Komatsu WB146-5 Shop Manual
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Komatsu WB146-5 Shop Manual

Backhoe loader
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WB146
BACKHOE LOADER
SERIAL NUMBERS
ENGINE
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in
accordance with written authorization from Komatsu America Corp.
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 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, revisions may be made to this publication. It is
recommended that customers contact their distributor for information on the latest revision.
March 2010
-5
WB146-5 A23001
4D102LE-2
and up
Copyright 2010 Komatsu
Printed in U.S.A.
Komatsu America Corp.
CEBM016503

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  • Page 1 4D102LE-2 ENGINE This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. 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 improvements at any time without incurring any obligation to install such changes on products sold previously.
  • Page 2 OTHERS............. . . 90-1 00-2 D WB146-5 Find manuals at https://best-manuals.com...
  • Page 3 ● ● 10-12 10-41 10-70 00-19 ● ● ● 10-13 10-42 10-71 00-20 ● ● ● 10-14 10-43 10-72 00-21 ● ● ● 10-15 10-44 10-73 00-22 ● ● ● 10-16 10-45 10-74 WB146-5 00-2-1 WB146-5 Find manuals at https://best-manuals.com...
  • Page 4 30-1 30-34 ● ● ● ● 20-7 20-40 30-2 30-35 ● ● ● ● 20-8 20-41 30-3 30-36 ● ● ● ● 20-9 20-42 30-4 30-37 ● ● ● ● 20-10 20-43 30-5 30-38 00-2-2 WB146-5 Find manuals at https://best-manuals.com...
  • Page 5 30-133 30-166 ● ● ● ● 30-68 30-101 30-134 30-167 ● ● ● ● 30-69 30-102 30-135 30-168 ● ● ● ● 30-70 30-103 30-136 30-169 ● ● ● ● 30-71 30-104 30-137 30-170 WB146-5 00-2-3 Find manuals at https://best-manuals.com...
  • Page 6 30-265 30-298 ● ● ● ● 30-200 30-233 30-266 30-299 ● ● ● ● 30-201 30-234 30-267 30-300 ● ● ● ● 30-202 30-235 30-268 30-301 ● ● ● ● 30-203 30-236 30-269 30-302 00-2-4 WB146-5 Find manuals at https://best-manuals.com...
  • Page 7 90-2 ● 30-325 90-3 ● 30-326 90-4 ● 30-327 90-5 ● 90-6 30-328 ● 30-329 90-7 ● 30-330 90-8 ● 30-331 90-9 ● 30-332 90-10 ● 30-333 90-11 ● 30-334 90-12 ● 30-335 90-13 WB146-5 00-2-5 Find manuals at https://best-manuals.com...
  • Page 8 FOREWORD 00-2-6 WB146-5 Find manuals at https://best-manuals.com...
  • Page 9 Decide a place in the repair workshop to keep tools and removed parts. Always keep the tools and parts in their WB146-5 00-3 Find manuals at https://best-manuals.com...
  • Page 10 15. When jump starting the machine, only use a machine of similar size and voltage. Never use a arc welder or other electrical generating equipment to jump start the machine. Carefully review the safety and procedures for jump starting the machine. 00-4 WB146-5 Find manuals at https://best-manuals.com...
  • Page 11 DIAGRAMS AND SCHEMATICS This section has the foldout drawings for the machine. 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. WB146-5 00-5...
  • Page 12 (-) and numbered after the page number. File as drained. in the example. Example: 10-4 10-4-1 Added pages 10-4-2 10-5 REVISED EDITION MARK When a manual is revised, an edition mark (bcd…) is recorded on the bottom outside corner of the pages. 00-6 WB146-5...
  • Page 13 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 WB146-5 00-7...
  • Page 14 After inserting the hose in the mating adapter, pull it back to check its connecting condition. When the hose is pulled back, the rubber cap portion moves toward the hose about 3.5 mm. This does not indicate an abnormality. 00-8 WB146-5...
  • Page 15 Hold in the condition in Steps 1 and 2, and pull out the whole body (2) to disconnect it. CONNECTION Hold the mouthpiece of the tightening portion and push body (2) in straight until sliding prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. WB146-5 00-9...
  • Page 16 (2) to disconnect it. CONNECTION Hold the mouthpiece of the tightening portion and push the body (2) in straight until the slide prevention ring (1) contacts surface a of the hexagonal portion at the male end to connect it. 00-10 WB146-5...
  • Page 17 Used as sealant for flange surfaces and bolts Gasket at high temperature locations; used to sealant LG-3 790-129-9070 1 kg prevent seizure. ● Used as sealant for heat resistant gasket for at high temperature locations such as engine pre-combustion chamber, exhaust pipe. WB146-5 00-11...
  • Page 18 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) 00-12 WB146-5...
  • Page 19 2890 - 3630 2131.55 - 2677.35 Thread diameter of bolt Width across flats lbf ft 5.9 - 9.8 4.35 - 7.22 13.7 - 23.5 10.10 - 17.33 34.3 - 46.1 25.29 - 34.00 74.5 - 90.2 54.94 - 66.52 WB146-5 00-13...
  • Page 20 36.1 ± 14.4 78.5 ± 19.6 57.8 ± 14.4 137.3 ± 29.4 101.2 ± 21.6 176.5 ± 29.4 130.1 ± 21.6 196.1 ± 49 144.6 ± 36.1 245.2 ± 49 180.8 ± 36.1 294.2 ± 49 216.9 ± 36.1 00-14 WB146-5...
  • Page 21 177 - 245 {130.5 - 180.7} 216 {159.3} 1 3/16 - 12UN 30.2 (10) 177 - 245 {130.5 - 180.7} 216 {159.3} (12) 197 - 294 {145.3 - 216.8} 245 {180.7} (14) 246 - 343 {181.4 - 252.9} 294 {216.8} WB146-5 00-15...
  • Page 22 — White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue 00-16 WB146-5...
  • Page 23 2.441 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 WB146-5 00-17...
  • Page 24 136.69 138.89 141.10 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-18 WB146-5...
  • Page 25 13.638 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 WB146-5 00-19...
  • Page 26 1171.7 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 00-20 WB146-5...
  • Page 27 3015 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 WB146-5 00-21...
  • Page 28 167.0 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 00-22 WB146-5...

  • Page 29: Table Of Contents

    GENERAL VIEW ..............01-12 WB146-5...

  • Page 30: General

    1175mm (3’10”) Front tread 1874mm (6’2”) Transport length 7432mm (24’5”) Overall width (with bucket) 2356mm (7’9”) Dumping height (SAE) 3676mm (12’1") Backhoe transport height 3676mm (12’1”) -arm retracted 3658mm (12’0’’) -with extendable arm 3746mm (12’4") -arm extended 4369mm (14’4") 01-2 WB146-5...

  • Page 31: Backhoe Arm

    GENERAL SPECIFICATION DRAWING BACKHOE ARM WITH STANDARD ARM WB146-5 01-3...

  • Page 32: With Extendable Arm (Retracted)

    GENERAL SPECIFICATION DRAWING WITH EXTENDABLE ARM (RETRACTED) 01-4 WB146-5...

  • Page 33: With Extendable Arm (Extended)

    GENERAL SPECIFICATION DRAWING WITH EXTENDABLE ARM (EXTENDED) WB146-5 01-5...

  • Page 34: Machine Systems Specifications

    Pressure ............... . 1.88 ± 5 kg/cm (27±1 psi) 01-6 WB146-5...

  • Page 35: Transmission

    Backhoe bucket capacity ............(SAE) 0.20 m (3 0.24 yd WB146-5...

  • Page 36: Weight Table

    WEIGHT TABLE WEIGHT TABLE ★ This weight table is for reference when handling components or when transporting the machine. Unit: kg (lbs) Machine model WB146-5 Engine assembly - Muffler and exhaust pipe 394 kg (869 lbs) Radiator 37 kg (82 lbs)

  • Page 37: Fuel, Coolant, And Lubricants

    ASTM D975 No. 2 Cooling 14 liter Coolant AF-NAC Supercoolant system (3.7 US gal) OPTION FOR VERY COLD AREAS:If the temperature exceeds 10° C (50° F), contact your Komatsu distributor for advice on the type of oil to be used. WB146-5 01-9...

  • Page 38: Grease

    • Use Komatsu genuine oil which has been specifically formulated and approved for use in the engine, hydraulic work equipment, transmission, axles, and brakes. Specified capacity: Total amount of oil including oil for components and oil in piping.

  • Page 39: Homologated (Hees) Synthetic Lubricants

    Start the engine and let it idle without using the work equipment, wait until the oil reaches a temperature of at least 40 ° C (104 ° F), then operate the work equipment, so that all the parts of the system are filled with oil. • Stop the engine and check the oil level. WB146-5 01-11...

  • Page 40: Lubrication Diagrams

    GENERAL LUBRICATION DIAGRAMS LUBRICATION DIAGRAMS GENERAL VIEW Remark Use only recommended oil and grease. 01-12 WB146-5...
  • Page 41 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

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