Komatsu WA300-1 WA320-1 Wheel Loader Shop Manual SEBM04190107 PDF

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Komatsu WA300-1 WA320-1 Wheel Loader Shop Manual SEBM04190107 – PDF DOWNLOAD

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Komatsu WA300-1 WA320-1 Wheel Loader Shop Manual SEBM04190107 – PDF DOWNLOAD 

Language : English
Pages : 841
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu WA300-1 WA320-1 Wheel Loader Shop Manual SEBM04190107 – PDF DOWNLOAD 

MACHINE MODEL    SERIAL No.
WA300-1                    10001 and up
WA320-1                    10001 and up

COVER 1
CONTENTS 2
01 GENERAL 38
GENERAL VIEW 39
GENERAL ASSEMBLY DRAWING 40
SPECIFICATIONS 41
ENGINE ASSEMBLY DRAWING 43
ENGINE SPECIFICATIONS 44
WEIGHT TABLE 45
TABLE OF OIL AND COOLANT QUANTITIES 46
LOCATION OF SERIAL NUMBERS 47
10 ENGINE 48
11 STRUCTURE AND FUNCTION 48
ENGINE AND TRANSMISSION MOUNT 49
RADIATOR AND COOLER 50
FUEL TANK AND PIPING 51
ENGINE CONTROL 52
12 TESTING AND ADJUSTING 53
TABLE OF JUDGEMENT STANDARD 54
TESTING AND ADJUSTING TOOL LIST 55
ADJUSTING VALVE CLEARANCE 56
MEASURING COMPRESSION PRESSURE 57
TESTING AND ADJUSTING FUEL INJECTION TIMING 58
MEASURING ENGINE OIL PRESSURE AND TEMPERATURE 60
MEASURING BLOW-BY PRESSURE 61
TESTING AND ADJUSTING FAN BELT TENSION 62
MEASURING EXHAUST GAS COLOR 63
MEASURING OPERATING FORCE AND OPERATING ANGLE OF ACCELERATOR PEDAL 64
MEASURING ACCELERATOR PEDAL 66
ADJUSTING FUEL CUT SOLENOID 68
13 DISASSEMBLY AND ASSEMBLY 69
STARTING MOTOR ASSEMBLY 70
REMOVAL 70
INSTALLATION 70
ALTERNATOR ASSEMBLY 71
REMOVAL 71
INSTALLATION 71
ENGINE OIL COOLER ASSEMBLY 72
REMOVAL 72
INSTALLATION 72
FUEL INJECTION PUMP ASSEMBLY 73
REMOVAL 73
INSTALLATION 73
WATER PUMP ASSEMBLY 74
REMOVAL 74
INSTALLATION 74
NOZZLE HOLDER ASSEMBLY 75
REMOVAL 75
INSTALLATION 75
TURBOCHARGER ASSEMBLY 76
REMOVAL 76
INSTALLATION 76
CYLINDER HEAD ASSEMBLY 77
REMOVAL 77
INSTALLATION 83
RADIATOR 91
REMOVAL 91
INSTALLATION 93
ENGINE 95
REMOVAL 95
INSTALLATION 101
FUEL TANK ASSEMBLY 106
REMOVAL 106
INSTALLATION 107
20 POWER TRAIN 108
21 STRUCTURE AND FUNCTION 108
GENERAL 109
HYDRAULIC CIRCUIT DIAGRAM FOR POWER TRAIN 111
POWER TRAIN HYDRAULIC CIRCUIT SCHEMATICS 113
POWER TRAIN HYDRAULIC CIRCUIT DIAGRAM 114
TORQUE CONVERTER AND TRANSMISSION PIPING 115
TORQUE CONVERTER CHARGING PUMP 116
TORQUE CONVERTER 117
TORQUE CONVERTER OIL FILTER 119
TORQUE CONVERTER OIL COOLER 120
TORQUE CONVERTER REGULATOR VALVE 121
TORQFLOW TRANSMISSION 123
CLUTCH PACK 127
TRANSMISSION CONTROL VALVE (SERIAL NO 10001-19999) 137
UPPER VALVE 139
LOWER VALVE 140
PILOT REDUCING VALVE 141
TRANSMISSION SOLENOID VALVE 142
PRIORITY RELIEF VALVE 143
MODULATING RELIEF VALVE 144
MODULATING RELIEF VALVE, ACCUMULATOR VALVE, QUICK RETURN VALVE 145
EMERGENCY MANUAL SPOOL 149
SPEED SPOOL 152
TRANSMISSION CONTROL VALVE (SERIAL NO 20001 AND UP) 153
TRANSMISSION SOLENOID VALVE 154
UPPER VALVE 155
LOWER VALVE 156
TORQUE CONVERTER OIL OUTLET VALVE 157
PILOT REDUCING VALVE 158
TRANSMISSION SOLENOID VALVE 159
PRIORITY AND MAIN REGULATOR VALVE 160
MAIN REGULATOR VALVE 161
MODULATING RELIEF VALVE, ACCUMULATOR VALVE, QUICK RETURN VALVE 162
EMERGENCY MANUAL SPOOL 166
DIRECTIONAL SPOOL 168
FILL VALVE 169
PILOT OIL FILTER 171
DIFFERENTIAL 173
FINAL DRIVE 177
AXLE MOUNT 179
TIRE AND WHEEL 183
22 TESTING AND ADJUSTING 184
STANDARD VALUE TABLE 185
TOOL LIST FOR TESTING AND ADJUSTING 186
MEASURING ENGINE STALL SPEED 187
MEASURING OIL PRESSURE OF TORQUE CONVERTER AND TRANSMISSION 189
MEASURING SHIFT LEVER 193
TIRE AND WHEEL 194
METHOD FOR OPERATION OF EMERGENCY MANUAL SPOOL 195
TROUBLESHOOTING 196
PRECAUTIONS WHEN TROUBLESHOOTING 197
METHOD OF READING TROUBLESHOOTING TABLE 199
PREVENTING RECURRENCE OF TROUBLE 201
METHOD OF LOCATING MAIN PROBLEM POINTS WHEN TROUBLESHOOTING TRANSMISSION SYSTEM 202
TROUBLESHOOTING TABLE 203
1 MACHINE DOES NOT MOVE OFF 203
2 MACHINE SPEED IS LOW, THRUST IS WEAK, GRADEABILITY FALLS OFF 205
4 LARGE TIME LAG WHEN MOVING OFF OR CHANGING GEAR 206
5 OIL TEMPERATURE IN TORQUE CONVERTER IS HIGH 207
23 DISASSEMBLY AND ASSEMBLY 208
TORQUE CONVERTER CHARGING PUMP 209
REMOVAL 209
INSTALLATION 209
TRANSMISSION, TORQUE CONVERTER 210
REMOVAL 210
INSTALLATION 217
TORQUE CONVERTER 223
DISASSEMBLY 223
ASSEMBLY 226
TRANSMISSION 229
DISASSEMBLY 229
ASSEMBLY 238
CLUTCH PACK 251
DISASSEMBLY 251
ASSEMBLY 259
TRANSMISSION CONTROL VALVE 274
REMOVAL 274
INSTALLATION 275
DISASSEMBLY 277
ASSEMBLY 279
DRIVE SHAFT 286
DISASSEMBLY 286
ASSEMBLY 288
FRONT AXLE 290
REMOVAL 290
INSTALLATION 292
REAR AXLE 294
REMOVAL 294
INSTALLATION 297
DIFFERENTIAL 300
DISASSEMBLY 300
ASSEMBLY 304
AXLE HOUSING 315
DISASSEMBLY 315
ASSEMBLY 319
24 MAINTENANCE STANDARD 325
ENGINE AND TRANSMISSION MOUNT 326
TORQUE CONVERTER CHARGING PUMP 327
TORQUE CONVERTER 328
TORQUE CONVERTER REGULATOR VALVE 329
TRANSMISSION 330
TRANSMISSION CLUTCH ASSEMBLY 333
TRANSMISSION CONTROL VALVE 335
UPPER VALVE 335
LOWER VALVE 341
SOLENOID VALVE 343
AXLE 345
DIFFERENTIAL 347
FINAL DRIVE 349
DRIVE SHAFT 350
AXLE MOUNT 351
40 STEERING SYSTEM 354
41 STRUCTURE AND FUNCTION 354
GENERAL 355
HYDRAULIC CIRCUIT FOR STEERING 357
HYDRAULIC CIRCUIT DIAGRAM FOR STEERING 358
OPERATION OF STEERING VALVE 359
STEERING VALVE 361
STEERING RELIEF VALVE 363
SAFETY VALVE (WITH SUCTION VALVE) 364
OPERATION OF DEMAND VALVE 366
TWO-WAY RESTRICTOR VALVE 368
STEERING COLUMN AND GEAR BOX 369
STEERING LINKAGE 370
STEERING CYLINDER 371
CENTER HINGE PIN 372
EMERGENCY STEERING PUMP (IF EQUIPPED) 373
DIVERTER VALVE (IF EQUIPPED) 374
SECURITY VALVE (IF EQUIPPED) 377
42 TESTING AND ADJUSTING 380
STANDARD VALUE TABLE 381
TOOL LIST FOR TESTING AND ADJUSTING 381
MEASURING STEERING WHEEL PLAY 382
MEASURING OPERATING FORCE OF STEERING WHEEL 383
OPERATING TIME OF STEERING WHEEL LOCK TO LOCK 384
TESTING STEERING LINKAGE 385
ADJUSTING STEERING LINKAGE 386
STEERING OIL PRESSURE 387
TROUBLESHOOTING 388
TROUBLESHOOTING TABLE 389
1 STEERING WHEEL DOES NOT TURN 389
2 STEERING WHEEL IS SLUGGISH 390
3 STEERING WHEEL MOVES UNSTEADILY OR IS SUBJECTED TO LARGE SHOCK 391
4 MACHINE TENDS TO TURN NATURALLY IN ONE PARTICULAR DIRECTION WHEN TRAVELING 391
5 LEFT AND RIGHT TURNING RADII ARE DIFFERENT 391
43 DISASSEMBLY AND ASSEMBLY 392
STEERING GEAR BOX 393
REMOVAL 393
INSTALLATION 394
DISASSEMBLY 395
ASSEMBLY 396
STEERING VALVE 399
REMOVAL 399
INSTALLATION 401
DISASSEMBLY 403
ASSEMBLY 405
STEERING CYLINDER 407
REMOVAL 407
INSTALLATION 408
DISASSEMBLY 409
ASSEMBLY 411
CENTER HINGE PIN 414
REMOVAL 414
INSTALLATION 421
44 MAINTENANCE STANDARD 428
STEERING VALVE 429
STEERING CYLINDER MOUNT 431
STEERING CYLINDER 432
CENTER HINGE PIN 433
STEERING LINKAGE 435
STEERING COLUMN AND GEAR BOX 437
EMERGENCY STEERING PUMP (IF EQUIPPED) 438
DIVERTER VALVE (IF EQUIPPED) 439
SECURITY VALVE (IF EQUIPPED) 441
50 BRAKE SYSTEM 442
51 STRUCTURE AND FUNCTION 442
GENERAL 443
ACCUMULATOR 444
BRAKE BOOSTER 445
BRAKE 450
PARKING BRAKE 452
BRAKE CALIPER 454
52 TESTING AND ADJUSTING 455
STANDARD VALUE TABLE 456
TOOL LIST FOR TESTING AND ADJUSTING 457
MEASURING BRAKE PEDAL 458
BRAKE PERFORMANCE 459
CHECKING BRAKE PISTON LEAKAGE 460
MEASURING WEAR OF BRAKE DISC 461
AIR BLEEDING FROM BRAKE LINE 462
PARKING BRAKE PERFORMANCE 463
CHECKING AND ADJUSTING PARKING BRAKE 464
MEASURING CLEARANCE 466
TROUBLESHOOTING 467
TROUBLESHOOTING TABLE 468
1 BRAKE IS INEFFECTIVE OR NOT VERY EFFECTIVE 468
2 BRAKE CANNOT BE RELEASED OR DRAGS 469
53 DISASSEMBLY AND ASSEMBLY 470
BRAKE BOOSTER 471
REMOVAL 471
INSTALLATION 472
DISASSEMBLY 473
ASSEMBLY 475
PARKING BRAKE 477
REMOVAL 477
INSTALLATION 479
PARKING BRAKE PAD 481
REMOVAL 481
INSTALLATION 481
54 MAINTENANCE STANDARD 482
BRAKE BOOSTER 483
BRAKE 484
PARKING BRAKE 485
60 WORK EQUIPMENT SYSTEM 486
61 STRUCTURE AND FUNCTION 486
GENERAL 487
HYDRAULIC CIRCUIT SYSTEM 489
HYDRAULIC CIRCUIT DIAGRAM (FOR 2-SPOOL) 490
HYDRAULIC CIRCUIT DIAGRAM (FOR 3-SPOOL) 491
WORK EQUIPMENT LEVER LINKAGE 492
BUCKET LINKAGE 493
BUCKET POSITIONER AND BOOM KICK-OUT 495
HYDRAULIC TANK 497
OIL FILTER BYPASS VALVE 499
BREATHER 499
HYDRAULIC AND STEERING PUMPS 500
MAIN CONTROL VALVE (FOR 2-SPOOL) 501
MAIN CONTROL VALVE (FOR 3-SPOOL) 503
RELIEF VALVE 505
SAFETY VALVE (WITH SUCTION VALVE) 506
SUCTION VALVE 507
HYDRAULIC CYLINDER 514
62 TESTING AND ADJUSTING 515
STANDARD VALUE TABLE 516
TOOL LIST FOR TESTING AND ADJUSTING 517
MEASURING DUMP AND LIFT CONTROL LEVERS 518
ADJUSTING DUMP AND LIFT CONTROL LEVERS 519
MEASURING HYDRAULIC PRESSURE 520
MEASURING LIFT ARM AND BUCKET 522
MEASURING HYDRAULIC DRIFT OF LIFT ARM AND BUCKET 523
ADJUSTING BUCKET POSITIONER 524
ADJUSTING BOOM KICK-OUT 525
TROUBLESHOOTING 526
TROUBLESHOOTING TABLE 527
1 LIFT ARM DOES NOT RISE 527
2 LIFT ARM MOVES SLOWLY OR DOES NOT HAVE SUFFICIENT LIFTING POWER 528
3 LIFT ARM MOVEMENT BECOMES SLOW AFTER IT REACHES A CERTAIN HEIGHT 529
4 BUCKET CANNOT BE HOLD DOWN WITH LIFT CYLINDER 529
5 LIFT ARM HAS LARGE HYDRAULIC DRIFT 529
6 LIFT ARM MOVEMENT IS UNSTEADY DURING WORK 529
7 LIFT ARM DESCENDS MOMENTARILY WHEN CONTROL LEVER IS SHIFTED FROM “HOLD” TO “RAISE” 529
8 BUCKET DOES NOT TILT BACK 530
9 BUCKET MOVES SLOWLY OR HAS INSUFFICIENT TILT BACK POWER 531
10 BUCKET MOVEMENT BECOMES SLOW DURING TILT BACK 532
11 BUCKET CANNOT BE HELD DOWN BY THE DUMP CYLINDER 532
12 BUCKET HAS LARGE HYDRAULIC DRIFT 532
13 BUCKET MOVES UNSTEADILY WHEN MACHINE TRAVELS UNDER LOAD 532
14 BUCKET DUMPS MOMENTARILY WHEN CONTROL LEVER IS SHIFTED FROM “HOLD” TO “TILT BACK” 532
15 CONTROL LEVERS OF LIFT ARM AND BUCKET MOVE STIFFLY AND SLUGGISHLY 533
63 DISASSEMBLY AND ASSEMBLY 534
HYDRAULIC TANK 535
REMOVAL 535
INSTALLATION 537
HYDRAULIC FILTER 539
REMOVAL 539
INSTALLATION 539
HYDRAULIC, STEERING PUMP 540
REMOVAL 540
INSTALLATION 541
MAIN CONTROL VALVE 542
REMOVAL 542
INSTALLATION 543
DISASSEMBLY 544
ASSEMBLY 546
DUMP CYLINDER 548
REMOVAL 548
INSTALLATION 550
LIFT CYLINDER 551
REMOVAL 551
INSTALLATION 552
LIFT AND DUMP CYLINDER 553
DISASSEMBLY 553
ASSEMBLY 555
WORK EQUIPMENT 558
REMOVAL 558
INSTALLATION 561
COUNTERWEIGHT 564
REMOVAL 564
INSTALLATION 564
64 MAINTENANCE STANDARD 565
MAIN CONTROL VALVE (FOR 2-SPOOL) 566
MAIN CONTROL VALVE (FOR 3-SPOOL) 568
DUMP CYLINDER 570
LIFT CYLINDER 571
BUCKET LINKAGE 572
BUCKET POSITIONER AND BOOM KICK-OUT 574
BUCKET 575
HYDRAULIC AND STEERING PUMP 576
80 ELECTRIC AND ELECTRONIC SYSTEM 577
81 STRUCTURE AND FUNCTION 577
ELECTRIC AND ELECTRONIC SYSTEM 578
ELECTRICAL CIRCUIT DIAGRAM 579
ENGINE STARTING CIRCUIT 581
ENGINE STOP CIRCUIT 582
PREHEATING CIRCUIT 583
PREHEATING AND AFTER-HEATING WITH HEATER SWITCH 583
PREHEATING WITH STARTING SWITCH 584
COMBINATION SWITCH 585
ELECTRICAL TRANSMISSION CONTROL 586
ELECTRICAL TRANSMISSION CONTROL DIAGRAM 587
TRANSMISSION CUT-OFF SELECTOR SWITCH 588
NEUTRALIZER RELAY 589
ELECTRONIC VEHICLE MONITORING SYSTEM (EVMS) 590
MONITOR PANEL 591
INDICATION ON MONITOR PANEL 592
CONTROLLER 594
SENSOR 595
PROXIMITY SWITCH 600
82 TESTING AND ADJUSTING 604
ADJUSTING SPEEDOMETER MODULE 605
TROUBLESHOOTING 607
CHECKS BEFORE TROUBLESHOOTING 608
METHOD OF USING YES-NO TROUBLESHOOTING FLOW CHART 609
CONNECTOR TERMINAL NUMBERS 611
PRECAUTION WHEN HANDLING CONNECTOR 616
ELECTRICAL WIRING DIAGRAM 618
ELECTRICAL CIRCUIT SYSTEM 619
TROUBLESHOOTING CHART FOR ELECTRIC SYSTEM (E-1 TO E-16) 624
E-1 ENGINE DOES NOT START 625
E-2 ENGINE DOES NOT STOP 628
E-3 ENGINE STOPS WHEN MACHINE IS TRAVELING 628
E-4 TRANSMISSION IS NOT RETURNED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED 630
E-5 MACHINE MOVES NEITHER IN FORWARD NOR IN REVERSE 632
E-6 MACHINE MOVES IN REVERSE BUT NOT IN FORWARD 636
E-7 MACHINE MOVES IN FORWARD BUT NOT IN REVERSE 638
E-8 MACHINE MOVES FORWARD EVEN WHEN TRANSMISSION CONTROL LEVERS ARE IN NEUTRAL 638
E-9 MACHINE MOVES IN REVERSE EVEN WHEN TRANSMISSION CONTROL LEVERS ARE IN NEUTRAL 640
E-10 MACHINE ALWAYS TRAVELS IN 1ST 640
E-11 TRANSMISSION DOES NOT CHANGE GEAR 642
E-12 MACHINE TRAVELS WHEN TRANSMISSION CUT-OFF SWITCH IS ON 644
E-13 TRANSMISSION CANNOT BE CUT-OFF 645
E-14 TRANSMISSION DOES NOT RETURN TO NEUTRAL 646
E-15 PREHEATING DOES NOT WORK 649
E-16 PREHEATING DOES NOT STOP 652
ELECTRONIC VEHICLE MONITORING SYSTEM 653
TROUBLESHOOTING CHART FOR ELECTRIC SYSTEM (E-1 TO E-16) 654
E-1 ENGINE DOES NOT START 655
E-2 ENGINE DOES NOT STOP 658
E-3 ENGINE STOPS WHEN MACHINE IS TRAVELING 658
E-4 TRANSMISSION IS NOT RETURNED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED 660
E-5 MACHINE MOVES NEITHER IN FORWARD NOR IN REVERSE 662
E-6 MACHINE MOVES IN REVERSE BUT NOT IN FORWARD 666
E-7 MACHINE MOVES IN FORWARD BUT NOT IN REVERSE 668
E-8 MACHINE MOVES FORWARD EVEN WHEN TRANSMISSION CONTROL LEVERS ARE IN NEUTRAL 668
E-9 MACHINE MOVES IN REVERSE EVEN WHEN TRANSMISSION CONTROL LEVERS ARE IN NEUTRAL 670
E-10 MACHINE ALWAYS TRAVELS IN 2ND 670
E-11 TRANSMISSION DOES NOT CHANGE GEAR 672
E-12 TRANSMISSION CANNOT BE CUT-OFF 674
E-13 TRANSMISSION DOES NOT RETURN TO NEUTRAL 675
E-14 PREHEATING DOES NOT WORK 678
E-15 PREHEATING DOES NOT STOP 681
TROUBLESHOOTING TABLE FOR MONITORING SYSTEM 683
TROUBLESHOOTING CHART FOR ELECTRONIC VEHICLE MONITORING SYSTEM (M-1 TO M-32)(SERIAL NO 10001-19999) 684
M-1 EVEN ENGINE IS STOPPED, BRAKE OIL LEVEL DISPLAY FLASHES 685
M-2 EVEN ENGINE IS STOPPED, ENGINE OIL LEVEL DISPLAY FLASHES 685
M-3 EVEN ENGINE IS STOPPED, COOLANT LEVEL DISPLAY FLASHES 688
M-4 BATTERY CHARGE DISPLAY FLASHES 688
M-5 FUEL LEVEL DISPLAY FLASHES 690
M-6 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, BRAKE OIL LEVEL DISPLAY FLASHES 690
M-7 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, ENGINE OIL PRESSURE DISPLAY FLASHES 692
M-8 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES 692
M-9 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, BRAKE SERVO PRESSURE DISPLAY FLASHES (IF EQUIPPED) 694
M-10 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, COOLANT TEMPERATURE DISPLAY FLASHES 694
M-11 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, TORQUE CONVERTER OIL TEMPERATURE DISPLAY FLASHES 696
M-12 PARKING BRAKE DISPLAY LIGHTS UP, OR DOES NOT LIGHT UP 697
M-13 WORKING LAMP DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP 699
M-14 PREHEAT DISPLAY LIGHTS UP OR DOES NOT LIGHT UP 701
M-15 FAILURE IN MAIN STEERING DISPLAY LIGHTS UP OR DOES NOT LIGHT UP (IF EQUIPPED) 703
M-16 EMERGENCY STEERING NORMAL DISPLAY LIGHTS UP OR DOES NOT LIGHT UP (IF EQUIPPED) 705
M-17 TRANSMISSION CUT-OFF DISPLAY LIGHTS UP OR DOES NOT LIGHT UP 707
M-18 TURN SIGNAL LAMPS, HIGH BEAM LIGHT UP OR DO NOT LIGHT UP 709
M-19 SPEEDOMETER DISPLAY DOES NOT WORK 713
M-20 HOURMETER DOES NOT WORK NORMALLY 715
M-21 ALL OR PART OF MONITOR PANEL DOES NOT WORK 717
M-22 EVEN WHEN ENGINE IS STOPPED, ENGINE OIL PRESSURE DISPLAY FLASHES, OR BATTERY CHARGE DISPLAY FLASHES 719
M-23 NO LAMPS ON MONITOR LIGHT UP (IMMEDIATELY AFTER TURNING STARTING SWITCH TO ON, ENGINE STOPPED) 720
M-24 CENTRAL WARNING LAMP DOES NOT GO OUT 721
M-25 CENTRAL WARNING BUZZER DOES NOT STOP 723
M-26 NONE OF PANEL LAMPS ON MACHINE MONITOR LIGHT UP 725
M-27 SOME OF PANEL LAMPS ON MACHINE MONITOR DO NOT LIGHT UP 728
M-28 EMERGENCY ITEM IS FLASHING, BUT ALARM BUZZER DOES NOT SOUND 730
M-29 EMERGENCY ITEM OR NON-EMERGENCY ITEM IS FLASHING, BUT WARNING LAMP DOES NOT FLASH 732
M-30 ABNORMALITY IN FUEL GAUGE 734
M-30-1 ABNORMALITY IN FUEL LEVEL SENSOR 735
M-31 ABNORMALITY IN COOLANT TEMPERATURE GAUGE 736
M-32 ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE 738
TROUBLESHOOTING TABLE FOR MONITORING SYSTEM 740
TROUBLESHOOTING CHART FOR ELECTRONIC VEHICLE MONITORING SYSTEM (M-1 TO M-32)(SERIAL NO 20001 AND UP) 741
M-1 EVEN ENGINE IS STOPPED, BRAKE OIL LEVEL DISPLAY FLASHES 742
M-2 EVEN ENGINE IS STOPPED, ENGINE OIL LEVEL DISPLAY FLASHES 742
M-3 EVEN ENGINE IS STOPPED, COOLANT LEVEL DISPLAY FLASHES 744
M-4 BATTERY CHARGE DISPLAY FLASHES 744
M-5 FUEL LEVEL DISPLAY FLASHES 746
M-6 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, BRAKE OIL LEVEL DISPLAY FLASHES 746
M-7 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, ENGINE OIL PRESSURE DISPLAY FLASHES 748
M-8 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES 748
M-9 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, BRAKE SERVO PRESSURE DISPLAY FLASHES (IF EQUIPPED) 750
M-10 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, COOLANT TEMPERATURE DISPLAY FLASHES 750
M-11 WHEN ENGINE IS RUNNING, EVEN THOUGH THERE IS NO ABNORMALITY IN MACHINE, TORQUE CONVERTER OIL TEMPERATURE DISPLAY FLASHES 752
M-12 PARKING BRAKE DISPLAY LIGHTS UP, OR DOES NOT LIGHT UP 753
M-13 WORKING LAMP DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP 755
M-14 PREHEAT DISPLAY LIGHTS UP OR DOES NOT LIGHT UP 757
M-15 FAILURE IN MAIN STEERING DISPLAY LIGHTS UP OR DOES NOT LIGHT UP (IF EQUIPPED) 759
M-16 EMERGENCY STEERING NORMAL DISPLAY LIGHTS UP OR DOES NOT LIGHT UP (IF EQUIPPED) 761
M-17 TRANSMISSION CUT-OFF DISPLAY LIGHTS UP OR DOES NOT LIGHT UP 763
M-18 TURN SIGNAL LAMPS, HIGH BEAM LIGHT UP OR DO NOT LIGHT UP 765
M-19 SPEEDOMETER DISPLAY DOES NOT WORK 769
M-20 HOURMETER DOES NOT WORK NORMALLY 771
M-21 ALL OR PART OF MONITOR PANEL DOES NOT WORK 773
M-22 EVEN WHEN ENGINE IS STOPPED, ENGINE OIL PRESSURE DISPLAY FLASHES, OR BATTERY CHARGE DISPLAY FLASHES 774
M-23 NO LAMPS ON MONITOR LIGHT UP (IMMEDIATELY AFTER TURNING STARTING SWITCH TO ON, ENGINE STOPPED) 775
M-24 CENTRAL WARNING LAMP DOES NOT GO OUT 776
M-25 CENTRAL WARNING BUZZER DOES NOT STOP 777
M-26 NONE OF PANEL LAMPS ON MACHINE MONITOR LIGHT UP 778
M-27 SOME OF PANEL LAMPS ON MACHINE MONITOR DO NOT LIGHT UP 781
M-28 EMERGENCY ITEM IS FLASHING, BUT ALARM BUZZER DOES NOT SOUND 782
M-29 EMERGENCY ITEM OR NON-EMERGENCY ITEM IS FLASHING, BUT WARNING LAMP DOES NOT FLASH 783
M-30 ABNORMALITY IN FUEL GAUGE 785
M-30-1 ABNORMALITY IN FUEL LEVEL SENSOR 786
M-31 ABNORMALITY IN COOLANT TEMPERATURE GAUGE 787
M-32 ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE 789
TABLE OF MONITOR REFERENCE VALUES 791
83 DISASSEMBLY AND ASSEMBLY 798
MACHINE MONITOR 799
REMOVAL 799
INSTALLATION 799
90 OTHERS 800
91 STRUCTURE AND FUNCTION 800
CAB 801
AIR CONDITIONER (OPTION) 802
AIR CONDITIONER PIPING 802
AIR CONDITIONER WIRING DIAGRAM 803
AIR CONDITIONER ELECTRIC CIRCUIT 803
AIR CONDITIONER UNIT 804
AIR CONDITIONER COMPRESSOR 805
AIR CONDITIONER CONDENSOR 805
AIR CONDITIONER DRY RESERVOIR 806
93 DISASSEMBLY AND ASSEMBLY 807
CAB 808
REMOVAL 808
INSTALLATION 809
AIR CONDITIONER UNIT 810
REMOVAL 810
INSTALLATION 812
CONDENSER FOR AIR CONDITIONER 814
REMOVAL 814
INSTALLATION 814
DRY RECEIVER 815
REMOVAL 815
INSTALLATION 815
COMPRESSOR FOR AIR CONDITIONER 816
REMOVAL 816
INSTALLATION 816
97 GEAR PUMP 817
GENERAL 817
GENERAL 818
PRINCIPLE OF OPERATION 819
PRESSURE LOADED TYPE GEAR PUMP 822
FIXED SIDE PLATE TYPE GEAR PUMP 824
SA SERIES 825
STRUCTURE 826
TESTING AND ADJUSTING 829
DISASSEMBLY 832
ASSEMBLY 836
MAINTENANCE STANDARD 841

DESCRIPTION:

Komatsu WA300-1 WA320-1 Wheel Loader Shop Manual SEBM04190107 – PDF DOWNLOAD

MACHINE MODEL    SERIAL No.
WA300-1                    10001 and up
WA320-1                    10001 and up

GENERAL PRECAUTIONS :

Mistakes in operation are extremely dangerous. Read the OPERATION & MAINTENANCE MANUAL carefully BEFORE operating the machine.

PREPARATIONS FOR WORK:

S.V 29/12/24