ARROW”...
  • Page 476 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM r-CAL - Adjust Engine RPMS With display showing “LOC_ _” for lock. 1. Press and release the “ARROW” switch; “dIAg” will appear in the character display. Then press and release the “ARROW” switch again; “SEtUP”...

  • Page 477: Electronic Instrument Cluster (Eic) And Starter Circuits

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ELECTRONIC INSTRUMENT CLUSTER (EIC) AND STARTER CIRCUITS BLOWN FUSE SYMPTOMS AND TESTING Electronic Ignition Fuse, 1 (Cab Fuse Panel - 5A) Service/Run Switch “Run” Position 1. Board shows self test (with operator in seat).
  • Page 478 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM IMPORTANT: If any servicing or adjustments require the battery to be disconnected, or welding is required on the skid steer, disconnect the negative (–) ground cable. Failure to disconnect the battery may result in damage to the EIC (Electronic Instrument Cluster) monitoring system and other electrical components.

  • Page 479: Testing Other Eic Functions

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM TESTING OTHER EIC FUNCTIONS NOTE: These tests are performed with the EIC in the normal operating mode and the “SERVICE/RUN” switch in the “RUN” position. 1. Parking Brake Light Sit in the seat with the seat belt buckled. After the EIC board self test, the parking brake light, 1, should flash.
  • Page 480 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 3. Boom and Bucket Spool Locks, 1 (Control valve spools in neutral and boom and bucket resting on the ground) a. Sit in the seat. After the EIC board self tests, turn the ignition switch to the “ON”...
  • Page 481 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 4. Boom and Bucket Spool Lock Solenoid Test (Voltage Test) To perform the following test, the operator must be sitting in the seat, seat belt buckled, and the ignition “key” switch in the “RUN” position.

  • Page 482: Eic Board Reading Accuracy

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC BOARD READING ACCURACY EIC board readings for the digital display, including RPM, Battery Voltage, Hourmeter, Engine Coolant Temperature, or Hydraulic Oil Temperature may not be accurate or may have no reading when selected.
  • Page 483 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM All grounding locations should be checked for tight hardware and absence of paint between parts for good connecting, as follows: 1. Check the grounding strap from the engine to main frame, 1.

  • Page 484: Eic Board Claims Warranty

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC BOARD CLAIMS WARRANTY When filing a warranty claim for a defective EIC (Electronic Instrument Cluster) board, include the part number and serial number on the white tag of the defective board.

  • Page 485: Electrical Circuits

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ELECTRICAL CIRCUITS EIC (ELECTRONIC INSTRUMENT CLUSTER) From there power continues through the (R) wire to The EIC board receives power from five different the battery side of the start relay. The power points.

  • Page 486: Seat Switch Circuit To Eic Board

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM The power continues through the (LTGN/R) wire to SEAT SWITCH CIRCUIT TO EIC BOARD the seat switch. When one seat switch (only 1 switch Battery voltage needs to be closed as switches are in parallel wiring) (Service/Run switch in “RUN”...

  • Page 487: Seat Belt Switch Circuit To Eic Board

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SEAT BELT SWITCH CIRCUIT TO EIC When the seat belt is buckled, the power proceeds through the (LTGN) wire to the EIC board terminal 11 BOARD of connector P2. Battery voltage...
  • Page 488 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM IGNITION SWITCH CIRCUIT TO EIC BOARD When the ignition key switch is turned to the “ON” position, power continues through the (O/PU-2) wire to the Electronics 5-amp fuse in the cab fuse panel.
  • Page 489 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CRANKING CIRCUIT (STARTER MOTOR) Operating conditions with “SERVICE/RUN” switch in the “RUN” position: To start the engine with the “SERVICE/RUN” switch in the “RUN” position, 1, the operator must be in the seat with the seat belt buckled.
  • Page 490 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM “SERVICE/RUN” SWITCH IN THE “RUN” Power then flows from the service/run switch through the (W/LTGN) wire to the start interlock relay coil POSITION terminal. The power originates at the battery and flows through the (R) positive battery cable to the starter solenoid.
  • Page 491 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CRANKING CIRCUIT GROUND The start interlock relay is grounded through the (B-4) wire to the ground terminal on the start relay. The system ground (B-6) wire then goes to the ground terminal of the preheat relay. The system ground (B-8) wire then goes to the engine ground at the bell housing.
  • Page 492 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SERVICE/RUN SWITCH IN THE “SERVICE” With the service/run switch in the “SERVICE” position, power goes through the (W/DKBL) wire POSITION from the service/run switch to the start relay to The power originates at the battery and flows through activate the relay.
  • Page 493 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CRANKING CIRCUIT GROUND The start interlock relay is grounded through the (B-4) wire to the ground terminal on the start relay. The system ground (B-6) wire then goes to the ground terminal of the preheat relay. The system ground (B-8) wire then goes to the engine ground at the bell housing.
  • Page 494 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START RELAY CIRCUIT and the start interlock relay is energized by the W/LTGN wire from the service/run switch, the start The power originates at the battery and flows through relay receives energizing power from the seat/seat the (R) positive battery cable to the starter solenoid.
  • Page 495 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START RELAY GROUND CIRCUIT The start relay is grounded through the (B-6) wire to the ground terminal on the preheat relay and then through the (B-8) wire to the engine bell housing.
  • Page 496 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START INTERLOCK CIRCUIT When the interlock is “satisfied” that the service/run switch is in the “RUN” position and the operator is “SERVICE/RUN” switch in the “RUN” position. sitting in the seat with the seat belt buckled, power...
  • Page 497 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START INTERLOCK GROUND CIRCUIT the switch in the “SERVICE” position, power flows from the key switch “START” terminal via the W wire The interlock is grounded through the B-4 wire to the...
  • Page 498 (wrenches, screwdriver, etc.) or instructions from New Holland telling you to do so or magnets. Severe damage to the EIC board may damage and false readings with the EIC board may occur.
  • Page 499 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM BATTERY Op. 55 301 40 REMOVAL 1. Raise the boom and rest it on the boom lock pins, CAUTION Never work under a raised boom unless it is properly supported by the boom lock pins.
  • Page 500 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC (Electronic Instrument Cluster) BOARD REMOVAL Op. 55 418 10 1. Disconnect the negative (–) battery cable. 2. Remove the retaining hardware, 1, and remove the EIC board from the overhead dash area.
  • Page 501 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM EIC (Electronic Instrument Cluster) WIRING NOTE: There are two different style EIC board connectors as shown here. Board Harness Connector #1 Connector #1 (J1) (P1) Wire Color Pin Number Pin Number...
  • Page 502 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM INSTALLATION 1. Connect the wire harness connectors P1 to J1 and P2 to J2 on the EIC board, making sure the connectors are properly aligned and fully seated. IMPORTANT: If the connector is not connected correctly, damage to the EIC may occur: •...
  • Page 503 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM IGNITION (KEY) SWITCH WIRING Battery Color Destination Voltage O/LTBL To Four-Way Flashing Key “ON” lights 10A Fuse (cab position panel) To Beacon Light 7.5A Fuse (cab panel) LTGN/B To EIC Board Pin #11 Key “ON”...
  • Page 504 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CAB FUSE PANEL WIRING STANDARD FUSE BLOCK Battery Color Destination Voltage O/LTGN (15A Fuse) From Key “ON” Accessory Relay position (engine panel) (If equipped with lights or other acces- sories). (15A Fuse) To Road/ Key “ON”...
  • Page 505 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM CAB FUSE BLOCK AND PANEL REMOVAL 1. Disconnect the negative (–) battery cable. 2. Remove the panel retaining hardware, 2, and lower the panel, 1. Removal of the headline support, 3, will give more access.
  • Page 506 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SERVICE/RUN SWITCH WIRING SERVICE POSITION RUN POSITION SERVICE/RUN SWITCH - SERVICE SERVICE/RUN SWITCH - RUN POSITION POSITION Battery Color Destination Voltage Battery Color Destination Voltage W/DKBL To Start Relay (engine panel) “START”...
  • Page 507 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 418 30 SERVICE/RUN SWITCH REMOVAL 1. Disconnect the negative (–) battery cable. 2. Remove panel, 1; retaining hardware, 2; and lower panel from the support. Removal of panel, 3, may be required for easier access.
  • Page 508 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SEAT AND SEAT BELT SWITCH WIRING Battery Color Destination Voltage LTGN To EIC Board Pin Seat Belt #11 (large Buckled connector) From Seat Sit in Switch(es) Seat To Seat Belt switch...
  • Page 509 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SEAT SWITCH INSTALLATION 1. Install the switch(es) into the seat pan, making sure the switch is seated into the hole in the seat pan, 1. IMPORTANT: If the switch is not seated properly when the retaining hardware is tightened, the switch flange will be broken.
  • Page 510 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ROAD LIGHT AND WORK LIGHT SWITCH WIRING Switch Pushed in at Top Battery Color Destination Voltage PK/B To Taillights DKBL/W To Front Road/Work Light DKBL/W To Front Road/Work Light DKBL To Rear Work Light From 15A Fuse (cab Key “ON”...
  • Page 511 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 404 20 ROAD LIGHT AND WORK LIGHT SWITCH REMOVAL 1. Disconnect the negative (–) battery cable. 2. Remove the switch panel retaining hardware, 1, and lower the panel. 3. Remove the wires and connector from the switch terminals.
  • Page 512 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ENGINE FUSE AND RELAY PANEL The engine panel electrical components are shown here: 1. Accessory relay 2. Heater power relay (if equipped, not shown) 3. Preheat circuit breaker 4. Start interlock relay 5.
  • Page 513 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ACCESSORY RELAY WIRING Battery Color Destination Voltage O/LTGN To Attachment/Horn Key “ON” 15A Fuse position LTGN/ To Turn Signal Relay Key “ON” or Heater Power position Relay LTGN/B From Key Switch Key “ON”...
  • Page 514 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM PREHEAT CIRCUIT BREAKER WIRING Battery Color Destination Voltage R/LTBL To Preheat Relay All Times To Start Relay All Times From 15A Key Main All Times Fuse Engine Fuse Block Op. 55 100 24 PREHEAT CIRCUIT BREAKER REMOVAL 1.
  • Page 515 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START INTERLOCK RELAY WIRING Service/Run Switch - Run Position Battery Color Destination Voltage W/LTGN From Key “START” Service/Run position Switch From Cab Fuse Key “ON” Panel position Electronic Ignition Fuse LTBL/O To Fuel Solenoid Key “ON”...
  • Page 516 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 100 34 START INTERLOCK RELAY REMOVAL 1. Disconnect the negative (–) battery cable. 2. Disconnect the wires from the terminals, 1. 3. Remove the interlock relay, 2, retaining hardware.
  • Page 517 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ENGINE FUSE PANEL WIRING STANDARD FUSE BLOCK Battery Color Destination Voltage (10A Fuse) To Turn All Times Signal Relay R/GY (25A Fuse) To All Times Accessory Relay R/LTGN (5A Fuse) To EIC...
  • Page 518 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ENGINE FUSE BLOCK REMOVAL 1. Disconnect the negative (–) battery cable. 2. Remove the fuse block retaining hardware. NOTE: The standard fuse block, 1, is part of the main harness and cannot be completely removed from the main wire harness and replaced separately.
  • Page 519 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR EXCITE RESISTOR WIRING Color Destination Y/DKBL To Alternator LTGN/B-1 From Accessory Relay LTGN/B-3 To Alternator Op. 55 301 16 ALTERNATOR EXCITE RESISTOR REMOVAL 1. Disconnect the negative (–) battery cable.
  • Page 520 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM START RELAY WIRING Battery Color Destination Voltage To 20A Heater Fuse All Times (optional fuse block) To Preheat Circuit All Times Breaker From Starter All Times Solenoid To Starter Solenoid “START”...
  • Page 521 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM PREHEAT RELAY WIRING Service/Run Switch - Service Position Battery Color Destination Voltage R/LTBL From Preheat Circuit All Times Breaker LTBL/B To Glow Plugs Push Button LTBL/Y From Manual Push Preheat Button...
  • Page 522 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 100 34 PREHEAT RELAY REMOVAL 1. Disconnect the negative (–) battery cable. 2. Remove the relay cover, 2, attaching hardware and cover. 3. Remove the wires from the relay terminals.
  • Page 523 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 201 76 PREHEAT GLOW PLUG REMOVAL 1. Disconnect the negative (–) battery cable. 2. Disconnect the LTBL/B wire, 1, from the glow plug bus bar. 3. Remove the bus bar retaining nuts, 2, and remove the bus bar, 3, from the glow plugs.
  • Page 524 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM FUEL SYSTEM COMPONENTS The fuel system consists of a fuel tank located in the left side of the engine compartment at 1; fuel tank pickup tube, 2; fuel tank sending unit, 3; inline fuel filter, 4;...
  • Page 525 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM TESTING FUEL GAUGE IN DIAGNOSTIC MODE Use a jumper wire and connect sender terminals, 1, and the EIC board will light and beep. If the EIC board lights and beeps, the EIC and circuit wires to the sender are OK.
  • Page 526 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ELECTRIC FUEL PUMP The electric fuel pump, 1, is located in the left side of the engine compartment. ELECTRIC FUEL PUMP TESTING PRETEST PROBABLE CAUSE AND STEP TEST RESULT INSTRUCTIONS CORRECTION...
  • Page 527 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 10 210 21 ELECTRIC FUEL PUMP REMOVAL 1. Support the boom on the boom lock pins. 2. Open the rear door and remove the left engine side shield. 3. Remove the hose clamps, 1, from the pump and hoses.
  • Page 528 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 10 223 10 REPLACEMENT OF FUEL SHUTOFF SOLENOID 1. Support the boom on the boom lock pins. 2. Open the rear door and remove the left engine side shield. 3. Remove the power wire from the solenoid, 1.
  • Page 529 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM AIR FILTER RESTRICTION INDICATOR SWITCH Op. 55 414 14 REMOVAL 1. Support the boom on the boom lock pins. 2. Open the rear door and remove the left engine side shield to access the sender.
  • Page 530 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ENGINE OIL PRESSURE SWITCH Op. 55 414 12 REMOVAL 1. Support the boom on the boom lock pins. 2. Open the rear door and raise the top engine shield to access the switch.

  • Page 531: Hydraulic Oil Filter Restriction Switch Removal

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM HYDRAULIC OIL FILTER RESTRICTION SWITCH Op. 55 414 24 REMOVAL 1. Support the boom on the boom lock pins. 2. Open the rear door, raise the top engine shield and remove the right engine side shield to access the switch.
  • Page 532 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 4. Loosen the return line clamp at 1. 5. Remove the return line at 2, and rotate the line so the oil drains into a clean suitable pan for reuse. 6. After the reservoir is drained, reconnect the return lines and tighten all fittings and connections.

  • Page 533: Boom/Bucket Control Valve Spool Lock Solenoids

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM BOOM/BUCKET CONTROL VALVE SPOOL LOCK SOLENOIDS Op. 35 724 90 REMOVAL 1. Remove any attachment from the loader attaching plate. 2. Raise the boom and support on the boom lock pins.

  • Page 534: Wire Harness

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM WIRE HARNESS Op. 55 100 74 MAIN WIRE HARNESS REMOVAL 1. Remove any attachment from the loader attaching plate. 2. Raise the boom and support on the boom lock pins, 1.
  • Page 535 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 6. Remove the right side plate, 1, and headliner, 2, if equipped. Unhook all wire connections at the service/run switch, preheat button, and fuse block(s) at this time. 19997757 7. Remove the EIC board retaining hardware, 1, unplug the EIC board and remove from the dash.
  • Page 536 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 9. Remove the wire harness wire clamps, 1, from the right rear corner of the cab (shown with seat and seat support removed). 10. Raise the operator’s seat and latch in the raised latched position, 1.
  • Page 537 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 12. Remove the step shield, 1, to access the control valve area. 19992564 13. Disconnect the control valve connectors, 1, remove the harness from the J clamp, 2, on the valve and pull the harness out through the left fender area.
  • Page 538 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 15. Remove all wire harness retaining clamps from the main wire harness at the rear and left side of the loader frame, 1. (Cut wire ties along the right side of the rear window if so equipped and any ties retaining the optional harness to the main harness.

  • Page 539: Main Wire Harness Installation

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 20. Remove the wire harness, 1, from the right rear of the engine after disconnecting the charge pressure sender, 2, and oil filter switch, 3. 19990113 21. Remove the wire harness from the cab area...
  • Page 540 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 4. Place the main wire harness to the front side of the boom lock linkage at 1, and reinstall the wire clamps. 5. Route the wire harness to the front of the loader on the left side and install wire clamps where previously installed.
  • Page 541 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 9. Remove any paint, rust, and dirt from the grounding surface and attach the ground wires at the engine bellhousing ground stud, 1. NOTE: When attaching ground wires, always place the heaviest ground wire (battery ground cable) next to the ground surface (bellhousing).
  • Page 542 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 13. Route the wire harness to the front of the cab to the ignition switch and EIC board area. Attach the wires to the ignition switch and position the wire harness to prevent damage. Reinstall the switch panel, 1.

  • Page 543: Road/Work Lights

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 404 ROAD/WORK LIGHTS The road and work lights provide illumination for road travel and work operations. The rear work lights are not recommended for road travel. Road/work light switch, 1, is located in the ignition key switch panel in the upper right corner of the overhead dash.
  • Page 544 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Road/Work Light Switch Wiring Road/Work Light Wiring Diagram NOTE: When attaching ground wires, always place the heaviest ground wire next to the ground surface and then stack the remaining ground wires according to size on top of the heaviest wire.
  • Page 545 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Bulb Replacement Clear lens with bulb #86533429 Bulb only (clear) #86533428 Red lens with bulb #9829515 Bulb only (red) #C6AB13465A Op. 55 404 10 Front Road/Work Light 1. Facing the lens of the light assembly, push the lens assembly to the left and lift the right side of the assembly from the support.
  • Page 546 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 404 10 Rear Work and Taillight 1. Remove the center work light, 1, by pushing the lens assembly to the left and lift the right side of the assembly from the support.

  • Page 547: Alternator (40 Amp Version)

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 301 Principle of the Integrated Circuit Regulator The basic circuit of the IC regulator is shown here. ALTERNATOR (40 AMP VERSION) The portion enclosed by the dashed line represents the regulator.
  • Page 548 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM The basic operating principles are explained as 3. When the generated voltage is low, no current follows: flows in the Zener diode (DZ) since the voltage at point A is lower than the Zener voltage.

  • Page 549: Alternator Service Specifications

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR SERVICE SPECIFICATIONS Item How Rated Standard Or Service Limit Normal Output (V - A) 12 V - 40 A Polarity Negative ground Weight (kg, lbs) 3.7 kg (8.2 lbs) Rotational direction (viewed from...

  • Page 550: Alternator System Testing And Troubleshooting

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR - SYSTEM TESTING AND TROUBLESHOOTING NO CHARGING FAULT LOCATION POSSIBLE CAUSE CORRECTION Wiring Loose connection, short circuit Repair Alternator Loose connection, no ground, short Repair or replace circuit Defective rectifier...
  • Page 551 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM UNSTABLE CHARGING CIRCUIT FAULT LOCATION POSSIBLE CAUSE CORRECTION Wiring Loose connection or open wire Repair or replace Alternator Loose drive belt Repair Short in rotor coil Replace Short in stator coil...
  • Page 552 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Alternator Construction The principal components of the IC alternator are the IC voltage regulator, 1, the rotor, 2, the pulley, 3, the rectifier assembly, 4, the rear support bracket, 5, the stator, 6, and the front support bracket, 7.

  • Page 553: Service Precautions

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM SERVICE PRECAUTIONS INITIAL TESTS Observe the following service precautions to avoid Certain initial tests may be performed without damage to the charging system: removing any of the charging components from the loader.
  • Page 554 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Alternator wiring connections test 1. Disconnect the battery negative cable. 2. Disconnect the B+ cable (Red/ Dark Blue) from the alternator B+ post, 1, and Field Excitation lead (Light Green/Blue), from the alternator L post, 2.
  • Page 555 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Charging Circuit Voltage Drop Tests Insulated Side Voltage Drop Tests 1. With the key start switch in the “off” position, disconnect the battery negative cable and the B+ cable from the alternator B+ terminal, 1.
  • Page 556 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Ground Side Voltage Drop Test 1. Ensure the key start switch is in the off position. 2. Test connections are the same as the previous test except that the voltmeter, 3, is now connected between the negative post of the battery and the alternator frame.
  • Page 557 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Alternator Maximum Output Performance Test 1. With the key start switch in the off position, disconnect the battery negative cable and the B+ cable from the alternator B+ terminal, 1. 2. Connect an ammeter, 2, of 60 amp minimum...
  • Page 558 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR Op. 55 301 10 REMOVAL 1. Raise the boom and rest it on the boom lock pins, 1. Open the rear door, 2; raise the top engine shield, 3; and remove the right engine side shield, 4, to access the alternator.
  • Page 559 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 301 12 DISASSEMBLY 1. Mark both brackets and the stator with a scribe mark for reassembly. 2. Remove the four through bolts. Pry between the stator and front bracket with the blade of a screwdriver.
  • Page 560 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 4. Remove the voltage regulator assembly, 1, and rectifier assembly, 2. Op. 55 301 14 Alternator Component Tests Rotor 1. Inspection of slip ring surface, 1. Polish discoloration or scratches on the slip ring surface with 400# - 600# grit sandpaper.
  • Page 561 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 3. Check for continuity between the slip ring and shaft (or core). If there is continuity, it means the coil or slip ring is shorted. Replace the rotor assembly. SM463-175 Stator 1.
  • Page 562 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Rectifier Assembly Positive Heat Sink Check for continuity between the positive (+) heat sink and stator coil lead connection terminal with a circuit tester. If there is continuity in both directions, the diode is short-circuited.
  • Page 563 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Brush and Brush Spring Check the length of the brush. A brush worn down to the wear limit line should be replaced. Check the brush spring pressure and make sure the brush moves smoothly in the brush holder.
  • Page 564 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Bench Check To check the alternator on a test bench, proceed as follows: 1. Connect the alternator as shown, except leave the load resistor disconnected. 2. Slowly increase the alternator speed and observe the voltage.

  • Page 565: Alternator Reinstallation

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM ALTERNATOR REINSTALLATION 1. Attach the alternator to the lower pivot, 1, and the upper support strap, 2. 2. Reattach the wires to the alternator terminals. 3. Pivot the alternator to tighten the belt to obtain proper belt tension.

  • Page 566: Starter

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Op. 55 201 STARTER STARTER MOTOR TROUBLESHOOTING Starter Motor Specifications Rated voltage 12 volts Output 2 kw Motor type Four-pole series wound motor Engaging system Magnetic shift Rotation Clockwise (viewed from pinion side)
  • Page 567 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM STARTER MOTOR TROUBLESHOOTING Use the diagnostic charts as a guide when repairing 3. Briefly touch the jumper wire to the spade the starting system. Before diagnosis, be certain the terminal on the solenoid.

  • Page 568: Starter Motor Removal

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM STARTER MOTOR Op. 55 201 50 REMOVAL 1. The starter can be accessed through the right engine side shield with the boom up or down or from the operator’s area with the seat raised.
  • Page 569 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Starter Motor Description Drive Gear Housing Field Coil Armature Brush Spring Brush Plunger Electric Solenoid Overrunning Clutch 10 Pinion 11 Idler Gear The starter assembly is a positive pinion shift, reduction type starter consisting of the motor, reduction gearset, overrunning clutch and electric solenoid.
  • Page 570 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Starter Construction The reduction type starter consists of the armature, housing, electric solenoid, drive pinion assembly and reduction gears. In a conventional type starter the armature and pinion rotate at the same speed on a common shaft.
  • Page 571 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Starter Operation Circuit diagram of reduction type starter. Drive Pinion Idler Gear Field Coil Armature Brush Commutator Ball Bearing Plunger Main Contacts SM463-190 10 Battery 11 Starter Switch 12 Clutch Gear...
  • Page 572 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Electric Solenoid Operation The electric solenoid consists of the pull-in coil, 1, hold-in coil, 2, main contacts, 3, plunger, 4 and return spring, 5. The mechanism is sealed against entry of dirt and moisture.
  • Page 573 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM STARTER DISASSEMBLY 1. Disconnect the lead wire from the electric solenoid. SM463-193 2. Scribe a line between the drive housing and motor to aid in proper reassembly. Remove the bolts securing the motor to the drive housing. The motor is now free to be separated from the drive housing.
  • Page 574 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 3. Extract the insulated brushes, 1, from the brush holders. Hold the springs away and remove the brushes. Slide the brush plate, 2, from the commutator, 3. SM463-196 4. Remove the armature, 1, from the motor housing, 2.
  • Page 575 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 6. Remove the drive end frame, 1, from the solenoid, 2. The idler gear with bearings, 3, and the pinion gear, 4, will be free to fall out. Work over a clean bench, using care to avoid losing these pieces.
  • Page 576 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 9. Remove the idler gear and small pinion from the drive end frame if they were not dislodged when the housing was separated. SM463-202 10. Remove the idler gear bearing rollers and retainer.
  • Page 577 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM INSPECTION AND REPAIR Inspect following components, using conventional test methods, and repair or replace as necessary. Armature Inspect the armature for internal short circuits with a growler. Replace the armature if a short circuit is indicated.
  • Page 578 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Check the spline teeth for wear or damage, and replace the armature as necessary. Check the bearings for signs of roughness or dryness. Lubricate or replace as necessary. SM463-208 55-153...
  • Page 579 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Field Coil Inspect the field coil for an open circuit with a continuity tester. Replace the motor housing if there is no continuity between the two brushes. Inspect the field coils for short to ground with a continuity tester.
  • Page 580 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Brushes Clean brushes and adjacent parts, removing carbon particles by wiping with a clean cloth. Check each brush for wear. Replace brushes if they are worn to the service limit. The positive brushes are welded to the field windings.
  • Page 581 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Overrunning Clutch While holding the clutch housing, rotate the pinion. The pinion should rotate smoothly in one direction (not necessarily easily), but should not rotate in the opposite direction. If the clutch does not function properly, replace it.
  • Page 582 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Electric Solenoid The following tests should be performed with the motor removed from the starter assembly. Each test should not last more than 3 - 5 seconds to avoid overheating the solenoid.
  • Page 583 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM REASSEMBLY Reassemble the starter in the reverse order of disassembly. Observe the following cautions and procedures. 1. Lubricate the following components with a light coating of White Lithium Grease (Part Number RL 666).
  • Page 584 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 4. Install the overrunning clutch assembly part way into the housing. Mesh the idler gear with the driven gear, then fully install both pieces together. SM463-221 5. Position the pinion gear, 1,over the armature hole shaft then install the drive end frame, 2.
  • Page 585 Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM 7. Install the brush plate onto the motor housing. Install the insulated brushes into the holder. Ensure the insulated brush leads are not grounded. Avoid getting oil or grease on the brushes or commutator.

  • Page 586: Starter Reinstallation

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Performance Test After reassembly, a no-load test should be conducted. Clamp the starter securely in a vise. Connect a heavy wire (jumper cable) from a 12 volt battery positive terminal, through a suitable ammeter, to the battery cable post of the starter, 1.

  • Page 587: Miscellaneous Engine Components

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM MISCELLANEOUS ENGINE COMPONENTS GLOW PLUG Sheathed type glow plugs are used to improve cold engine starting. The glow plugs draw 6.9 amps at 10.5 volts. 1. Heat wire 2. Sheath 3. Insulation 4.

  • Page 588: Oil Pressure Switch

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM Short Circuit Glow plugs seldom short-circuit internally. If, however, the glow plug should short, the external wiring will be damaged at start-up. Remove the wiring connector and check the continuity of the glow plug terminal to body ground.

  • Page 589: Labor Guide

    Copyright © New Holland SECTION 55 - ELECTRICAL SYSTEM LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time it actually takes to complete each job. Job Description Hours Air filter sensor, remove and replace...
  • Page 590 Copyright © New Holland SECTION 82 – FRONT LOADER (Boom And Mounting Plate) Chapter 1 – Buckets CONTENTS Section Description Page 82 100 General Information ............

  • Page 591: General Information

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 Bucket Capacity Cubic Feet GENERAL INFORMATION Bucket Bucket Capacity Capacity Capacity Capacity BUCKETS Heaped Heaped Struck Struck Bucket Types Width (cu ft) (cu ft) 1 - LP - Low profile 54″...

  • Page 592: Boom Lock Pins And Linkage

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 77 BOOM LOCK PINS AND LINKAGE The operator can engage the boom lock pins from the operator’s seat. The control is located to the right rear of the operator’s seat at 1.

  • Page 593: Attachment Mounting Plate

    The #9841460 attachment mounting plate now incor- porates slots at two locations, 1, so that additional non-New Holland attachments can be fitted if they re- quire dimensions as shown. A - 333 mm (13-1/8″) B - 313 mm (12-5/16″) C - 279 mm (11″)

  • Page 594: Boom And Cylinder Pivot Pins

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BOOM AND CYLINDER PIVOT PINS When the boom, upper and lower boom links and cyl- inders are removed, the following figures and charts may be use for proper pin placement. The following charts and figures list the pivot pin, part number, loca- tion, and size for identification and locations.
  • Page 595 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BOOM/CYLINDER PIVOT PINS SIZE PART NUMBER 9614349 95 mm (3-3/4I) 38 mm (1-1/2I) 86501430 72.3 mm (2-7/8I) 38.1 mm (1-1/2I) 112.5 mm (4-7/16I) 86501434 57.8 mm (2-9/32I) 38.1 mm (1-1/2I)

  • Page 596: Pallet Fork

    SAE Rating 2108 mm (83″) 408 kg (900 lbs.) Capacities listed are LS140/LS150 with 10 x 16.5 tires at 3.5 bar (50 PSI), full fluids, 79 kg (175 lbs) op- erator, 48″ pallet forks w/back guard, weight kit two 27 kg (60 lbs) per side, per SAE rating specification J1197.

  • Page 597: Utility Fork

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 20 UTILITY FORK The utility fork is for handling matted, stringy material which is difficult to load into a standard bucket. The standard tine spacing, center to center, is 21.8 cm (8-1/2″).
  • Page 598 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BUCKETS Op. 82 100 12 CUTTING EDGE (REPLACEMENT) Cut or grind the old cutting edge from the bucket floor and sides. Remove all old weld and foreign material from the welding area.

  • Page 599: Bucket Latch Plate Installation Procedure

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 BUCKET LATCH PLATE INSTALLATION PROCEDURE 1. Remove the bucket from the loader before weld- ing to prevent damage to the loader electrical system. Material to be welded is low carbon, grade 50 steel;...
  • Page 600 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 6. Position the first plates against the back of the bucket at 1, and rest on the quick-attach plate, 2. Locate the center of the latch plate notches, 4, and center the outer half of the notch over the latch pin, 3.
  • Page 601 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 10. Weld the plates to the bucket at 2; also weld the two plates at 3. 11. Reinstall the bucket quick-attach plate to the loader boom with the pins previously removed.

  • Page 602: Dirt Tooth Kit Installation

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 DIRT TOOTH KIT INSTALLATION Bucket Dirt Tooth Kit The dirt tooth kit consists of six teeth that are welded to the bucket cutting edge as indicated below. The...

  • Page 603: Bucket Tooth Spacing

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 2. Locate the teeth on the bucket edge as indicated. BUCKET TOOTH SPACING Bucket Width From End 2nd Tooth 3rd Tooth 4th Tooth 5th Tooth 6th Tooth 52″...
  • Page 604 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 3. Weld is high carbon steel (tooth) to high carbon steel (bucket). Use welding rods marked 7018 or comparable rods. Weld on both sides of the tooth from the back of the tooth towards the replace- able point.

  • Page 605: Boom Lock Pin/Linkage

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BOOM LOCK PIN/LINKAGE Op. 82 100 77 REMOVAL 1. Lower the boom to the lowered position. 2. Open the rear door, 1, and the top engine access cover, 2.
  • Page 606 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 9. Remove the control rod, 2, from the lever, 5, by removing push nuts, 3. Slide the handle from the rear of the cab. 10. Slide the boom pins, 1, right and left, from the loader ROPS post.
  • Page 607 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 6. Install the control rod, 1, in the handle assembly, positioning the wire harness, 2, to the seat front side of the control rod. 7. Install the control rod, 1, in the handle assembly and the left boom lock pin, 2.

  • Page 608: Boom, Upper And Lower Link

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BOOM, UPPER AND LOWER LINK REMOVAL 1. Remove any attachment (bucket, etc.) from the boom mounting plate and lower the boom to the lowered position. 2. Attach a chain or strap suitable for handling the weight of the boom (approximately 800 lbs.)
  • Page 609 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 52 Lower Link Removal 1. The boom lower link, 1, and boom cylinder pivot pin, 2, hardware is accessed from inside the op- erator’s cab.
  • Page 610 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 6. Loosen the front lower link pivot pin retaining hardware, 1, and strike the link at 2, to break the tapered pivot pin loose in the ROPS frame.
  • Page 611 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 3. Loosen the front link pivot hardware, 1, and with a soft-faced sledge hammer, strike the link at 2, to loosen the tapered pin in the ROPS post.
  • Page 612 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 4. Remove the hoses from the rear hose support, 1, remove the tube clamps, 2, and disconnect the tubes at the Z-bracket and quick couplers at 3.
  • Page 613 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 8. Remove the pin retaining hardware and pin from the link and main boom. Lower the link down and rest it on the loader frame. 9. Loosen the right and left upper link rear retaining bolts, 1;...

  • Page 614: Front Boom Mounting Plate Pivot Hub Replacement

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 70 FRONT BOOM MOUNTING PLATE PIVOT HUB REPLACEMENT 1. Remove any attachment, bucket, etc., from the boom mounting plate. 2. Pivot the mounting plate out flat and remove all hydraulic pressure from the bucket circuit.
  • Page 615 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 7. Using a cutting torch, cut the weld around the hub to separate the hub from the main boom. DO NOT cut any material from the main boom. Grind to remove any remaining weld and hub from the boom.

  • Page 616: Boom, Upper And Lower Link Reinstallation

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) BOOM, UPPER AND LOWER LINK REINSTALLATION 1. If the upper and lower boom links and boom cylin- ders were removed, attach the upper and lower links to the ROPS before installing the main boom assembly.
  • Page 617 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 6. Attach the lower link rear with tapered pivot pins and retaining hardware. Tighten the hardware, making sure the pin is straight in the main boom. 7. With the main boom, upper, and lower links at- tached, the pivot pins and hardware must be properly seated.
  • Page 618 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 12. Route the tubes and hoses to the rear of the boom through the rear hose supports, 1, and on the top side of the lower link at 2, as shown.
  • Page 619 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 17. Check the hoses through the rear supports, 1. When the boom is fully raised, position the hoses in the support as shown and remove any slack from the boom tubes towards boom clamp, 2.
  • Page 620 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 20. Reinstall the boom mounting plate if removed. Torque the pivot bolts, 1, to 108 N⋅m (80 ft. lbs.). The tapered pivot pins and retaining hardware must be hammer seated by striking the head of the bolt and pin and retorquing the bolt.

  • Page 621: Attachment Mounting Plate

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) ATTACHMENT MOUNTING PLATE Op. 82 100 70 REMOVAL 1. Remove any attachment from the loader mount- ing plate. 2. Lower the boom to the lowered position. 3. Tilt the mounting plate forward until the face is level with the ground.
  • Page 622 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 4. Moving the latch handle, 1, align the groove pin, 2, in the setscrew hole, 3. Drive out the groove pin with a hammer and punch. 5. Remove the latch pin, 4, from the bottom of the mounting plate.
  • Page 623 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) PARTS INSPECTION Mounting Plate Assembly 1. Inspect the plate for straightness; if the mounting plate pods are not straight with each other it may be difficult to hook up to attachments. Refer to Section 8 for more details on the procedure for checking the mounting plate.
  • Page 624 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Op. 82 100 74 Latch Lever and Spring Repair/Rebuild 1. Clamp the lower spring guide, 1, in a vise. Turn the step bolt, 2, to remove the lower spring guide, 1, from the step bolt, and remove the spring, 3.
  • Page 625 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 3. Insert the latch pin, 1, with the tapered side to- wards the loader boom, away from the attach- ment. 4. With a hammer and punch, drive the grooved pin through the lower spring guide and latch pin at 2.
  • Page 626 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Attachment Plate Over-Center Latch Pins Wear/ Bend The loader attachment may become loose at the mounting plate. Inspection of the over-center latch pins part #9822358, shows the pin ends worn and bent, 1.

  • Page 627: Checking Procedure For Buckets And Attachments

    Inspection The LS140 and LS150 skid steer latching system re- quires that the faceplate wedge into the attachment. The faceplate must contact the attachment at 1, 2, and 3, and must have clearance between the attach- ment and faceplate at 4, when the attachment is latched properly.
  • Page 628 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) Loader faceplate, 5, and attachment, 6, engage- ment. 3. Check the saddle area of the attachment at 1, for interference, weld, debris, etc. to prevent the at- taching plate and attachment from seating prop- erly.

  • Page 629: Checking Procedure

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) CHECKING PROCEDURE The following are the procedures used to measure the skid-steer loader faceplate and how to measure the attachment. Checking the Attachment 1. Check the placement of the lower latch plates at 1.

  • Page 630: Checking The Loader Faceplate

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) CHECKING THE LOADER FACEPLATE 1. Check the height of the loader faceplate from the top of the plate at 1, to the bottom of the plate at 2: 396.9 mm ±...
  • Page 631 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 3. Check the center dimension between the face- plate pods and the overall outside dimension. 441.3 mm ± 0.8 mm Inside Dimension 1: (17-3/8″ ± 1/32″ ) Outside Dimension 2: 1122.4 mm (44-3/16″)

  • Page 632: Labor Guide

    Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time the job actually takes to complete each job.
  • Page 633 Copyright © New Holland SECTION 82 - FRONT LOADER (BOOM AND MOUNTING PLATE) 82-44...
  • Page 634 Copyright © New Holland SECTION 88 – ACCESSORIES Chapter 1 – Dealer Installed Options CONTENTS Section Description Page 88 100 General Information ............

  • Page 635: General Information

    This includes any terminals of the ignition switch, fuse panel, or ground terminal. 3. NEVER INSTALL an electrical device, music ra- dio, two-way radio, or unapproved New Holland attachment into the cab area. 4. ONLY USE the 12-volt accessory power outlet for attachments requiring less than 10 amps.
  • Page 636 Copyright © New Holland SECTION 88 - ACCESSORIES Wire connections available if electrical attachments were not previously installed. Engine Fuse Panel Ref. Color Destination Fuse Battery Voltage Status To turn signal relay 10-amp All times Available R/GY To accessory relay...
  • Page 637 Figure 4 shows circuits for intermittent high current loads up to 15 amps. Figure 5 shows the circuit for intermittent high current loads up to 30 amps. New Holland sealed circuit breakers that can be pur- chased from parts. Part Number Capacity...

  • Page 638: Hydraulic System Compatibility

    @3200 RPM system backpressure. NOTE: LS140 and LS150 model skid steers must have a minimum of 22.7 l/min (6 GPM) returning NOTE: When using the High-Flow system, 3/4I through the main hydraulic system at all times to quick couplers must be used or high system back- charge the hydrostatic system.
  • Page 639 Copyright © New Holland SECTION 88 - ACCESSORIES 7. Does the attachment require a circuit relief in the bucket circuit? If “NO”, nothing is required. If “YES”, install a bucket circuit relief valve on front of the control valve in the bucket circuit.

  • Page 640: Arm Pads For Cab Side Panels

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 90 000 ARM PADS FOR CAB SIDE PANELS The cab arm pads provide additional operator com- fort and may be used separately or in combination with the seat armrest. The arm pads, 1, require gluing in place to the cab ...

  • Page 641: Armrests For Deluxe Seat

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 90 000 ARMRESTS FOR DELUXE SEAT Right and left side armrests can be installed to the back of the deluxe seat only, for operator comfort. NOTE: The standard seat mounting holes are not provided to attach the armrests.

  • Page 642: Forearm Rests

    The LS140 and LS150 armrests mount with the bracket, 1, hanging toward the inside of the cab. Pivot the armrest up and down, and adjust the two clamp bolts, 2, if binding occurs, or to retain the armrest in the raised position.

  • Page 643: Back-Up Alarm

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 55 000 BACK-UP ALARM The back-up alarm serves as an audible warning de- vice to alert bystanders and other machine operators of machine movements. The alarm will only sound when both hydrostatic control levers are stroked into reverse.

  • Page 644: Block Heater (Engine)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 10 300 BLOCK HEATER (ENGINE) The engine block heater, 1, may be required in colder climate areas to assist in starting of the diesel engine. The block heater is a 115-volt, 400-watt immersion type.

  • Page 645: Electric Power Supply (12 Volt, 15 Amp)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 55 000 ELECTRIC POWER SUPPLY (12 VOLT, 15 AMP) The electric power outlet can be installed on the load- er to provide an auxiliary 12-volt power outlet rated at 15 amp.

  • Page 646: Exhaust (Engine)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 10 254 EXHAUST (ENGINE) CATALYTIC MUFFLER The catalytic muffler kit can be installed on diesel en- gines being operated in applications where cleaner exhaust emissions are required. The catalytic muffler, 1, is a direct replacement for the standard muffler without adding other parts.
  • Page 647 Copyright © New Holland SECTION 88 - ACCESSORIES Aspirator or Spark Arrester Muffler Cleaning Clean the muffler every 250 hours of use to insure proper operation and prolong muffler life. 1. To clean the muffler, first move the loader to an area clear of any flammable material.

  • Page 648: Horn

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 55 000 HORN The horn kit provides an operator-controlled device to alert bystanders and other machine operators. The horn button, 1, is located in the top of the left hy- drostatic control lever.

  • Page 649: Shoulder Belt (Seat)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 90 000 SHOULDER BELT (SEAT) The shoulder belt can be installed with the lap seat belt. The shoulder belt is recommended anytime a front cab door is installed. If the shoulder belt becomes completely retracted or the belt becomes locked, the web must move back into the retractor approximately 1/2″...

  • Page 650: Slow-Moving Vehicle (Smv) Sign Kit

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 88 000 SLOW-MOVING VEHICLE (SMV) SIGN KIT The Slow-Moving Vehicle (SMV) kit mounts to the rear door of the skid-steer loader when the loader is operated on roadways. On the louvered rear doors, a bracket, 1, must be installed to hold the SMV sign in place on top of the door.

  • Page 651: Warning Light (Rotary Beacon)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 55 000 WARNING LIGHT (ROTARY BEACON) The beacon light is a visual alerting device for by- standers and other machine operators. The beacon light’s magnetic base mounts the light securely to any part of the roof or frame.
  • Page 652 Copyright © New Holland SECTION 88 - ACCESSORIES Beacon Switch Wiring Beacon Wiring Diagram NOTE: When attaching ground wires, always place the heaviest ground wire next to the ground surface and then stack the remaining ground wires according to size on top of the heaviest wire.
  • Page 653 Copyright © New Holland SECTION 88 - ACCESSORIES Beacon Bulb Replacement Bulb only #69AG13009AA (H1 12V 55W) To replace the bulb, remove the three screws attach- ing the lens to the base and lift the lens from the base. Squeeze the bulb retaining tabs to separate the bulb from the holder.

  • Page 654: Warning Lights (Four-Way Flashers/Turn Signal/Horn)

    Copyright © New Holland SECTION 88 - ACCESSORIES Op. 55 000 WARNING LIGHTS (FOUR-WAY FLASH- ERS/TURN SIGNAL/HORN) The four-way flashing lights on the front and rear of the loader provide a visual alerting device to bystand- ers and other machine operators.
  • Page 655 Copyright © New Holland SECTION 88 - ACCESSORIES Warning Light Switch Wiring 88-22...
  • Page 656 Copyright © New Holland SECTION 88 - ACCESSORIES 19985531 Warning Light (Four-way) Wiring Diagram NOTE: When attaching ground wires, always place the heaviest ground wire next to the ground surface and then stack the remaining ground wires according to size on top of the heaviest wire.
  • Page 657 Copyright © New Holland SECTION 88 - ACCESSORIES Warning Light Bulb Replacement Amber lens with bulb #9841566 Bulb only #529068 Op. 55 404 10 Front Light 1. Remove the bezel, 1, retaining screws and re- move lens from support. 2. Disconnect the wire harness from the bulb hold- 3.

  • Page 658: Labor Guide

    Copyright © New Holland SECTION 88 - ACCESSORIES LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time it actually takes to complete each job. Job Description Hours Arm pads (cab)
  • Page 659 Copyright © New Holland SECTION 88 - ACCESSORIES 88-26...
  • Page 660 Copyright © New Holland SECTION 90 – PLATFORMS, CAB, BODYWORK, AND DECALS Chapter 1 – Cab and Seat CONTENTS Section Description Page General Information ............

  • Page 661: General Information

    Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS GENERAL INFORMATION Op. 90 108 SAFETY DECALS The safety decals located on the skid steer are intended for personal safety of you and those working with you. Keep the decals legible. If they are not, replace as required.
  • Page 662 Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS The seat and seat pan support rod shown in the raised latched position at 1. CAUTION Do not work under a raised seat unless it is securely latched in the raised position.

  • Page 663: Seat Removal

    Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS Op. 90 120 10 SEAT REMOVAL This section will describe how to remove the seat and seat pan support assembly. Op. 90 120 12 SEAT PAN SUPPORT REMOVAL 1.
  • Page 664 Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS 8. Remove the seat retaining hardware, 1, to separate the seat and seat track from seat pan support. Remove the wire clamp at 2, if the seat/seat belt wire harness is being replaced.

  • Page 665: Seat, Switch And Pan Reinstallation

    Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS SEAT, SWITCH AND PAN REINSTALLATION 1. Install the switch(es) into the seat pan, making sure the switch is seated into the hole in the seat pan, 1. IMPORTANT: If the switch is not seated properly when the retaining hardware is tightened, the switch flange will be broken.
  • Page 666 Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS 5. To adjust the latches, 1, lower the seat down to the operating position and slide the latches, 1, to obtain full engagement of latches and latch rod.

  • Page 667: Safety Decals

    Keep the decals legible. If they are not, obtain intended for the personal safety of you and those replacements from your New Holland dealer. The working with you. Please take this manual, walk decal part numbers are listed with each decal.
  • Page 668 NEVER TRANSPORT A LOADED BUCKET AT FULL HEIGHT. OPERATE THE SKID STEER WITH THE LOAD AS LOW AS POSSIBLE. PART #86521714 LS140 - 1250 LBS (570 KG) (MFG. RATING) PART #86521715 LS150 - 1350 LBS (600 KG) (MFG. RATING) 5. WARNING: NEVER OPERATE THE SKID STEER WITHOUT THE SEAT BELT SECURELY FASTENED.
  • Page 669 STEER IS OPERATIONAL. PART #86509972 9. CAUTION: DO NOT SPRAY ETHER INTO AIR INTAKE. EXPLOSION AND INJURY COULD RESULT. PART #786286 10. DANGER: USE ONLY NEW HOLLAND CAB JACK TILT CAB. READ INSTRUCTIONS BEFORE TILTING CAB. DO NOT REMOVE CAB HARDWARE BEFORE JACK IS INSTALLED.

  • Page 670: Labor Guide

    Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS LABOR GUIDE The following labor amounts are listed as a guide only. Working conditions and experience will vary the time the job actually takes to complete each job.
  • Page 671 Copyright © New Holland SECTION 90 - PLATFORMS, CAB, BODYWORK, AND DECALS 90-12...

This manual is also suitable for:

Ls150

Table of Contents

Save PDF