Komatsu WB142-5 Shop Manual
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Komatsu WB142-5 Shop Manual

Komatsu WB142-5 Shop Manual

Backhoe loader
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SHOP
MANUAL
WB142-5
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
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
recommended that customers contact their distributor for information on the latest revision.
June 2010
Printed in USA
WB142-5
4D102LE-2
A13001
and UP
Copyright 2010 Komatsu
DataKom Publishing Division
CEBM018903
00-1
d

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Summary of Contents for Komatsu WB142-5

  • 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 add improvements at any time without incurring any obligation to install such changes on products sold previously.

  • Page 2: Table Of Contents

    OTHER ..............90-1 00-2 WB142-5 Find manuals at https://best-manuals.com...
  • Page 3 10-10 10-39 20-5 00-17 ● 10-11 10-40 20-6 00-18 ● 10-12 10-41 20-7 00-19 ● 10-13 10-42 20-8 00-20 ● 10-14 10-43 20-9 00-21 ● 10-15 10-44 20-10 00-22 ● 10-16 10-45 00-23 WB142-5 00-2-1 WB142-5 Find manuals at https://best-manuals.com...
  • Page 4 ● 30-29 50-31-2 50-64 ● ● ● ● 30-30 50-1 50-32 50-65 ● ● ● 50-2 50-33 50-66 ● ● ● ● 40-1 50-3 50-34 50-67 ● ● ● ● 40-2 50-4 50-35 50-68 00-2-2 WB142-5 Find manuals at https://best-manuals.com...

  • Page 5: Foreword

    50-163 50-196 ● ● ● ● 50-98 50-131 50-164 50-197 ● ● ● ● 50-99 50-132 50-165 50-198 ● ● ● ● 50-100 50-133 50-166 50-199 ● ● ● ● 50-101 50-134 50-167 50-200 WB142-5 00-2-3 Find manuals at https://best-manuals.com...
  • Page 6 ● ● 50-229 50-262 50-295 90-5 ● ● ● 50-230 50-263 50-296 90-6 ● ● ● 50-231 50-264 50-297 90-7 ● ● ● 50-232 50-265 50-298 90-8 ● ● ● 50-233 50-266 50-299 90-9 00-2-4 WB142-5 Find manuals at https://best-manuals.com...
  • Page 7 FOREWORD Mark Page Mark Page Mark Page Mark Page 90-10 90-11 90-12 90-13 90-14 90-15 90-16 90-17 90-18 WB142-5 00-2-5 Find manuals at https://best-manuals.com...
  • Page 8 FOREWORD Mark Page Mark Page Mark Page Mark Page 00-2-6 WB142-5 Find manuals at https://best-manuals.com...
  • Page 9 Always keep the tools and parts in work on the oil or coolant systems. their correct places. Always keep the work area clean WB142-5 00-3 d Find manuals at https://best-manuals.com...
  • Page 10 16. Never use a welder or machine with a higher voltage to jump-start or supply voltage to a machine with a lower voltage system. Damage to the machine’s electrical system, a fire or an explosion may result. Always stay within the same voltage range as the machine. 00-4 WB142-5 Find manuals at https://best-manuals.com...

  • Page 11: General

    OTHER 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. WB142-5 00-5...
  • Page 12 (-) and numbered after the page number. File as 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 (b, c, d, etc.) is recorded on the bottom outside corner of the pages. 00-6 d WB142-5...
  • 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 00-7 d WB142-5...
  • Page 14 The range (A – B) from the difference (A) between the minimum size of the shaft and the maximum size of the hole to the difference (B) between the maximum size of the shaft and the minimum size of the hole is the "standard inter- ference." 00-8 WB142-5...
  • Page 15 The allowable maximum interference between the hole of a part and the shaft of another part to be assembled is called the "interference limit." • The interference limit shows the repair limit of the part of smaller tolerance. • If the interference between the parts exceeds the interference limit, they must be replaced or repaired. WB142-5 00-9...
  • Page 16 Used as sealant for flange surfaces and bolts Gasket seal- at high temperature locations; used to LG-3 790-129-9070 1 kg prevent seizure. ● Used as sealant for heat resistant gasket for high temperature locations such as engine pre-combustion chamber, exhaust pipe. 00-10 WB142-5...
  • Page 17 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) WB142-5 00-11...
  • Page 18 2210 ±240 1630.0 ±177.0 2750 ±290 2028.3 ±213.9 3280 ±340 2419.2 ±250.8 Thread diameter of bolt Width across flats N·m lbf ft 7.85 ±1.95 5.75 ±1.4 18.6 ±4.9 13.7 ±3.6 40.2 ±5.9 29.6 ±4.4 82.35 ±7.85 60.7 ±5.8 00-12 WB142-5...
  • Page 19 Width across flats Tightening torque N·m lbf ft 24.5 ±4.9 18.0 ±3.6 49 ±19.6 36.1 ±14.5 78.5 ±19.6 57.9 ±14.5 137.3 ±29.4 101.3 ±21.7 176.5 ±29.4 130.2 ±21.7 196.1 ±49 144.6 ±36.1 245.2 ±49 180.9 ±36.1 294.2 ±49 217.0 ±36.1 WB142-5 00-13...
  • Page 20 177 - 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} 00-14 WB142-5...

  • Page 21: Other

    — White & Red & Yellow & Green & Blue & Color — — Green Green Blue Black Black Code — — — — Yellow & Green & Color — — — Red & Blue — White Blue WB142-5 00-15...
  • Page 22 (Fig. 5). • When the hose is pulled back, the rubber cap por- tion moves toward the hose about 3.5 mm (0.14 in). This does not indicate an abnormality, however. 00-16 WB142-5...
  • Page 23 (7) to disconnect it (Fig. 8). Connection • Hold the tightening portion and push body (7) straight until sliding prevention ring (6) contacts contact surface (a) of the hexagonal portion at the male end (Fig. 9). WB142-5 00-17...
  • Page 24 C. While holding the condition of Steps A and B, pull out whole body (9) to disconnect it (Fig. 12). Connection • Hold the tightening portion and push body (9) straight until the sliding prevention ring contacts surface (b) of the hexagonal portion at the male end (Fig. 13). 00-18 WB142-5...
  • Page 25 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 WB142-5 00-19...
  • Page 26 136.69 138.89 141.10 143.30 145.51 147.71 149.91 152.12 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26 00-20 WB142-5...
  • Page 27 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 WB142-5 00-21...
  • Page 28 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 00-22 WB142-5...
  • Page 29 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 WB142-5 00-23...
  • Page 30 167.0 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 00-24 WB142-5...
  • Page 31 GENERAL VIEW ............01-10 WB142-5...

  • Page 32: General

    Bucket reach (transport) 1900mm (6’3”) Rear tread 1680mm (5’6”) Ground clearance 380mm (1’3”) Front tread 1780mm (5’10”) Wheel base 2175mm (7’2”) Overall width (with bucket) 2180mm (7’2”) Backhoe swing center distance 1175mm (3’10”) Backhoe transport height 3660mm (12’0”) 01-2 WB142-5...

  • Page 33: Backhoe Arm

    GENERAL SPECIFICATION DRAWING BACKHOE ARM WB142-5 01-3...

  • Page 34: Machine Systems Specifications

    • Horsepower rating @ 2200 rpm (WB142-5) Gross horsepower ................60 kW 80 HP Net horsepower (SAE J 1349).

  • Page 35: Transmission

    Rear tire: 16.9 x 24 R4, 12 ply ............2.60 kg/cm (37 psi) WB142-5 01-5...

  • Page 36: Weight Table

    WEIGHT TABLE WEIGHT TABLE ★ This Weight Table is for reference when handling components or when transporting the machine. Unit: kg (lb) Machine model WB142-5 Engine assembly - Muffler and exhaust pipe 400 (882) Radiator 37 (82) Hydraulic oil tank (empty)

  • Page 37: Fuel, Coolant, And Lubricants

    ASTM D975 No. 2 Cooling 14 liter Coolant Ethylene Glycol Base system (3.7 gal) OPTION FOR VERY COLD AREAS: If the temperature exceeds 10° C (50° F), contact your Komatsu distributor for advise on the type of oil to be used. WB142-5 01-7...

  • 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 start moving the equipment, so that all the parts of the system are filled with oil. Stop the engine and check the oil level. WB142-5 01-9...

  • Page 40: Lubrication Diagrams

    GENERAL LUBRICATION DIAGRAMS LUBRICATION DIAGRAMS GENERAL VIEW Remark Use only recommended oil and grease. 01-10 WB142-5...
  • Page 41 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

This manual is also suitable for:

A13001

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