Komatsu WA600-3 Wheel Loader Shop Manual SEBM013222 PDF

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Komatsu WA600-3 Wheel Loader Shop Manual SEBM013222 – PDF DOWNLOAD

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Komatsu WA600-3 Wheel Loader Shop Manual SEBM013222 – PDF DOWNLOAD 

Language : English
Pages : 1300
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu WA600-3 Wheel Loader Shop Manual SEBM013222 – PDF DOWNLOAD 

COVER 1
CONTENTS 2
01 GENERAL 29
GENERAL ASSEMBLY DRAWING 30
SPECIFICATIONS 35
WEIGHT TABLE 41
LIST OF LUBRICANT AND COOLANT 44
10 STRUCTURE AND FUNCTION 47
POWER TRAIN 48
POWER TRAIN SYSTEM 50
RADIATOR, HYDRAULIC OIL COOLER 54
RADIATOR, HYDRAULIC OIL COOLER (WITH SUCTION FAN) 58
TORQUE CONVERTER AND TRANSMISSION PIPING 61
HYDRAULIC CIRCUIT FOR POWER TRAIN 64
HYDRAULIC CIRCUIT DIAGRAM FOR POWER TRAIN 66
TORQUE CONVERTER 70
TORQUE CONVERTER REGULATOR VALVE　(SERIAL NO : 52001 AND UP) 76
TRANSMISSION 79
TRANSMISSION CONTROL VALVE 88
TORQUE CONVERTER OIL COOLER 108
TORQUE CONVERTER OIL FILTER 109
TRANSFER 111
DRIVE SHAFT 112
CENTER SUPPORT 113
AXLE 114
DIFFERENTIAL 116
LIMITED SLIP DIFFERENTIAL 119
FINAL DRIVE 123
AXLE MOUNT 126
CENTER HINGE PIN 128
STEERING PIPING 129
STEERING COLUMN 132
STEERING UNIT (ORBIT-ROLL VALVE) 133
STEERING VALVE 136
TWO-WAY RESTRICTION VALVE 147
STOP VALVE 148
EMERGENCY STEERING PIPING 149
DIVERTER VALVE (FOR EMERGENCY STEERING) 150
BRAKE PIPING 154
BRAKE CIRCUIT DIAGRAM 158
BRAKE VALVE 162
CHARGE VALVE 169
ACCUMULATOR (FOR BRAKE) 173
SLACK ADJUSTER 174
BRAKE 179
PARKING BRAKE 183
SPRING CYLINDER 185
PARKING BRAKE SOLENOID VALVE 186
HYDRAULIC PIPING 188
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM 192
WORK EQUIPMENT LEVER LINKAGE 198
HYDRAULIC TANK 199
ACCUMULATOR (FOR PPC VALVE) 201
PPC VALVE 202
PPC RELIEF VALVE 206
CUT-OFF VALVE 207
MAIN CONTROL VALVE 210
AUTO GREASE SYSTEM 224
LUBRICATION OF WORK EQUIPMENT 236
WORK EQUIPMENT LINKAGE 238
BUCKET 240
BUCKET POSITIONER AND BOOM KICK-OUT 241
OPERATION OF PROXIMITY SWITCH 245
ROPS CANOPY 249
CAB 250
CAB HEATER 251
AIR CONDITIONER 253
ELECTRIC CIRCUIT DIAGRAM 258
MACHINE MONITOR SYSTEM 264
MAIN MONITOR 267
MAINTENANCE MONITOR 272
MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL 274
ENGINE STARTING CIRCUIT 290
ENGINE STOP CIRCUIT 293
AUTO PRIMING SYSTEM (APS) (SERIAL NO : 50001 – 52000) 295
PRE-HEATING CIRCUIT (SERIAL NO : 52001 AND UP) 299
ELECTRIC TRANSMISSION CONTROL 301
KICK-DOWN, HOLD SWITCH 304
KICK-DOWN ELECTRICAL CIRCUIT 305
ELECTRIC PARKING BRAKE CONTROL 311
E C S S (ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM) 320
20 TESTING AND ADJUSTING 335
STANDARD VALVE TABLE 336
STANDARD VALVE TABLE FOR ENGINE RELATED PARTS 336
STANDARD VALVE TABLE FOR CHASSIS RELATED PARTS 339
STANDARD VALVE TABLE FOR ELECTRICAL PARTS 350
TESTING AND ADJUSTING 363
TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING 364
MEASURING ENGINE SPEED 369
MEASURING EXHAUST GAS COLOR 374
ADJUSTING VALVE CLEARANCE 375
TESTING AND ADJUSTING INJECTOR LIFT (SERIAL NO : 52001 AND UP) 377
MEASURING COMPRESSION PRESSURE 379
MEASURING BLOW-BY PRESSURE 382
MEASURING ENGINE OIL PRESSURE 383
TESTING AND ADJUSTING FUEL INJECTION TIMING (SERIAL NO : 50001 – 52000) 384
REPLACING FAN BELT ADJUSTING AUTO-TENSIONER 386
TESTING AND ADJUSTING ALTERNATOR BELT TENSION 387
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR 388
HANDLING EQIPMENT IN FUEL CIRCUIT (SERIAL NO : 52001 AND UP) 389
MEASURING FUEL PUMP OUTLET PORT PRESSURE (SERIAL NO : 52001 AND UP) 389
BLEEDING AIR FROM FUEL CIRCUIT (SERIAL NO : 52001 AND UP) 390
MEASURING EXHAUST TEMPERATURE 392
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE) 395
ADJUSTING SPEED SENSOR 396
ADJUSTING FUEL CONTROL CABLE (SERIAL NO : 50001 – 52000) 397
METHOD FOR ADJUSTING ENGINE STOP MOTOR CABLE (SERIAL NO : 50001 – 52000) 398
TESTING AND ADJUSTING TORQUE CONVERTER, TRANSMISSION OIL PRESSURE 400
PROCEDURE FOR FLUSHING TORQUE CONVERTER, TRANSMISSION HYDRAULIC CIRCUIT 409
PROCEDURE FOR MOVING MACHINE WHEN TRANSMISSION VALVE FAILS 410
TESTING AND ADJUSTING STEERING OIL PRESSURE 414
TESTING AND ADJUSTING STEERING STOP VALVE 416
TESTING BRAKE OIL PRESSURE 417
MEASURING WEAR OF BRAKE DISC 418
MEASURING BRAKE PERFORMANCE 419
TESTING AND ADJUSTING PARKING BRAKE 420
TESTING AND ADJUSTING ACCUMULATOR CHARGE CUT-IN AND CUT-OUT PRESSURE 422
TESTING OF ACCUMULATOR NITROGEN GAS PRESSURE AND PROCEDURE FOR CHARGING ACCUMULATOR WITH NITROGEN GAS 423
TESTING AND ADJUSTING PPC OIL PRESSURE 435
MEASURING WORK EQUIPMENT HYDRAULIC PRESSURE 437
ADJUSTING WORK EQUIPMENT LEVER LINKAGE 439
TESTING AND ADJUSTING OF BUCKET POSITIONER 441
TESTING AND ADJUSTING OF BOOM KICK-OUT 442
TESTING PROXIMITY SWITCH ACTUATION PILOT LAMP 443
ADJUSTING MAIN MONITOR (SPEEDOMETER MODULE) 444
BLEEDING AIR 445
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT 446
PM CLINIC INSPECTION TABLE 447
TROUBLESHOOTING 449
POINTS TO REMEMBER WHEN TROUBLESHOOTING 450
SEQUENCE OF EVENTS IN TROUBLESHOOTING 451
POINT TO REMENBER WHEN CARRYING OUT MAINTENANCE 452
CHECKS BEFORE TROUBLESHOOTING 460
CONNECTOR TYPES AND MOUNTING LOCATIONS 461
CONNECTOR ARRANGEMENT DIAGRAM 464
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS 476
METHOD OF USING TROUBLESHOOTING CHARTS 497
METHOD OF USING MATRIX TROUBLESHOOTING TABLES 499
TROUBLESHOOTING OF ENGINE SYSTEM (S MODE) 501
METHOD OF USING TROUBLESHOOTING CHARTS 502
S- 1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME) 506
S- 2 ENGINE DOES NOT START 508
S- 3 ENGINE DOES NOT PICK-UP SMOOTHLY (FOLLOW-UP IS POOR) 511
S- 4 ENGINE STOPS DURING OPERATIONS 512
S- 5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING) 513
S- 6 ENGINE LACKS OUTPUT 514
S- 7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION) 515
S- 8 OIL COMSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE) 516
S- 9 OIL BECOMES CONTAMINATED QUICKLY 517
S-10 FUEL CONSUMPTION IS EXCESSIVE 518
S-11 OIL IS IN COOLANT, OR COOLANT SPURTS BACK, OR COOLANT LEVEL GOES DOWN 519
S-12 OIL PRESSURE LAMP LIGHTS UP (DROP IN OIL PRESSURE) 520
S-13 OIL LEVEL RISES 521
S-14 COOLANT TEMPERATURE BECOMES TOO HIGH (OVERHEATING) 522
S-15 ABNORMAL NOISE IS MADE 523
S-16 VIBRATION IS EXCESSIVE 524
TROUBLESHOOTING OF ENGINE CONTROLLER SYSTEM (EA MODE) 525
METHOD OF ERROR CODE DISPLAY 527
ACTION TAKEN BY CONTROLLER AND CONDITION OF MACHINE WHEN ERROR CODE IS DISPLAYED 530
SCHEMATIC DIAGRAM FOR ENGINE CONTROL SYSTEM 538
EA-1 ERROR CODE [111] (ABNORMALITY IN CONTROLLER MEMORY) 540
EA-2 ERROR CODE [112] (ABNORMALITY IN TIMING RAIL ACTUATOR 540
EA-3 ERROR CODE [113] (ABNORMALITY WITH ELECTRIC CURRENT IN TIMING RAIL ACTUATOR SYSTEM) 541
EA-4 ERROR CODE [115] (ABNORMALITY IN ENGINE SPEED SENSOR 2 SYSTEM) 542
EA-5 ERROR CODE [116] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM HIGH LEVEL) 544
EA-6 ERROR CODE [117] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM LOW LEVEL) 545
EA-7 ERROR CODE [118] (ABNORMALITY IN FUEL PUMP PRESSURE SENSOR SYSTEM HIGH LEVEL) 546
EA-8 ERROR CODE [119] (ABNORMALITY IN FUEL PUMP PRESSURE SENSOR SYSTEM LOW LEVEL) 547
EA-9 ERROR CODE [121] (ABNORMALITY IN ENGINE SPEED SENSOR 1 SYSTEM) 548
EA-10 ERROR CODE [122] (ABNORMALITY IN BOOST PRESSURE SENSOR SYSTEM HIGH LEVEL) 549
EA-11 ERROR CODE [123] (ABNORMALITY IN BOOST PRESSURE SENSOR SYSTEM LOW LEVEL) 550
EA-12 ERROR CODE [131] (ABNORMALITY IN ACCELERATOR SENSOR SYSTEM HIGH LEVEL) 551
EA-13 ERROR CODE [132] (ABNORMALITY IN ACCELERATOR SENSOR SYSTEM LOW LEVEL) 552
EA-14 ERROR CODE [135] (ABNORMALITY IN OIL PRESSURE SENSOR SYSTEM HIGH LEVEL) 553
EA-15 ERROR CODE [141] (ABNORMALITY IN OIL PRESSURE SENSOR SYSTEM LOW LEVEL) 554
EA-16 ERROR CODE [143] (ABNORMAL DROP IN OIL PRESSURE (LEVEL 1)) 555
EA-17 ERROR CODE [144] (ABNORMALITY IN COOLANT TEMPERATURE SENSOR SYSTEM HIGH LEVEL) 556
EA-18 ERROR CODE [145] (ABNORMALITY IN COOLANT TEMPERATURE SENSOR SYSTEM LOW LEVEL) 557
EA-19 ERROR CODE [151] (ABNORMAL RISE IN COOLANT TEMPERATURE) 557
EA-20 ERROR CODE [153] (ABNORMALITY IN INTAKE AIR TEMPERATURE SENSOR SYSTEM HIGH LEVEL) 558
EA-21 ERROR CODE [154] (ABNORMALITY IN INTAKE AIR TEMPERATURE SENSOR SYSTEM LOW LEVEL) 558
EA-22 ERROR CODE [221] (ABNORMALITY IN ATMOSPHERIC PRESSURE SENSOR SYSTEM HIGH LEVEL) 559
EA-23 ERROR CODE [222] (ABNORMALITY IN ATMOSPHERIC PRESSURE SENSOR SYSTEM LOW ) 560
EA-24 ERROR CODE [234] (OVERSPEED) 562
EA-25 ERROR CODE [254] (ABNORMALITY IN FUEL SHUT-OFF VALVE SYSTEM VOLTAGE) 563
EA-26 ERROR CODE [259] (ABNORMALITY IN FUEL SHUT-OFF VALVE) 564
EA-27 ERROR CODE [261] (ABNORMAL RISE IN FUEL TEMPERATURE) 564
EA-28 ERROR CODE [263] (ABNORMALITY IN FUEL TEMPERATURE SENSOR SYSTEM HIGH LEVEL) 565
EA-29 ERROR CODE [265] (ABNORMALITY IN FUEL TEMPERATURE SENSOR SYSTEM LOW LEVEL) 565
EA-30 ERROR CODE [316] (ABNORMALITY IN FUEL PUMP ACTUATOR SYSTEM CURRENT) 566
EA-31 ERROR CODE [318] (ABNORMALITY IN FUEL PUMP ACTUATOR) 567
EA-32 ERROR CODE [343] (ABNORMALITY IN CONTROLLER INTERNAL COMMUNICATION) 567
EA-33 ERROR CODE [346] (ABNORMALITY IN CONTROLLER POWER DOWN) 568
EA-34 ERROR CODE [384] (ABNORMALITY IN PREHEATING HEATER CONTROL SYSTEM) 569
EA-35 ERROR CODE [415] (ABNORMAL DROP IN OIL PRESSURE (LEVEL 2)) 570
EA-36 ERROR CODE [423] (ABNORMALITY IN TIMING RAIL PRESSURE SENSOR SYSTEM IN RANGE) 571
EA-37 ERROR CODE [431] (ABNORMALITY 1 IN IDLING VALIDATION SWITCH SYSTEM) 573
EA-38 ERROR CODE [432] (IDLE VALIDATION PROCESS ERROR) 575
EA-39 ERROR CODE [441] (ABNORMALITY IN BATTERY VOLTAGE LOW LEVEL) 577
EA-40 ERROR CODE [442] (ABNORMALITY IN BATTERY VOLTAGE HIGH LEVEL) 577
EA-41 ERROR CODE [451] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR SYSTEM HIGH LEVEL) 578
EA-42 ERROR CODE [452] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR SYSTEM LOW LEVEL) 579
EA-43 ERROR CODE [455] (ABNORMALITY IN FUEL RAIL ACTUATOR SYSTEM CURRENT) 580
EA-44 ERROR CODE [467] (ABNORMALITY IN TIMING RAIL ACTUATOR CONTROL) 581
EA-45 ERROR CODE [468] (ABNORMALITY IN FUEL RAIL ACTUATOR CONTROL) 581
EA-46 ERROR CODE [514] (ABNORMALITY IN FUEL RAIL ACTUATOR) 581
EA-47 ERROR CODE [527] (ABNORMALITY IN DUAL OUTPUT SOLENOID A SYSTEM) 582
EA-48 ERROR CODE [551] (ABNORMALITY 2 IN IDLE VALIDATION SWITCH SYSTEM) 582
EA-49 ERROR CODE [554] (ABNORMALITY IN FUEL RAIL PRESSURE SENSOR IN RANGE) 583
TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE) 585
ELECTRICAL CIRCUIT DIAGRAM FOR MAIN MONITOR 588
ELECTRICAL CIRCUIT DIAGRAM FOR LAMP AND HORN 592
M- 1 MAIN MONITOR DOES NOT WORK 593
M- 2 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED IMMEDIATELY, ALL LAMPS STAY LIGHTED UP 594
M- 3 SPEEDOMETER DISPLAY DOES NOT WORK PROPERLY 595
M- 4 ABNORMALITY IN SHIFT INDICATOR 596
M- 5 HIGH BEAM DISPLAY DOES NOT LIGHT UP 599
M- 6 TURN SIGNAL DISPLAY DOES NOT LIGHT UP 600
M- 7 ABNORMALITY IN PARKING LAMP DISPLAY 601
M- 8 ABNORMALITY IN PREHEATING DISPLAY 602
M- 9 NIGHT LIGHTING OF MONITOR DOES NOT LIGHT UP 605
M-10 ABNORMALITY IN FRONT WORKING LAMP 606
M-11 ABNORMALITY IN REAR WORKING LAMP 608
M-12 ABNORMALITY IN TRANSMISSION CUT-OFF 610
M-13 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING 612
M-14 WHEN PARKING BRAKE DRAGGING WARNING IS GIVEN, BUZZER AND CAUTION LAMP ARE ACTUATED CONTINUOUSLY, OR THEY ARE NOT ACTUATED 613
M-15 ABNORMALITY IN BUZZER 614
M-16 CONDITION OF MONITOR SWITCHES IS NOT STORED IN MEMORY 615
M-17 ABNORMALITY IN FAILURE DISPLAY MODE 616
M-18 ABNORMALITY IN EMERGENCY STEERING DISPLAY 617
M-19 ABNORMALITY IN AUTO-GREASING SYSTEM 618
M-20 ABNORMALITY IN ECSS SYSTEM 620
M-21 FAILURE CODE IS NOT SENT TO MAIN MONITOR (ABNORMALITY IN NETWORK) 624
TROUBLESHOOTING OF MAINTENANCE MONITOR SYSTEM (K MODE) 625
ELECTRICAL CIRCUIT DIAGRAM FOR MAINTENANCE MONITOR 626
K- 1 WHEN STARTING SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR DO NOT LIGHT UP FOR 3 SECONDS　MAINTENANCE MONITOR DOES NOT WORK 630
K- 2 WHEN STARTING SWITCH IS TURNED ON, ALL LAMPS ON MAINTENANCE MONITOR LIGHT UP BUT DO NOT GO OUT EVEN AFTER 3 SECONDS 631
K- 3 WHEN ENGINE IS STARTED IMMEDIATELY AFTER STARTING SWITCH IS TURNED ON WITHIN 3 SECONDS, NO LAMPS ON MAINTENANCE MONITOR GO OUT 632
K- 4 WHEN ENGINE IS STOPPED AND STARTING SWITCH IS TURNED ON, CHECK ITEM DISPLAY FLASHES 633
K- 5 WHEN ENGINE IS STOPPED AND STARTING SWITCH IS TURNED ON, CAUTION ITEM DISPLAY FLASHES 635
K- 6 CAUTION ITEM DISPLAY IS FLASHING, BUT CAUTION BUZZER DOES NOT SOUND 641
K- 7 NO MONITOR DISPLAY LIGHTS UP, BUT CAUTION BUZZER SOUNDS 642
K- 8 CAUTION ITEM DISPLAY IS FLASHING, BUT CENTRAL CHECK LAMP OR CENTRAL CAUTION LAMP DOES NOT FLASH 643
K- 9 NO MAINTENANCE MONITOR DISPLAY LIGHTS UP, BUT CENTRAL CHECK LAMP OR CENTRAL CAUTION LAMP LIGHTS UP 644
K-10 ONLY NIGHT LIGHTING OF MONITOR DOES NOT LIGHT UP WHEN LAMP SWITCH IS TURNED ON 645
K-11 NIGHT LIGHTING OF MONITOR LIGHTS UP EVEN WHEN LAMP SWITCH IS OFF 646
K-12 SERVICE METER DOES NOT WORK 647
K-13 SERVICE METER IS RUNNING EVEN WHEN ENGINE IS STOPPED 647
K-14 ABNORMALITY IN GAUGES 648
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE) 651
ELECTRICAL CIRCUIT DIAGRAM FOR POWER SUPPLY, ENGINE STARTING, ENGINE STOPPING, APS SYSTEM 654
ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION AND PARKING BRAKE 656
ELECTRICAL CIRCUIT DIAGRAM FOR LAMP AND HORN 657
ELECTRICAL CIRCUIT DIAGRAM FOR BOOM KICK-OUT AND BUCKET POSITIONER 658
E-1 ENGINE DOES NOT START 660
E-2 ENGINE DOES NOT STOP (SERIAL NO ; 50001 – 52000) 676
E-3 ENGINE STOP WHEN MACHINE IS TRAVELING (SERIAL NO : 50001 – 52000) 676
E-4A ABNORMALITY IN APS SYSTEM (SERIAL NO 50001 – 52000) 678
E-4B PREHEATING FAULT (SERIAL NO : 520001 AND UP) 687
E-5 PARKING BRAKE DOES NOT HAVE EFFECT 689
E-6 PARKING BRAKE IS APPLIED WHEN MACHINE IS TRAVELING 690
E-7 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED ON 692
E-8 TRANSMISSION DOES NO CHANGE TO NEUTRAL WHEN PARKING BRAKE IS APPLIED, BUT PARKING BRAKE WORKS NORMALLY 692
E-9 TRANSMISSION DOES NOT WORK PROPERLY 694
E-10 KICK-DOWN SWITCH DOES NOT WORK 718
E-11 KICK-DOWN WORKS ONLY WHEN KICK-DOWN SWITCH IS BEING TURNED ON 721
E-12 KICK-DOWN ALWAYS WORKS 722
E-13 KICK-DOWN SWITCH WORK EVEN WHEN TRAVELING FORWARD IN 2ND 724
E-14 BOOM KICK-DOWN DOES NOT WORK 726
E-15 DEFECTIVE BUCKET POSITIONER 730
E-16 POWER WINDOW DOES NOT WORK 733
E-17 ABNORMALITY IN FRONT WORKING LAMP 736
E-18 ABNORMALITY IN REAR WORKING LAMP 736
E-19 ABNORMALITY IN TRANSMISSION CUT-OFF 736
E-20 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING 736
E-21 ABNORMALITY IN BUZZER 736
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE) 737
H-1 MACHINE DOES NOT START 738
H-2 TRAVEL SPEED IS SLOW, OR LACKS POWER IN ALL SPEED RANGES 739
H-3 EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR 740
H-4 TORQUE CONVERTER OIL TEMPERATURE IS HIGH 741
H-5 STEERING WHEEL DOES NOT TURN 742
H-6 STEERING DOES NOT TURN [MACHINE WITH JOYSTICK] 743
H-7 TURNING, RESPONSE OF STEERING IS POOR 744
H-8 TURNING, RESPONSE OF STEERING IS POOR [MACHINE WITH JOYSTICK] 746
H-9 STEERING IS HEAVY 748
H-10 JOYSTICK IS HEAVY [MACHINE WITH JOYSTICK] 748
H-11 STEERING WHEEL SHAKES OR JERKS 749
H-12 STEERING SHAKES OR THERE IS EXCESSIVE SHOCK [MACHINE WITH JOYSTICK] 750
H-13 TURNING RADIUS IS DIFFERENT BETWEEN LEFT AND RIGHT AT MAXIMUM STEERING 750
H-14 WHEEL BRAKES DO NOT WORK OR BRAKING EFFECT IS POOR 752
H-15 WHEEL BRAKES ARE NOT RELEASED OR BRAKES DRAG 754
H-16 PARKING BRAKE DOES NOT WORK OR BRAKING EFFECT IS POOR 755
H-17 PARKING BRAKE IS NOT RELEASED OR BRAKE DRAGS (INCLUDING EMERGENCY RELEASE SYSTEM) 756
H-18 NEITHER LIFT ARM NOR BUCKET MOVE 757
H-19 BOTH LIFT ARM AND BUCKET ARE SLOW OR LACK POWER 758
H-20 LIFT ARM DOES NOT MOVE 759
H-21 LIFT ARM DOES NOT MOVE [MACHINES WITH REMOTE LIFT ARM CONTROL] 760
H-22 LIFT ARM IS SLOW OR LIFT ARM LACKS POWER 761
H-23 LIFT ARM IS SLOW OR LIFT ARM LACKS POWER [MACHINES WITH REMOTE LIFT ARM CONTROL] 762
H-24 LIFT ARM CANNOT BE SET TO FLOAT OR CANNOT BE RELEASED FROM FLOAT 763
H-25 LIFT ARM DROPS MOMENTARILY WHEN CONTROL LEVER IS OPERATED FROM HOLD TO RAISE 763
H-26 REMOTE LIFT ARM CONTROL DOES NOT WORK [MACHINES WITH REMOTE LIFT ARM CONTROL] 764
H-27 EXCESSIVE HYDRAULIC DRIFT OF LIFT ARM 765
H-28 BUCKET DOES NOT MOVE 766
H-29 BUCKET IS SLOW OR LACKS POWER 767
H-30 EXCESSIVE HYDRAULIC DRIFT OF BUCKET 768
H-31 ECSS DOES NOT WORK, AND THERE IS PITCH ING AND BOUNCING [MACHINES WITH ECSS] 769
TROUBLEHSHOOTING OF TRANSMISSION CONTROL SYSTEM (T MODE)(ONLY FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL) 771
METHOD OF DISPLAYING ACTION CODE AND FAILURE CODE 773
JUDGEMENT TABLE FOR TRANSMISSION CONTROL SYSTEM 774
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS, AND PROBLEMS ON MACHINE 776
ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION CONTROL SYSTEM 780
T-1 FAILURE CODE [10] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN BACKUP LAMP RELAY) IS DISPLAYED 784
T-2 FAILURE CODE [12] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN F SOLENOID) IS DISPLAYED 785
T-3 FAILURE CODE [13] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN R SOLENOID) IS DISPLAYED 786
T-4 FAILURE CODE [14] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 1ST SOLENOID) IS DISPLAYED 787
T-5 FAILURE CODE [15] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 2ND SOLENOID) IS DISPLAYED 788
T-6 FAILURE CODE [16] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 3RD SOLENOID) IS DISPLAYED 789
T-7 FAILURE CODE [17] (SHORT CIRCUIT, DISCONNECTION, OR SHORT CIRCUIT WITH POWER SUPPLY IN 4TH SOLENOID) IS DISPLAYED 790
T-8 FAILURE CODE [19] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED 791
T-9 FAILURE CODE [20] (SHORT CIRCUIT, OR DISCONNECTION IN DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED 792
T-10 FAILURE CODE [21] (SHORT CIRCUIT, OR DISCONNECTION IN SHIFT SWITCH SYSTEM) IS DISPLAYED 796
T-11 FAILURE CODE [22] (DISCONECTION IN TRAVEL SPEED SENSOR) IS DISPLAYED 799
T-12 FAILURE CODE [23] (SHORT CIRCUIT, OR DISCONNECTION IN ENGINE SPEED SENSOR SYSTEM) IS DISPLAYED 800
T-13 SHIFT-UP DOES NOT WORK 803
T-14 SHIFT-DOWN DOES NOT WORK 803
T-15 TRANSMISSION CUTOFF DOES NOT WORK OR STAYS WORKING 804
T-16 NEUTALIZER DOES NOT WORK OR STAYS WORKING 805
T-17 BUZZER DOES NOT WORK 806
T-18 ABNORMALITY IN NETWORK SYSTEM 807
T-19 ABNORMALITY IN TRANSMSSION CONTORLLER POWER SUPPLY 808
T-20 SHORT CIRCUIT IN TRAVEL SPEED SENSOR SYSTEM 809
T-21 ABNORMALITY IN MACHINE SELECTION WIRING HARNESS 810
TROUBLESHOOTING OF JOYSTICK STEERING SYSTEM (J MODE)(ONLY FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL) 811
JUDGEMENT TABLE FOR JOYSTICK CONTROL 812
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE 814
ELECTRICAL CIRCUIT DIAGRAM FOR JOYSTICK STEERING SYSTEM 818
J-1 FAILURE CODE [56] (SHORT CIRCUIT, OR DISCONNECTION IN CAUTION RELAY OUTPUT) IS DISPLAYED 820
J-2 FAILURE CODE [57] (SHORT CIRCUIT IN STEERING RIGHT SOLENOID (DETECTED WHEN SIGNAL IS OUTPUT)) IS DISPLAYED 821
J-3 FAILURE CODE [58] (SHORT CIRCUIT IN STEERING LEFT SOLENOID (DETECTED WHEN SIGNAL IS OUTPUT)) IS DISPLAYED 822
J-4 FAILURE CODE [59] (SHORT CIRCUIT IN STEERING RIGHT SOLENOID (POWER SUPPLY SIDE)) IS DISPLAYED 823
J-5 FAILURE CODE [60] (SHORT CIRCUIT IN STEERING LEFT SOLENOID (POWER SUPPLY SIDE)) IS DISPLAYED 824
J-6 FAILURE CODE [61] (SHORT CIRCUIT, OR DISCONNECTION IN STEERING SOLENOID CUT RELAY OUTPUT) IS DISPLAYED 825
J-7 FAILURE CODE [62] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK STEERING NEUTRAL CIRCUIT) IS DISPLAYED 826
J-8 FAILURE CODE [63] (SHORT CIRCUIT, OR DISCONNECTION IN JOYSTICK STEERING POTENTIOMETER) IS DISPLAYED 827
J-9 ABNORMALITY IN POWER SUPPLY, OR POWER SUPPLY VOLTAGE 828
J-10 ABNORMALITY IN JOYSTICK STEERING ON-OFF CIRCUIT 829
J-11 DISCONNECTION IN STEERING RIGHT SOLENOID 830
J-12 DISCONNECTION IN STEERING LEFT SOLENOID 831
TROUBLESHOOTING OF ECSS (ELECTRONICALLY CONTROLLED SUSPENSITON SYSTEM) (D MODE) 833
ACTION TAKEN BY TRANSMISSION CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE 834
ELECTRICAL CIRCUIT DIAGRAM FOR ECSS 838
D-1 ECSS DOES NOT WORK 841
D-2 ECSS CANNOT BE CANCELED 855
30 DISASSEMBLY AND ASSEMBLY 857
METHOD OF USING MANUAL 859
PRECAUTIONS WHEN CARRYING OUT OPERATION 860
SPECIAL TOOL LIST 862
SKETCHES OF SPECIAL TOOLS 872
STARTING MOTOR 883
ALTERNATOR 884
ENGINE OIL COOLER (SERIAL NO : 50001 – 52000) 887
FUEL INJECTION PUMP (SERIAL NO : 50001 – 52000) 888
WATER PUMP (SERIAL NO : 50001 – 52000) 889
NOZZLE HOLDER (SERIAL NO : 50001 – 52000) 890
TURBOCHARGER (SERIAL NO : 50001 – 52000) 891
ENGINE FRONT SEAL (SERIAL NO : 50001 – 52000) 893
ENGINE REAR SEAL (SERIAL NO : 50001 – 52000) 895
CYLINDER HEAD (SERIAL NO : 50001 – 52000) 897
THERMOSTAT (SERIAL NO : 50001 – 52000) 904
AFTERCOOLER CORE (SERIAL NO : 50001 – 52000) 905
RADIATOR 907
RADIATOR (WITH SUCTION FAN) 914
ENGINE AND TORQUE CONVERTER ASSEMBLY 918
TORQUE CONVERTER 925
TRANSMISSION 953
TRANSMISSION VALVE 987
TRANSFER 988
CENTER SUPPORT 1008
DRIVE SHAFT 1015
FRONT AXLE 1021
FRONT DIFFERENTIAL 1023
REAR AXLE 1025
REAR DIFFERENTIAL 1029
DIFFERENTIAL GEAR 1031
LIMITED SLIP DIFFERENTIAL 1043
FINAL DRIVE 1069
ORBIT-ROLL 1078
STEERING CYLINDER 1079
STEERING VALVE 1085
CUT-OFF VALVE 1087
BRAKE VALVE 1088
BRAKE VALVE (R H ) 1089
BRAKE VALVE (L H ) 1093
SLACK ADJUSTER 1097
BRAKE 1100
HYDRAULIC PUMP 1108
HYDRAULIC TANK 1112
HYDRAULIC FILTER 1114
PPC VALVE 1115
WORK EQUIPMENT VALVE 1117
MAIN CONTROL VALVE 1120
DUMP CYLINDER 1127
LIFT CYLINDER 1129
LIFT CYLINDER AND DUMP CYLINDER 1131
CENTER HINGE PIN 1136
WORK EQUIPMENT 1144
BULKHEAD 1150
FLOOR FRAME 1152
COUNTERWEIGHT 1155
FUEL TANK 1156
CAB 1160
STOP VALVE 1163
ACCUMULATOR 1164
ACCUMULATOR CHARGE VALVE 1167
PARKING BRAKE SOLENOID VALVE 1168
DIVERTER VALVE 1169
EMERGENCY STEERING PUMP 1170
PARKING BRAKE 1171
PARKING BRAKE CALIPERS 1174
PARKING BRAKE PAD 1176
REAR TIRES 1177
AIR CONDITIONER COMPRESSOR 1178
AIR CONDITIONER CONDENSER 1180
RECEIVER TANK 1181
AIR CONDITIONER UNIT 1182
MONITOR 1184
40 MAINTENANCE STANDARD 1185
ENGINE MOUNT 1186
TRANSMISSION MOUNT 1188
TORQUE CONVERTER 1190
TORQUE CONVERTER REGULATOR VALVE (SERIAL NO : 52001 AND UP) 1193
TRANSMISSION 1196
TRANSFER 1200
TRANSMISSION CONTROL VALVE 1202
DRIVE SHAFT 1207
CENTER SUPPORT 1208
DIFFERENTIAL 1210
LIMITED SLIP DIFFERENTIAL (IF EQUIPPED) 1214
FINAL DRIVE 1218
AXLE MOUNT 1222
CENTER HINGE PIN 1224
STEERING COLUMN 1226
STEERING VALVE 1227
EMERGENCY STEERING PUMP 1228
DIVERTER VALVE 1229
STEERING CYLINDER MOUNT 1230
BRAKE VALVE 1231
SLACK ADJUSTER 1238
BRAKE 1240
PARKING BRAKE 1244
HYDRAULIC PUMP 1246
PPC VALVE 1252
CUT-OFF VALVE 1254
MAIN CONTROL VALVE 1256
HYDRAULIC CYLINDER 1258
WORK EQUIPMENT LINKAGE 1260
BUCKET 1262
BUCKET POSITIONER AND BOOM KICK-OUT 1263
ROPS CANOPY 1265
90 OTHERS 1267
ELECTRICAL CIRCUIT DIAGRAM 1269
FOR STANDARD MACHINE (SERIAL NO : 50001 – 52000) 1269
FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL (SERIAL NO : 50001 – 52000) 1277
FOR STANDARD MACHINE (SERIAL NO : 52001 AND UP) 1285
FOR MACHINE WITH JOYSTICK AND AUTOMATIC SHIFT CONTROL (SERIAL NO : 52001 AND UP) 1295

DESCRIPTION:

Komatsu WA600-3 Wheel Loader Shop Manual SEBM013222 – PDF DOWNLOAD 

MACHINE MODEL              SERIAL NUMBER
WA600-3                                   50001 and up
WA600-3D (TBG SPEC.)        50001 and up

GENERAL PRECAUTIONS :

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

PREPARATIONS FOR WORK:

PRECAUTIONS DURING WORK :

S.V 26/12/24