Komatsu Wheel Loader WA350 Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Komatsu Wheel Loader WA350-1, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.
Komatsu Wheel Loader WA350-1 workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
PRODUCT DETAILS:
Total Pages: 613 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
SEAM04230103 - Wheel Loader WA350-1, WA400-1, WA450-1 Operation & Maintenance Manual.pdf
SEBM04230107 - Wheel Loader WA350-1 Shop Manual.pdf
MAIN SECTIONS
MAIN MENU...0
COVER...1
CONTENTS...2
10 ENGINE...17
11 STRUCTURE AND FUNCTION...17
ENGINE MOUNT...18
RADIATOR...19
FUEL TANK AND PIPING...20
ENGINE CONTROL...21
12 TESTING AND ADJUSTING...22
STANDARD VALUE TABLE...23
TOOL LIST FOR TESTING AND ADJUSTING...24
ADJUSTING VALVE CLEARANCE...25
MEASURING COMPRESSION PRESSURE...26
TESTING AND ADJUSTING FUEL INJECTION TIMING...27
MEASURING ENGINE OIL PRESSURE AND TEMPERATURE...29
MEASURING BLOW-BY PRESSURE...30
TESTING AND ADJUSTING FAN BELT TENSION...31
MEASURING EXHAUST GAS COLOR...32
MEASURING ACCELERATOR PEDAL OPERATING FORCE AND OPERATING ANGLE...33
ADJUSTING FUEL CUT SOLENOID...35
13 DISASSEMBLY AND ASSEMBLY...36
STARTING MOTOR ASSEMBLY...37
REMOVAL...37
INSTALLATION...37
ALTERNATOR ASSEMBLY...38
REMOVAL...38
INSTALLATION...38
FUEL INJECTION PUMP ASSEMBLY...39
REMOVAL...39
INSTALLATION...39
WATER PUMP ASSEMBLY...40
REMOVAL...40
INSTALLATION...40
NOZZLE HOLDER ASSEMBLY...41
REMOVAL...41
INSTALLATION...41
CYLINDER HEAD ASSEMBLY...42
REMOVAL...42
INSTALLATION...48
TURBOCHARGER ASSEMBLY...56
REMOVAL...56
INSTALLATION...56
COMPRESSOR ASSEMBLY...57
REMOVAL...57
INSTALLATION...57
RADIATOR ASSEMBLY...58
REMOVAL ...58
INSTALLATION...61
OIL COOLER ASSEMBLY...63
REMOVAL...63
INSTALLATION...63
ENGINE ASSEMBLY...64
REMOVAL...64
INSTALLATION...71
FUEL TANK...78
REMOVAL...78
INSTALLATION...80
20 POWER TRAIN...82
21 STRUCTURE AND FUNCTION...82
GENERAL...83
HYDRAULIC CIRCUIT FOR POWER TRAIN...85
HYDRAULIC CIRCUIT DIAGRAM FOR POWER TRAIN...86
TORQUE CONVERTER AND TRANSMISSION PIPING...87
TORQUE CONVERTER CHARGING PUMP...88
TORQUE CONVERTER...89
TORQUE CONVERTER OIL FILTER...92
TORQUE CONVERTER OIL COOLER...93
TORQUE CONVERTER RELIEF VALVE...94
TRANSMISSION...95
TRANSMISSION CONTROL VALVE...103
UPPER VALVE...105
LOWER VALVE...106
TRANSMISSION SOLENOID VALVE...107
EMERGENCY MANUAL SPOOL...108
PRIORITY VALVE...111
MODULATING VALVE AND QUICK RETURN VALVE...112
ACCUMULATOR VALVE...115
PILOT REDUCING VALVE...117
TRANSMISSION PILOT FILTER...118
TRANSFER...119
DRIVE SHAFT...120
AXLE MOUNT...121
AXLE AND DIFFERENTIAL...123
TORQUE PROPORTIONING DIFFERENTIAL...128
FINAL DRIVE...129
TIRE AND WHEEL...130
22 TESTING AND ADJUSTING...131
STANDARD VALUE TABLE...132
TOOL LIST FOR TESTING AND ADJUSTING...133
MEASURING ENGINE STALL SPEED...134
MEASURING OIL PRESSURE OF TORQUE CONVERTER AND TRANSMISSION...136
MEASURING SHIFT LEVER...138
METHOD FOR OPERATION OF EMERGENCY MANUAL SPOOL...139
TIRE AND WHEEL...141
TROUBLESHOOTING...142
PRECAUTIONS WHEN TROUBLESHOOTING...143
METHOD OF READING TROUBLESHOOTING TABLE...145
PREVENTING RECURRENCE OF TROUBLE...147
METHOD OF LOCATING MAIN PROBLEM POINTS WHEN TROUBLESHOOTING TRANSMISSION SYTEM...148
TROUBLESHOOTING TABLE...149
1. MACHINE DOES NOT MOVE...149
2. MACHINE LACKS POWER OR SPEED...151
3. EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR...152
4. TORQUE CONVERTER OIL TEMPERATURE TOO HIGH...153
23 DISASSEMBLY AND ASSEMBLY...154
TORQUE CONVERTER CHARGING PUMP...155
REMOVAL...155
INSTALLATION...156
TORQUE CONVERTER, TRANSMISSION, TRANSFER ASSEMBLY...157
REMOVAL...157
INSTALLATION...166
TORQUE CONVERTER ASSEMBLY...174
DISASSEMBLY...174
ASSEMBLY...179
TRANSMISSION ASSEMBLY...185
DISASSEMBLY...185
ASSEMBLY...198
TRANSFER ASSEMBLY...213
DISASSEBLY...213
ASSEMBLY...216
TRANSMISSION CONTROL VALVE...223
REMOVAL...223
INSTALLATION...224
LOWER VALVE...225
DISASSEMBLY...225
ASSEMBLY...225
UPPER VALVE...227
DISASSEMBLY...227
ASSEMBLY...227
FRONT DIFFERENTIAL...229
REMOVAL...229
INSTALLATION...232
REAR DIFFERENTIAL...235
REMOVAL...235
INSTALLATION...236
DIFFERENTIAL...237
DISASSEMBLY...237
ASSEMBLY...240
FRONT AXLE...248
REMOVAL...248
INSTALLATION...250
REAR AXLE...252
REMOVAL...252
INSTALLATION...256
DRIVE SHAFT...260
DISASSEMBLY...260
ASSEMBLY...262
FINAL DRIVE...264
DISASSEMBLY...264
ASSEMBLY ...267
24 MAINTENANCE STANDARD...271
TRANSMISSION AND ENGINE MOUNT...272
TORQUE CONVERTER CHARGING PUMP...273
TORQUE CONVERTER...274
TORQFLOW TRANSMISSION...276
1. TRANSMISSION...276
2. TRANSMISSION CONTROL VALVE...278
3. SOLENOID VALVE...282
TRANSFER...283
DIFFERENTIAL...285
FINAL DRIVE...287
DRIVE SHAFT...288
AXLE MOUNT...289
40 STEERING SYSTEM...291
41 STRUCTURE AND FUNCTION...291
GENERAL...292
HYDRAULIC CIRCUIT FOR STEERING...294
HYDRAULIC CIRCUIT DIAGRAM FOR STEERING...295
OPERATIONS OF STEERING VALVE...296
STEERING CONTROL SYSTEM...298
STEERING VALVE...298
STEERING RELIEF VALVE...300
SAFETY VALVE (DIFFERENTIAL TYPE)...301
OPERATION OF DEMAND POOL...302
TWO-WAY RESTICTOR VALVE...304
STEERING CYLINDER...305
STEERING COLUMN AND GEAR BOX...306
CENTER HINGE PIN...307
STEERING LINKAGE...308
EMERGENCY STEERING PUMP (IF EQUIPPED)...309
DIVERTER VALVE (IF EQUIPPED)...310
SECURITY VALVE (IF EQUIPPED)...313
42 TESTING AND ADJUSTING...316
STANDARD VALUE TABLE...317
TOOL LIST FOR TESTING AND ADJUSTING...317
MEASURING STEERING WHEEL PLAY...318
MEASURING OPERATING FORCE OF STEERING WHEEL...319
OPERATING TIME OF STEERING WHEEL LOCK TO LOCK...320
TESTING STEERING LINKAGE...321
ADJUSTING STEERING LINKAGE...322
STEERING OIL PRESSURE...323
TROUBLESHOOTING...324
TROUBLESHOOTING TABLE...325
1. STEERING WHEEL DOES NOT TURN...325
2. STEERING WHEEL IS SLUGGISH...326
3. STEERING WHEEL MOVES UNSTEADILY OR IS SUBJECTED TO LARGE SHOCK...327
4. MACHINE TENDS TO TURN NATURALLY IN ONE PARTICULAR DIRECTION WHEN TRAVELING...327
5. LEFT AND RIGHT TURNING RADII ARE DIFFERENT...327
43 DISASSEMBLY AND ASSEMBLY...328
STEERING GEAR...329
REMOVAL...329
INSTALLATION...330
DISASSEMBLY...331
ASSEMBLY...332
STEERING VALVE...335
REMOVAL...335
INSTALLATION...337
DISASSEMBLY...339
ASSEMBLY...339
STEERING CYLINDER...341
REMOVAL...341
INSTALLATION...342
DISASSEMBLY...343
ASSEMBLY...345
CENTER HINGE PIN...348
REMOVAL...348
INSTALLATION...356
44 MAINTENANCE STANDARD...365
STEERING LINKAGE...366
STEERING COLUMN AND GEAR BOX...368
STEERING VALVE...369
STEERING CYLINDER MOUNT...371
STEERING CYLINDER...372
CENTER HINGE PIN...373
DIVERTER VALVE (IF EQUIPPED)...375
EMERGENCY STEERING PUMP (IF EQUIPPED)...377
SECURITY VALVE (IF EQUIPPED)...378
50 BRAKE AND AIR SYSTEM...379
51 STRUCTURE...379
GENERAL...380
AIR TANK...383
SAFETY VALVE...383
BRAKE VALVE...384
BRAKE ACTUATED...385
OPERATING IN BALANCE...386
BRAKE RELEASED...387
AIR GOVERNOR...388
TWO-WAY VALVE...390
BRAKE CHAMBER...391
SLACK ADJUSTER...393
BRAKE...396
PARKING BRAKE...398
PARKING BRAKE SOLENOID VALVE...400
SPRING CYLINDER...401
BRAKE CALIPER...402
52 TESTING AND ADJUSTING...403
STANDARD VALUE TABLE...404
TOOL LIST FOR TESTING AND ADJUSTING...405
MEASURING BRAKE PEDAL...406
MEASURING AIR...407
BRAKE PERFORMANCE...410
CHECKING BRAKE PISTON LEAKAGE...411
MEASURING WEAR OF BRAKE DISC...412
AIR BLEEDING FROM BRAKE LINE...413
PARKING BRAKE PERFORMANCE...414
CHECKING AND ADJUSTING PARKING BRAKE...415
TROUBLESHOOTING...417
TROUBLESHOOTING...418
1. AIR PRESSURE DOES NOT RISE AT ALL...418
2. AIR PRESSURE DOES NOT RISE TO THE SPECIFIED RANGE...419
3. BRAKE IS INEFFECTIVE OR NOT VERY EFFECTIVE...420
4. BRAKE DOES NOT RELEASE, OR DRAGS...421
5. PARKING BRAKE DOES NOT RELEASE, OR DRAGS ...422
53 DISASSEMBLY AND ASSEMBLY...423
AIR GOVERNOR...424
DISASSEMBLY...424
ASSEMBLY...425
BRAKE VALVE...426
REMOVAL...426
INSTALLATION...427
DISASSEMBLY...428
ASSEMBLY...430
BRAKE CHAMBER...432
REMOVAL...432
INSTALLATION...434
DISASSEMBLY...435
ASSEMBLY...438
SLACK ADJUSTER...441
REMOVAL...441
INSTALLATION...441
DISASSASSEMBLY...442
ASSEMBLY...443
BRAKE ASSEMBLY...444
DISASSEMBLY...444
ASSEMBLY...451
SPRING CYLINDER...459
REMOVAL...459
INSTALLATION...460
DISASSEMBLY...461
ASSEMBLY...463
PARKING BRAKE...465
REMOVAL...465
INSTALLATION...467
PARKING BRAKE PAD...469
REMOVAL...469
INSTALLATION...470
54 MAINTENANCE STANDARD...471
BRAKE VALVE...472
BRAKE CHAMBER...474
SLACK ADJUSTER...475
BRAKE...476
PARKING BRAKE...478
SPRING CYLINDER...479
60 WORK EQUIPMENT SYSTEM...480
61 STRUCTURE AND FUNCTION...480
GENERAL...481
HYDRAULIC CIRCUIT SYSTEM ...483
HYDRAULIC CIRCUIT DIAGRAM (FOR 2-SPOOL)...484
HYDRAULIC CIRCUIT DIAGRAM (FOR 3-SPOOL, WITH EMERGENCY STEERING (IF EQUIPPED))...485
BUCKET LINKAGE...486
BUCKET POSITIONER AND BOOM KICK-OUT...489
HYDRAULIC TANK...491
OIL FILTER BYPASS VALVE...492
BREATHER...492
HYDRAULIC AND STEERING PUMPS...493
MAIN CONTROL VALVE (FOR 2-SPOOL)...494
MAIN CONTROL VALVE (FOR 3-SPOOL (IF EQUIPPED))...496
RELIEF VALVE...504
SAFETY VALVE...505
SUCTION VALVE...506
HYDRAULIC CYLINDER...507
62 TESTING AND ADJUSTING...509
STANDARD VALUE TEST...510
TOOL LIST FOR TESTING AND ADJUSTING...511
MEASURING DUMP AND LIFT CONTROL LEVERS...512
ADJUSTING DUMP AND LIFT CONTROL LEVERS...513
MEASURING HYDRAULIC PRESSURE...514
MEASURING LIFT ARM AND BUCKET...516
MEASURING HYDRAULIC DRIFT OF LIFT ARM AND BUCKET...517
ADJUSTING BUCKET POSITIONER...518
ADJUSTING BOOM KICK-OUT...519
TROUBLESHOOTING...520
TROUBLESHOOTING TABLE...521
1. LIFT ARM DOES NOT RISE...521
2. LIFT ARM MOVES SLOWLY OR DOES NOT HAVE SUFFICIENT LIFTING POWER...522
3. LIFT ARM MOVEMENT BECOMES SLOW AFTER IT REACHES A CERTAIN HEIGHT...523
4. BUCKET CANNOT BE HELD DOWN WITH LIFT ARM CYLINDER...523
5. LIFT ARM HAS LARGE HYDRAULIC DRIFT...523
6. LIFT ARM MOVEMENT IS UNSTEADY DURING WORK...523
7. LIFT ARM DESCENDS MOMENTARILY WHEN CONTROL LEVER IS SHIFTED FROM "HOLD" TO "RAISE"...523
8. BUCKET DOES NOT TILT BACK...524
9. BUCKET MOVES SLOWLY OR HAS INSUFFICIENT TILT BACK POWER...525
10. BUCKET MOVEMENT BECOMES SLOW DURING TILT BACK...526
11. BUCKET CANNOT BE HELD DOWN BY THE BUCKET CYLINDER...526
12. BUCKET HAS LARGE HYDRAULIC DRIFT...526
13.BUCKET MOVES UNSTEADILY WHEN MACHINE TRAVEL UNDER LOAD (MAIN CONTROL VALVE IN "HOLD")...526
14. BUCKET DUMPS MOMENTARILY WHEN CONTROL...526
15. CONTROL LEVERS OF LIFT ARM AND DUMP MOVE STIFFLY AND SLUGGISHLY...527
63 DISASSEMBLY AND ASSEMBLY...528
HYDRAULIC TANK...529
REMOVAL...529
INSTALLATION...531
HYDRAULIC FILTER...533
REMOVAL ...533
INSTALLATION...533
HYDRAULIC, STEERING PUMP...534
REMOVAL...534
INSTALLATION...537
MAIN CONTROL VALVE...540
REMOVAL...540
INSTALLATION...543
DISASSEMBLY...545
ASSEMBLY...547
DUMP CYLINDER...549
REMOVAL...549
INSTALLATION...551
LIFT CYLINDER...552
REMOVAL...552
INSTALLATION...553
HYDRAULIC CYLINDER ASSEMBLY...554
DISASSEMBLY...554
ASSEMBLY...556
WORK EQUIPMENT...559
REMOVAL...559
INSTALLATION...562
COUNTERWEIGHT...565
REMOVAL...565
INSTALLATION...565
64 MAINTENANCE STANDARD...566
MAIN CONTROL VALVE (FOR 2-SPOOL)...567
MAIN CONTROL VALVE (FOR 3-SPOOL)(IF EQUIPPED)...569
DUMP CYLINDER...571
LIFT CYLINDER...572
BUCKET LINKAGE...573
BUCKET POSITIONER AND BOOM KICK-OUT...575
BUCKET...576
HYDRAULIC AND STEERING PUMP...577
80 ELECTRIC AND ELECTRONIC SYSTEM...578
81 STRUCTURE AND FUNCTION...578
ELECTRIC AND ELECTRONIC SYSTEM...579
82 TESTING AND ADJUSTING...628
ADJUSTING SPEEDOMETER MODULE IN THE VEHICLE MONITOR...629
TROUBLESHOOTING...630
BEFORE TROUBLESHOOTING...631
METHOD OF USING YES-NO TROUBLESHOOTING FLOW CHART...632
CONNECTOR TERMINAL NUMBERS...634
PRECAUTION WHEN HANDLING CONNECTOR...639
83 DISASSEMBLY AND ASSEMBLY...736
MACHINE MONITOR...737
REMOVAL...737
INSTALLATION...737
90 OTHERS...738
91 OTHERS...738
CAB...739
AIR CONDITIONER (IF EQUIPPED)...740
PIPING...740
AIR CONDITIONER WIRING DIAGRAM...741
AIR CONDITIONER ELECTRIC CIRCUIT...741
AIR CONDITIONER UNIT...742
93 DISASSEMBLY AND ASSEMBLY...745
CAB...746
REMOVAL...746
INSTALLATION...747
AIR CONDITIONER UNIT...748
REMOVAL...748
INSTALLATION...750
CONDENSER FOR AIR CONDITIONER...752
REMOVAL...752
INSTALLATION...752
DRY RECEIVER...753
REMOVAL ...753
INSTALLATION...753
COMPRESSOR FOR AIR CONDITIONER...754
REMOVAL ...754
INSTALLATION...754
97 GEAR PUMP...755
97 GENERAL...756
GENERAL...757
PRINCIPLE OF OPERATION...758
PRESSURE LOADED TYPE GEAR PUMP...761
FIXED SIDE PLATE TYPE GEAR PUMP...763
97 SA SERIES...764
STRUCTURE...765
TESTING AND ADJUSTING...768
DISASSEMBLY...771
ASSEMBLY...775
MAINTENANCE STANDARD...780
