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WB140PS-
WB150PS-
BACKHOE LOADER
SERIAL NUMBERS
This material is proprietary to Komatsu Utility Division and is not to be reproduced, used, or disclosed except in accordance
with written authorization from Komatsu Utility Division.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or
add improvements at any time without incurring any obligation to install such changes on products sold previously.
Due to this continuous program of research and development, periodic revisions may be made to this publication. It is recom-
mended that customers contact their distributor for information on the latest revision.
April 2003
WB140PS-2N, WB150PS-2N
WB140PS-2N A40001
WB150PS-2N A70001
CEBM011100
2N
2N
and UP
Copyright 2003 Komatsu
Published in USA
Komatsu America Corp.
00-1
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Summary of Contents for Komatsu WB140PS-2N
- Page 1 UP WB150PS-2N A70001 This material is proprietary to Komatsu Utility Division and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu Utility Division. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or add improvements at any time without incurring any obligation to install such changes on products sold previously.
- Page 2 OTHER ..............90-1 00-2 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 3 Smoke Before starting work, remove the leads from the battery. only in the areas provided for smoking. Never smoke ALWAYS remove the lead from the negative (-) termi- while working. nal first. WB140PS-2N, WB150PS-2N 00-3 Find manuals at https://best-manuals.com...
- Page 4 13. When measuring hydraulic pressure, check that the measuring tool is correctly assembled before taking any measure- ments. 14. Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates suddenly, so never let anyone stand at either end of the track. 00-4 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 5 This section gives the judgement standards when inspecting disassembled parts. NOTICE The specifications contained in this shop manual are subject to change at any time and without any advance notice. Contact your distributor for the latest information. WB140PS-2N, WB150PS-2N 00-5 Find manuals at https://best-manuals.com...
- Page 6 Example: 10-4 10-4-1 Added pages 10-4-2 10-5 REVISED EDITION MARK When a manual is revised, an edition mark (123…) is recorded on the bottom outside corner of the pages. 00-6 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 7 Sling wire ropes from the middle portion of the hook. Slinging near the edge of the hook may cause the rope to slip off the hook during hoisting, and a serious accident WB140PS-2N, WB150PS-2N 00-7 Find manuals at https://best-manuals.com...
- Page 8 Gasket seal- at high temperature locations; used to pre- LG-3 790-129-9070 1 kg vent seizure. Used as sealant for heat resistant gasket for at high temperature locations such as engine pre-combustion chamber, exhaust pipe. 00-8 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 9 Used for normal temperature, light load SYG2-400CA-A G2-CA Various Various bearing at places in contact with water or SYG2-160CA Grease steam. SYG2- 160CNCA 400 g (10 per SYG2-400M Belows type Used for places with heavy load. case) 00-9 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 10 335 ±35 Thread diameter of bolt Width across flats 7.85 ± 1.95 0.8 ± 0.2 18.6 ± 4.9 1.9 ± 0.5 40.2 ± 5.9 4.1 ± 0.6 82.35 ± 7.85 8.4 ± 0.8 00-10 WB140PS-2N, WB150PS-2N Find manuals at https://best-manuals.com...
- Page 11 Width across flat Tightening torque 24.5 ±4.9 2.5 ±0.5 49 ±19.6 5 ±2 78.5 ±19.6 8 ±2 137.3 ±29.4 14 ±3 176.5 ±29.4 18 ±3 196.1 ±49 20 ±5 245.2 ±49 25 ±5 294.2 ±49 30 ±5 00-11 WB140PS-2N, WB150PS-2N...
- Page 12 White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue 00-12 WB140PS-2N, WB150PS-2N...
- Page 13 2.480 2.520 2.559 2.598 2.638 2.677 2.717 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898 00-13 WB140PS-2N, WB150PS-2N...
- Page 14 138.89 141.10 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-14 WB140PS-2N, WB150PS-2N...
- Page 15 13.858 14.078 14.298 14.518 14.738 14.958 15.178 15.398 15.618 15.838 16.058 16.278 16.498 16.718 16.938 17.158 17.378 17.598 17.818 18.037 18.257 18.477 18.697 18.917 19.137 19.357 19.577 19.797 20.017 20.237 20.457 20.677 20.897 21.117 21.337 21.557 21.777 00-15 WB140PS-2N, WB150PS-2N...
- Page 16 1179.0 1186.2 1193.4 1200.7 1207.9 1215.1 1222.4 1129.6 1236.8 1244.1 1251.3 1258.5 1265.8 1273.0 1280.1 1287.5 1294.7 1301.9 1309.2 1316.4 1323.6 1330.9 1338.1 1345.3 1352.63 1359.8 1367.0 1374.3 1381.5 1388.7 1396.0 1403.2 1410.4 1417.7 1424.9 1432.1 1439.4 00-16 WB140PS-2N, WB150PS-2N...
- Page 17 3030 3044 3058 3072 3086 3101 3115 3129 3143 3158 3172 3186 3200 3214 3229 3243 3257 3271 3286 3300 3314 3328 3343 3357 3371 3385 3399 3414 3428 3442 3456 3470 3485 3499 3513 3527 3542 00-17 WB140PS-2N, WB150PS-2N...
- Page 18 65.6 302.0 -14.4 42.8 105.8 24.4 168.8 68.3 311.0 -13.9 44.6 107.6 25.0 170.6 71.1 320.0 -13.3 46.4 109.4 25.6 172.4 73.9 329.0 -12.8 48.2 111.2 26.1 174.2 76.7 338.0 -12.2 50.0 113.0 26.7 176.0 79.4 347.0 00-18 WB140PS-2N, WB150PS-2N...
- Page 19 PARTS BOOK - PAPER: Chassis and Engine (WB140PS-2N) ......BEPB021400 Chassis and Engine (WB150PS-2N) ......BEPB021500 OPERATION AND MAINTENANCE MANUAL: Chassis and Engine .
- Page 20 REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS COMPLETE FORM DataKom Publishing Division AND RETURN TO 440 North Fairway Drive Vernon Hills, IL 60061-8112 U.S.A. Attn: Service Publications Fax No. (847) 970-4186 Tel No. (847) 970-5887 COMPANY NAME PURCHASE ORDER NO. SHIP TO ATTN.
- Page 21 HYDRAULIC CIRCUIT ............10-54 WB140PS-2N, WB150PS-2N...
- Page 22 BUCKET ..............10-100 10-2 WB140PS-2N, WB150PS-2N...
- Page 23 AIR-CONDITIONING UNIT FUNCTION ........10-113 WB140PS-2N, WB150PS-2N...
- Page 24 The driving power is transmitted from the transmission flanges (3) to the front (5) and rear (6) axles through the Cardan drive shafts (7 and 8). The driving power transmitted to the front (5) and rear (6) axles is reduced by the differentials and then transmitted to the planetary gear through the differential shafts. 10-4 WB140PS-2N, WB150PS-2N...
- Page 25 Rear axle Transmission Differential Planetary Total Transmission Differential Planetary Total 1st gear 4.374 2.436 6.000 65.592 5.440 2.846 6.00 92.893 2nd gear 2.436 34.859 3.030 51.740 3rd gear 1.232 17.630 1.532 26.160 4th gear 0.651 9.316 0.810 13.832 WB140PS-2N, WB150PS-2N 10-5...
- Page 26 STRUCTURE AND FUNCTION TRANSMISSION TRANSMISSION DIAGRAM OF THE POWER TRAIN Engine Hydraulic pump Converter Rear flange Transmission Front flange 10-6 WB140PS-2N, WB150PS-2N...
- Page 27 21. Forward gear clutch - pressure 10. 4WD clutch solenoid valve 32. 2nd gear anitshock valve check point 22. Reverse gear clutch - pres- 11. 2nd gear clutch solenoid valve 33. 3rd gear antishock valve sure check point WB140PS-2N, WB150PS-2N 10-7...
- Page 28 From the solenoid valve group ST1 (T Port) 4th gear filling pressure sensor (C11) Control valve group 1st gear filling pressure sensor (C08) Converter 10. Speedometer sensor (C02) Filter 11. 3rd gear filling pressure sensor (C10) Plug 12. 2nd gear filling pressure sensor (C09) 10-8 WB140PS-2N, WB150PS-2N...
- Page 29 STRUCTURE AND FUNCTION TRANSMISSION Hydraulic pump drive shaft Flange Propeller shaft Front output shaft Reverse gears idler shaft 4WD engagement device Drive shaft Flange Rear output shaft WB140PS-2N, WB150PS-2N 10-9...
- Page 30 STRUCTURE AND FUNCTION TRANSMISSION 10-10 WB140PS-2N, WB150PS-2N...
- Page 31 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...