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WB146

-5 

 
BACKHOE LOADER 

 
 

 
 

SERIAL NUMBERS  

WB146-5  A23001 

and up 

 

ENGINE  

 

4D102LE-2

 

 
 

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. 
 
 

               

Copyright 2010 Komatsu 
Printed in U.S.A. 
Komatsu America Corp. 

March 2010 

Summary of Contents for A23001

Page 1: ...o 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 produ...

Page 2: ...WB146 5 12 CONTENTS 00 01 GENERAL 01 1 10 STRUCTURE FUNCTION AND MAINTENANCE STANDARD 10 1 20 TESTING ADJUSTING AND TROUBLESHOOTING 20 1 30 DISASSEMBLY AND ASSEMBLY 30 1 90 OTHERS 90 1 Find manuals a...

Page 3: ...d 01 7 d 01 8 d 01 9 d 01 10 d 01 11 d 01 12 d 10 1 d 10 2 d 10 3 d 10 4 d 10 5 d 10 6 d 10 7 d 10 8 d 10 9 d 10 10 d 10 11 d 10 12 d 10 13 d 10 14 d 10 15 d 10 16 d Mark Page Rev 10 17 d 10 18 d 10 1...

Page 4: ...20 34 d 20 35 d 20 36 d 20 37 d 20 38 d 20 39 d 20 40 d 20 41 d 20 42 d 20 43 d Mark Page Rev 20 44 d 20 45 d 20 46 d 20 47 d 20 48 d 20 49 d 20 50 d 20 51 d 20 52 d 20 53 d 20 54 d 20 55 d 20 56 d 20...

Page 5: ...9 d 30 100 d 30 101 d 30 102 d 30 103 d 30 104 d Mark Page Rev 30 105 d 30 106 d 30 107 d 30 108 d 30 109 d 30 110 d 30 111 d 30 112 d 30 113 d 30 114 d 30 115 d 30 116 d 30 117 d 30 118 d 30 119 d 30...

Page 6: ...0 228 d 30 229 d 30 230 d 30 231 d 30 232 d 30 233 d 30 234 d 30 235 d 30 236 d Mark Page Rev 30 237 d 30 238 d 30 239 d 30 240 d 30 241 d 30 242 d 30 243 d 30 244 d 30 245 d 30 246 d 30 247 d 30 248...

Page 7: ...30 331 d 30 332 d 30 333 d 30 334 d 30 335 d Mark Page Rev 30 336 d 30 337 d 30 338 d 30 339 d 30 340 d 30 341 d 30 342 d 30 343 d 30 344 d 30 345 d 30 346 d 30 347 d 30 348 d 30 349 d 30 350 d 30 35...

Page 8: ...FOREWORD 00 2 6 3 WB146 5 Find manuals at https best manuals com...

Page 9: ...is is not possible insert the safety pin or use blocks to prevent the work equipment from falling In addition be sure to lock all the control levers and hang warning signs on them 3 When disassembling...

Page 10: ...heir original places Replace any damaged part with new parts When installing hoses and wires be sure that they will not be damaged by contact with other parts when the machine is being operated 10 Whe...

Page 11: ...cture but also serves as reference material for troubleshooting In addition this section gives the judgement standards when inspecting disassembled parts STANDARD VALUE TABLE This section explains the...

Page 12: ...h item 3 Additional pages Additional pages are indicated by a hyphen and numbered after the page number File as in the example Example REVISED EDITION MARK 00 When a manual is revised an edition mark...

Page 13: ...two or more ropes the force subjected to each rope will increase with the hanging angles The table below shows the variation of allowable load kg when hoist ing is made with two ropes each of which is...

Page 14: ...ws out prepare an oil receiving container CONNECTION 00 1 Hold the hose adapter 1 or hose 5 and insert it in the mating adapter 3 aligning them with each other Do not hold the rubber cap portion 4 2 A...

Page 15: ...of the hexagonal portion at the male end 2 Hold in the condition in Step 1 and turn the lever 4 to the right clockwise 3 Hold in the condition in Steps 1 and 2 and pull out the whole body 2 to disconn...

Page 16: ...at the male end 2 Hold in the condition in Step 1 and push until the cover 3 contacts surface a of the hexagonal portion at the male end 3 Hold in the condition in Steps 1 and 2 and pull out the whole...

Page 17: ...29 9040 250 g Polyethylene container Used as sealant for machined holes Holtz MH 705 790 126 9120 75 g Tube Used as heat resisting sealant for repairing engine Three bond 1735 179 129 9140 2 g Polyeth...

Page 18: ...ype Used as sealant for flywheel housing intake manifold oil pan thermostat housing etc Three bond 1211 790 129 9090 100 g Tube Used as heat resisting sealant for repairing engines Molybdenum disulphi...

Page 19: ...19 91 25 07 10 17 59 74 43 51 54 57 12 19 98 123 72 28 90 72 14 22 153 190 112 84 140 13 16 24 235 285 173 32 210 20 18 27 320 400 236 02 295 02 20 30 455 565 335 59 416 72 22 32 610 765 449 91 564 23...

Page 20: ...0 6 04 22 27 58 9 98 1 44 4 72 4 05 24 32 107 9 166 7 79 6 123 0 06 30 36 147 1 205 9 108 5 151 9 10 33 41 147 1 245 1 108 5 180 8 12 36 46 196 2 294 2 144 7 217 0 14 42 55 245 2 343 2 180 9 253 1 Thr...

Page 21: ...m Range Target 08 08 14 5 88 8 82 4 33 6 50 7 35 5 42 10 10 17 9 8 12 74 7 22 9 39 11 27 8 31 12 12 19 14 7 19 6 10 84 14 45 17 64 13 01 14 14 22 19 6 24 5 14 45 18 07 22 54 16 62 16 16 24 24 5 34 3 1...

Page 22: ...tc 5 65 0 32 5 23 4 6 37 Charging and signal 15 84 0 45 13 36 7 0 59 Starting Glow plug 40 85 0 80 42 73 11 4 135 Starting 60 127 0 80 63 84 13 6 178 Starting 100 217 0 80 109 1 17 6 230 Starting Prio...

Page 23: ...the table so divide by 10 move the decimal one place to the left to convert it to 55 mm B Carry out the same procedure as above to convert 55 mm to 2 165 inches C The original value 550 mm was divided...

Page 24: ...3 307 3 346 3 386 3 425 3 465 3 504 90 3 543 3 583 3 622 3 661 3 701 3 740 3 780 3 819 3 858 3 898 Kilogram to Pound 1 kg 2 2046 lb 0 1 2 3 4 5 6 7 8 9 0 0 2 20 4 41 6 61 8 82 11 02 13 23 15 43 17 64...

Page 25: ...662 21 926 22 190 22 455 22 719 22 983 23 247 23 511 90 23 775 24 040 24 304 24 568 24 832 25 096 25 361 25 625 25 889 26 153 Liter to U K Gallon 1 L 0 21997 U K Gal 0 1 2 3 4 5 6 7 8 9 0 0 0 220 0 44...

Page 26: ...3 607 6 614 8 622 0 629 3 636 5 643 7 90 651 0 658 2 665 4 672 7 679 9 687 1 694 4 701 6 708 8 716 1 100 723 3 730 5 737 8 745 0 752 2 759 5 766 7 773 9 781 2 788 4 110 795 6 802 9 810 1 817 3 824 6...

Page 27: ...294 1309 1323 1337 1351 1365 1380 1394 1408 100 1422 1437 1451 1465 1479 1493 1508 1522 1536 1550 110 1565 1579 1593 1607 1621 1636 1650 1664 1678 1693 120 1707 1721 1735 1749 1764 1778 1792 1806 1821...

Page 28: ...6 2 12 2 54 129 2 31 7 89 192 2 26 1 15 5 0 6 7 20 68 0 12 8 55 131 0 32 2 90 194 0 25 6 14 6 8 6 1 21 69 8 13 3 56 132 8 32 8 91 195 8 25 0 13 8 6 5 6 22 71 6 13 9 57 134 6 33 3 92 197 6 24 4 12 10 4...

Page 29: ...01 5 MACHINE SYSTEMS SPECIFICATIONS 01 6 ENGINE 01 6 ELECTRICAL SYSTEM 01 6 SERVICE REFILL CAPACITIES 01 6 TRANSMISSION 01 7 TOTAL MASS 01 7 LOADER 01 7 BACKHOE 01 7 WEIGHT TABLE 01 8 FUEL COOLANT AN...

Page 30: ...ndable arm 2828mm 9 3 3877mm 12 9 F Dumping angle 45 R Maximum reach from swing center 5742mm 18 10 G Rollback angle 45 with extendable arm 6755mm 22 2 H Digging depth 138mm 5 4 S Maximum digging dept...

Page 31: ...GENERAL SPECIFICATION DRAWING WB146 5 01 3 3 BACKHOE ARM WITH STANDARD ARM...

Page 32: ...GENERAL SPECIFICATION DRAWING 01 4 3 WB146 5 WITH EXTENDABLE ARM RETRACTED...

Page 33: ...GENERAL SPECIFICATION DRAWING WB146 5 01 5 3 WITH EXTENDABLE ARM EXTENDED...

Page 34: ...ndition indicator Lubrication system Method Gear pump force lubrication Filter Full flow Cooling system Radiator water cooled system Starting system Electric motor with air pre heating system for cold...

Page 35: ...easing points has been dramatically reduced Standard bucket width 2 356 mm 7ft 9in Front bucket capacity SAE 0 95 m3 1 25 yd3 Standard bucket weight 454 kg 1 000 lb Lifting capacity at maximum height...

Page 36: ...el complete with rim 52 kg 115 lbs Rear wheel complete with rim 133 3 kg 294 lbs Front End Loader Assembly 1 763 kg 3 887 lbs Boom Cylinder 46 kg 101 lbs x 2 Bucket Tilt Cylinder 35 kg 77 lbs x 2 Fulc...

Page 37: ...raulic system SAE 5W 150 liter 39 6 US gal 92 liter 24 3 US gal SAE 10W SAE 30 SAE 10W 30 Hydraulic system with biodegrad able oil 150 liter 39 6 US gal 92 liter 24 3 US gal See page 3 12 Front axle D...

Page 38: ...10 C 18 F more or less in the day time Use API classification CD as engine oil and if API classification CC reduce the engine oil change interval to half There is no problem if single grade oil is mi...

Page 39: ...IO 46 VAVOLINE UNISYN HLP 32 68 WARNING It Is not possible to mix the synthetic biodegradable oil type HEES with ordinary hydraulic oils since when the temperature increases insoluble compounds are ge...

Page 40: ...GENERAL LUBRICATION DIAGRAMS 01 12 3 WB146 5 12 LUBRICATION DIAGRAMS GENERAL VIEW Remark Use only recommended oil and grease...

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