Komatsu Wheel Loader WA430 Factory Service & Shop Manual
Catalog:
Model:
Complete workshop repair service manual with electrical wiring diagrams for Komatsu Wheel Loader WA430-5, WA430-6. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.
This Komatsu Wheel Loader WA430-5, WA430-6 service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.
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EXCERPT:
TABLE OF CONTENTS
01 GENERAL . . . . . . . 01-1
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD . . . . 10-1
20 STANDARD VALUE TABLES . . . . . . . . . . 20-1
30 TESTING AND ADJUSTING . . . . 30-1
40 TROUBLESHOOTING. . . . . . . 40-1
50 DISASSEMBLY AND ASSEMBLY. . . . . . . 50-1
90 DIAGRAMS AND SCHEMATICS. . . . . . . . 90-1
...
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD POWER TRAIN SYSTEM
Operation
When traveling in torque converter range
• When traveling in torque converter range, current is not supplied to proportional solenoid (1).
• Pressure control valve (3) drains the oil from clutch port (A) through drain port (T), and lockup clutch is “released”.
• Also at this time, fill switch (5) is turned “OFF” because oil pressure is not applied to pressure detection valve (4).
When traveling in direct range (Torque converter travel → direct travel)
★ During filling
• When traveling in direct (lockup) range, current is supplied to proportional solenoid (1), the oil pressure force balanced with the solenoid force is applied to chamber (B) and pushes pressure control valve (3) to the left. As a result, pump port (P) and clutch port (A) are opened and oil starts filling the clutch.
• If the clutch is filled with oil, oil pressure detection valve (4) is operated, and fill switch (5) is turned ON.
...
SEBM025406 - Wheel Loader WA430-5 Shop Manual...2
COVER...2
CONTENTS...3
01 GENERAL...30
GENERAL ASSEMBLY DRAWING...31
SPECIFICATIONS...32
WEIGHT TABLE...36
LIST OF LUBRICANT AND COOLANT...38
10 STRUCTURE AND FUNCTION,MAINTENANCE STANDARD...40
COOLING SYSTEM...41
ENGINE MOUNT, TRANSMISSION MOUNT...42
POWER TRAIN...43
POWER TRAIN SYSTEM DIAGRAM...44
DRIVE SHAFT (PROPELLER SHAFT)...47
TORQUE CONVERTER,TRANSMISSION PIPING...48
TORQUE CONVERTER...49
TRANSMISSION...57
TRANSMISSION CONTROL VALVE...73
AXLE...91
DIFFERENTIAL...93
FINAL DRIVE...105
AXLE MOUNTING,CENTER HINGE PIN...111
STEERING PIPING...115
STEERING COLUMN,ORBIT-ROLL...116
STEERING VALVE...117
ORBIT-ROLL VALVE...132
STOP VALVE...136
STEERING PUMP, SWITCH PUMP...137
EMERGENCY STEERING PUMP(OP)...139
EMERGENCY STEERING MOTOR(OP)...140
STEERING CYLINDER...141
JOYSTICK STEERING LEVER (OP)...143
STEERING LEVER (OP)...144
STEERING SWITCH VALVE (OP)...146
BRAKE PIPING...147
BRAKE VALVE...149
CHARGE VALVE...156
ACCUMULATOR (FOR BRAKE)...160
BRAKE...163
PARKING BRAKE CONTROL...168
PARKING BRAKE...169
PARKING BRAKE SOLENOID VALVE...171
PARKING BRAKE EMERGENCY RELEASE VALVE...173
HYDRAULIC PIPING...175
WORK EQUIPMENT CONTROL LEVER...179
HYDRAULIC TANK...181
TORQUE CONVERTER CHARGING,WORK EQUIPMENT,AND PILOT CONTROL PUMPS...183
PPC RELIEF VALVE...185
E.S.S.S .VALVE (OP)...187
WORK EQUIPMENT CONTROL VALVE...189
WORK EQUIPMENT PPC VALVE...207
PPC VALVE (FOR MULTI FUNCTION MONO LEVER)...213
OPERATION...215
EPC SOLENOID VALVE(OP)...219
SHUT OFF VALVE (OP)...222
ATTACHMENT PPC VALVE(OP)...223
COOLING FAN MOTOR...227
COOLING FAN MOTOR DRIVE PUMP...233
WORK EQUIPMENT LINKAGE...241
BUCKET...243
BUCKET POSITIONER,LIFT ARM KICK-OUT...245
WORK EQUIPMENT CYLINDER...251
CAB...252
AIR CONDITIONER (OP)...253
MACHINE MONITORING SYSTEM...254
MACHINE MONITOR...261
TRANSMISSION CONTROL SYSTEM...328
TRANSMISSION CONTROLLER...357
WORK EQUIPMENT CONTROL SYSTEM (OP)...359
WORK EQUIPMENT CONTROLLER...375
ELECTRIC TRANSMISSION CONTROL...377
KICK DOWN,HOLD SWITCH...381
ENGINE STARTING CIRCUIT...382
ENGINE STOP CIRCUIT...384
PREHEATING CIRCUIT...385
ENGINE POWER MODE SELECTOR CIRCUIT ...386
PARKING BRAKE CIRCUIT...387
SENSORS...391
20 TESTING AND ADJUSTING...402
TESTING AND ADJUSTING DATA...403
STANDARD VALUE TABLE FOR CHASSIS...404
TESTING AND ADJUSTING...412
TOOLS FOR TESTING,ADJUSTING,AND TROUBLESHOOTING...413
MEASURING ENGINE SPEED...414
MEASURING EXHAUST COLOR...416
MEASURING EXHAUST TEMPERATURE...417
ADJUSTING VALVE CLEARANCE...419
MEASURING COMPRESSION PRESSURE...420
MEASURING BLOW-BY PRESSURE...421
MEASURING ENGINE OIL PRESSURE...422
MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)...423
TESTING AND ADJUSTING FUEL INJECTION TIMING...424
ADJUSTING ENGINE SPEED SENSOR...426
BLEEDING AIR FROM FUEL CIRCUIT...427
ADJUSTING ENGINE STOP MOTOR LEVER...428
ADJUSTING ACCELERATOR PEDAL ...430
ADJUSTING TRANSMISSION SPEED SENSOR...432
TESTING AND ADJUSTING POWER TRAIN OIL PRESSURE...433
DRAWING OF SPECIAL TOOL...437
PROCEDURE FOR FLUSHING TORQUE CONVERTER,TRANSMISSION HYDRAULIC CIRCUIT...438
PROCEDURE FOR MOVING MACHINE WHEN TRANSMISSION VALVE FAILS...439
TESTING AND ADJUSTING STEERING CONTROL...441
TESTING AND ADJUSTING STEERING OIL PRESSURE...442
TESTING HYDRAULIC FAN...444
MEASURING BRAKE OIL PRESSURE...445
TESTING WEAR OF WHEEL BRAKE DISC...447
BLEEDING AIR FROM BRAKE CIRCUIT...448
TESTING WEAR OF PARKING BRAKE DISC...449
MANUAL RELEASE METHOD FOR PARKING BRAKE...450
TESTING AND ADJUSTING ACCUMULATOR CHARGE PRESSURE...451
TESTING AND ADJUSTING WORKING EQUIPMENT PPC OIL PRESSURE...453
TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE...455
TESTING AND ADJUSTING BUCKET POSITIONER...457
TESTING AND ADJUSTING LIFT ARM KICK-OUT...458
CHECKING PROXIMITY SWITCH ACTUATION PILOT LAMP...459
ADJUSTING MACHINE MONITOR...460
TESTING AND ADJUSTING LOAD METER...463
BLEEDING AIR...467
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT...468
RELEASING REMAINING PRESSURE IN TRAVEL DAMPER CIRCUIT...468
PM CLINIC INSPECTION CHART...470
TROUBLESHOOTING...472
POINTS TO REMEMBER WHEN TROUBLESHOOTING...473
SEQUENCE OF EVENTS IN TROUBLESHOOTING...474
PRECAUTIONS WHEN CARRYING OUT MAINTENANCE...475
CHECKS BEFORE TROUBLESHOOTING...483
SPECIAL FUNCTIONS OF MACHINE MONITOR...485
CATEGORIES,PROCEDURE,AND METHOD OF USING TROUBLESHOOTING CHARTS...520
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS...529
T-ADAPTER TABLE...552
CONNECTOR TYPES AND MOUNTING LOCATIONS...555
CONNECTOR LAYOUT DRAWING...563
TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM(TM MODE)...572
TRANSMISSION CONTROL SYSTEM DIAGRAM...575
ERROR CODE [1500L1] (DOUBLE ENGAGEMENT DETECTED) IS DISPLAYED...578
ERROR CODE [15SAL1] (F_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...579
ERROR CODE [15SALH] (F_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...580
ERROR CODE [15SBL1] (R_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...581
ERROR CODE [15SBLH] (R_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...582
ERROR CODE [15SEL1] (1ST_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...583
ERROR CODE [15SELH] (1ST_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...584
ERROR CODE [15SFL1] (2ND_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...585
ERROR CODE [15SFLH] (2ND_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...586
ERROR CODE [15SGL1] (3RD_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...587
ERROR CODE [15SGLH] (3RD_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...588
ERROR CODE [15SHL1] (4TH_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...589
ERROR CODE [15SHLH] (4TH_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...590
ERROR CODE [15SJL1] (LOCKUP_ECMV (E-POCV) FILL SWITCH SYSTEM SHORT-CIRCUITED) IS DISPLAYED...591
ERROR CODE [15SJLH] (LOCKUP_ECMV (E-POCV) FILL SWITCH SYSTEM DISCONNECTED) IS DISPLAYED...592
ERROR CODE [989F00] (TRANSMISSION PROTECTION CAUTION) IS DISPLAYED...593
ERROR CODE [B@C7NS] (REAR BRAKE COOLING OIL OVERHEAT) IS DISPLAYED...594
ERROR CODE [D150KA] (EMERGENCY STEERING RELAY OUTPUT SYSTEM DISCONNECTED) IS DISPLAYED...595
ERROR CODE [D150KB] (EMERGENCY STEERING RELAY OUTPUT SYSTEM GROUNDED) IS DISPLAYED...596
ERROR CODE [D160KA] (BACKUP LAMP RELAY OUTPUT SYSTEM DISCONNECTED) IS DISPLAYED...597
ERROR CODE [D160KB] (BACKUP LAMP RELAY OUTPUT SYSTEM GROUNDED) IS DISPLAYED...598
ERROR CODE [D191KA] (NEUTRAL SAFETY RELAY OUTPUT SYSTEM DISCONNECTED) IS DISPLAYED...599
ERROR CODE [D191KB] (NEUTRAL SAFETY RELAY OUTPUT SYSTEM GROUNDED) IS DISPLAYED...601
ERROR CODE [D192KA] (TRAVEL DAMPER RELAY OUTPUT SYSTEM DISCONNECTED) IS DISPLAYED...603
ERROR CODE [D192KB] (TRAVEL DAMPER RELAY OUTPUT SYSTEM GROUNDED) IS DISPLAYED...604
ERROR CODE [D198KB] (GROUND FAULT IN LOW TEMPERATURE BYPASS RELAY SYSTEM) IS DISPLAYED [*]...605
ERROR CODE [D198KY] (HOT-SHORT IN LOW-TEMPERATURE BYPASS RELAY SYSTEM) IS DISPLAYED...606
ERROR CODE [DAQ0KK] (CONTROLLER POWER SUPPLY VOLTAGE LOWERED) IS DISPLAYED...607
ERROR CODE [DAQ2KK] (DEFECTIVE SOLENOID POWER SUPPLY SYSTEM) IS DISPLAYED...608
ERROR CODE [DAQ9KQ] (MODEL SELECTION SIGNAL MISMATCH) IS DISPLAYED...609
ERROR CODE [DDK3KA] (RIGHT FNR SWITCH SIGNAL NOT INPUT) IS DISPLAYED...611
ERROR CODE [DDK3KB] (MULTIPLE RIGHT FNR SWITCH SIGNAL INPUT) IS DISPLAYED...613
ERROR CODE [DDK4KA] (JOYSTICK FORWARD/REVERSE SWITCH SIGNAL IS NOT INPUT) IS DISPLAYED...615
ERROR CODE [DDK4KB] (MULTIPLE JOYSTICK FORWARD/REVERSE SWITCH SIGNALS ARE INPUT) IS DISPLAYED...617
ERROR CODE [DDK5LD] (SHORT CIRCUIT WITH POWER SOURCE IN JOYSTICK SHIFT_UP/SHIFT_DOWN SWITCH) IS DISPLAYED...619
ERROR CODE [DDK6KA] (FORWARD-REVERSE LEVER SIGNAL NOT INPUT) IS DISPLAYED...621
ERROR CODE [DDK6KB] (MULTIPLE FORWARD-REVERSE LEVER SIGNAL INPUT) IS DISPLAYED...623
ERROR CODE [DDS5KA] (STEERING PRESSURE SWITCH DISCONNECTED) IS DISPLAYED...625
ERROR CODE [DDS5KB] (STEERING PRESSURE SWITCH GROUNDED) IS DISPLAYED...626
ERROR CODE [DDT0L4] (MANUAL/AUTO-SHIFT SELECTOR SWITCH SELECTION FAILURE) IS DISPLAYED...627
ERROR CODE [DDT4LD] (GROUND FAULT OF TRANSMISSION CUT-OFF SETTING SWITCH) IS DISPLAYED...629
ERROR CODE [DDW9LD] (GROUND FAULT OF KICKDOWN SWITCH SYSTEM) IS DISPLAYED...631
ERROR CODE [DDWLLD] (GROUND FAULT OF HOLD SWITCH SYSTEM) IS DISPLAYED...633
ERROR CODE [DF10KA] (NO INPUT OF GEAR SHIFT LEVER SIGNAL) IS DISPLAYED...635
ERROR CODE [DF10KB] (INPUT OF MULTIPLE GEAR SHIFT LEVER SIGNALS NO INPUT OF GEAR SHIFT LEVER SIGNAL) IS DISPLAYED...637
ERROR CODE [DGF1KX] (TRANSMISSION OIL TEMPERATURE SENSOR SYSTEM FAILURE) IS DISPLAYED...639
ERROR CODE [DGR2KA] (REAR BRAKE OIL TEMPERATURE SENSOR SYSTEM DISCONNECTION) IS DISPLAYED...640
ERROR CODE [DGR2KB] (GROUND FAULT OF REAR BRAKE OIL TEMPERATURE SENSOR SYSTEM) IS DISPLAYED...641
ERROR CODE [DHT1KX] (TRANSMISSION CUT-OFF (LEFT BRAKE PRESSURE SENSOR) SIGNAL DISCONTINUITY) IS DISPLAYED...642
ERROR CODE [DLE2KA] (ENGINE REVOLUTION SENSOR SYSTEM DISCONTINUITY) IS DISPLAYED...643
ERROR CODE [DLE2LC] (ENGINE REVOLUTION SENSOR FAILURE) IS DISPLAYED...644
ERROR CODE [DLT3KA] (SPEED SENSOR TRANSMISSION OUTPUT SHAFT REVOLUTION SYSTEM DISCONTINUITY) IS DISPLAYED...645
ERROR CODE [DT20KB] (GROUND FAULT OF BUILT-IN INDICATOR LAMP SYSTEM OF TRANSMISSION CUT-OFF SWITCH) IS DISPLAYED...646
ERROR CODE [DW7BKA] (FAN PUMP REVERSE SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...647
ERROR CODE [DW7BKB] (FAN PUMP REVERSE SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...648
ERROR CODE [DW7CKA] (SWITCH PUMP CUT-OFF RELAY DISCONTINUITY) IS DISPLAYED...649
ERROR CODE [DW7CKB] (SWITCH PUMP CUT-OFF RELAY GROUND FAULT) IS DISPLAYED...650
ERROR CODE [DX16KA] (FAN PUMP EPC SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...651
ERROR CODE [DX16KB] (FAN PUMP EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...652
ERROR CODE [DXH1KA] (LOCK-UP CLUTCH_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...653
ERROR CODE [DXH1KB] (LOCK-UP CLUTCH_ECMV (E-POCV) SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...654
ERROR CODE [DXH4KA] (1ST_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...655
ERROR CODE [DXH4KB] (1ST_ECMV (E-POCV) SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...656
ERROR CODE [DXH5KA] (2ND_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...657
ERROR CODE [DXH5KB] (2ND_ECMV (E-POCV) SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...658
ERROR CODE [DXH6KA] (3RD_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...659
ERROR CODE [DXH6KB] (3RD_ECMV (E-POCV) SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...660
ERROR CODE [DXH7KA] (R_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...661
ERROR CODE [DXH7KB] (R_ECMV (E-POCV) SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...662
ERROR CODE [DXH8KA] (F_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...663
ERROR CODE [DXH8KB] (F_ECMV (E-POCV) SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...664
ERROR CODE [DXHHKA] (4TH_ECMV (E-POCV) SOLENOID SYSTEM DISCONTINUITY) IS DISPLAYED...665
ERROR CODE [DXHHKB] (4TH_ECMV (E-POCV) SOLENOID SYSTEM SHORT-CIRCUITING) IS DISPLAYED...666
ERROR CODE [DY30MA] (MOTOR-DRIVEN EMERGENCY STEERING PUMP FAILURE (MALFUNCTION IN MANUAL MODE))...667
ERROR CODE [DY30MC] (MOTOR-DRIVEN EMERGENCY STEERING PUMP FAILURE (MALFUNCTION IN MANUAL MODE))...669
TROUBLESHOOTING CODE[TM-1] DISCONTINUITY OR HOT SHORT-CIRCUITING OF KICKDOWN SWITCH SYSTEM...671
TROUBLESHOOTING CODE[TM-2] HOLD SWITCH SYSTEM DISCONTINUITY OR HOT SHORT-CIRCUITING...673
TROUBLESHOOTING CODE[TM-3] TORQUE CONVERTER LOCK-UP SWITCH SYSTEM FAILURE...675
TROUBLESHOOTING CODE[TM-4] NEUTRALIZER SIGNAL (PARKING BRAKE SWITCH SIGNAL) SYSTEM FAILURE...677
TROUBLESHOOTING CODE[TM-5] EMERGENCY STEERING SWITCH (MOTOR-DRIVEN EMERGENCY STEERING OPERATION SWITCH) SIGNAL SYSTEM FAILURE...679
TROUBLESHOOTING CODE[TM-6] TRANSMISSION CUT-OFF SWITCH SYSTEM DISCONTINUITY OR GROUND FAULT...681
TROUBLESHOOTING CODE[TM-7] TRANSMISSION CUT-OFF SETTING SWITCH SYSTEM DISCONTINUITY OR HOT SHORT-CIRCUITING...682
TROUBLESHOOTING CODE[TM-8] TRANSMISSION CUT-OFF (LEFT BRAKE SENSOR) SIGNAL SHORT-CIRCUITING...683
TROUBLESHOOTING CODE[TM-9a] JOYSTICK SHIFT_UP/SHIFT_DOWN SWITCH SYSTEM FAILURE (DISCONTINUITY OR GROUND FAULT)...684
TROUBLESHOOTING CODE[TM-9b] JOYSTICK ON/OFF CHANGE OVER SWITCH SYSTEM FAILURE...685
TROUBLESHOOTING CODE[TM-10] FNR SWITCH MODE CHANGE OVER SWITCH SYSTEM FAILURE...687
TROUBLESHOOTING CODE[TM-11] "STARTING SWITCH""C""(IGN_C) SIGNAL SYSTEM FAILURE...689
TROUBLESHOOTING CODE[TM-12] ENGINE POWER MODE SWITCH DISCONTINUITY OR GROUND FAULT...691
TROUBLESHOOTING CODE[TM-13] THE ENGINE POWER MODE CANNOT BE SELECTED...693
TROUBLESHOOTING CODE[TM-14] TRAVEL DAMPER NO/OFF SWITCH DISCONTINUITY OR GROUND FAULT [*]...695
TROUBLESHOOTING CODE[TM-15] HYDRAULIC FAN REVERSE SWITCH SIGNAL SYSTEM HOT SHORT-CIRCUITING OR DISCONTINUITY...696
TROUBLESHOOTING CODE[TM-16] MOTOR-DRIVEN EMERGENCY STEERING RELAY OUTPUT SYSTEM HOT SHORT-CIRCUITING...697
TROUBLESHOOTING CODE[TM-17] TRAVEL DAMPER RELAY OUTPUT SYSTEM HOT SHORT-CIRCUITING [*]...698
TROUBLESHOOTING CODE[TM-18] SWITCH PUMP CUT-OFF RELAY OUTPUT SYSTEM HOT SHORT-CIRCUITING...699
TROUBLESHOOTING CODE[TM-19] BACK LAMP RELAY OUTPUT SYSTEM HOT SHORT-CIRCUITING...700
TROUBLESHOOTING CODE[TM-20] NEUTRAL OUTPUT SYSTEM HOT SHORT-CIRCUITING...701
TROUBLESHOOTING CODE[TM-21] FECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...702
TROUBLESHOOTING CODE[TM-22] RECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...703
TROUBLESHOOTING CODE[TM-23] 1ST ECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...704
TROUBLESHOOTING CODE[TM-24] 2ND ECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...705
TROUBLESHOOTING CODE[TM-25] 3RD ECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...706
TROUBLESHOOTING CODE[TM-26] 4TH ECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...707
TROUBLESHOOTING CODE[TM-27] LOCK-UP ECMV (E-POCV) SOLENOID SYSTEM HOT SHORT-CIRCUITING...708
TROUBLESHOOTING CODE[TM-28] FAN PUMP EPC SOLENOID SYSTEM HOT SHORT-CIRCUITING...709
TROUBLESHOOTING CODE[TM-29] FAN REVERSE SOLENOID SYSTEM HOT SHORT-CIRCUITING...710
TROUBLESHOOTING CODE[TM-30] SPEED SENSOR (TRANSMISSION OUTPUT SHAFT REVOLUTION) SYSTEM FAILURE...711
TROUBLESHOOTING OF WORK EQUIPMENT CONTROL SYSTEM(WRK MODE)...712
WORK EQUIPMENT CONTROL SYSTEM DIAGRAM...715
ERROR CODE [D193KA] (DEFECTIVE JOYSTICK STEERING CUT RELAY SYSTEM (MAIN SYSTEM DISCONNECTED)) IS DISPLAYED...718
ERROR CODE [D193KB] (THE JOYSTICK SOLENOID CUT RELAY OUTPUT SYSTEM IS GROUNDED PROPERLY) IS DISPLAYED...719
ERROR CODE [DB90KK] (LOWERING WORK EQUIPMENT CONTROLLER POWER SUPPLY) IS DISPLAYED...720
ERROR CODE [DB92KK] (DEFECTIVE SOLENOID ELECTRIC POWER SUPPLY SYSTEM) IS DISPLAYED...721
ERROR CODE [DB95KX] (DEFECTIVE 5V ELECTRIC POWER SUPPLY SYSTEM) IS DISPLAYED...723
ERROR CODE [DD1ALD] (DEFECTIVE REMOTE POSITIONER UP SET SWITCH (GROUND FAULT)) IS DISPLAYED...725
ERROR CODE [DD1BLD] (DEFECTIVE REMOTE POSITIONER DOWN SET SWITCH (GROUND FAULT)) IS DISPLAYED...726
ERROR CODE [DFA0KM] (DEFECTIVE NEUTRAL CAUTION FOR JOYSTICK WORK EQUIPMENT LEVER) IS DISPLAYED...727
ERROR CODE [DK59KA] (DEFECTIVE LIFT ARM EPC LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...728
ERROR CODE [DK59KY] (DEFECTIVE LIFT ARM EPC LEVER POTENTIOMETER SYSTEM (MAIN SHORT CIRCUIT)) IS DISPLAYED...729
ERROR CODE [DK59L8] (DEFECTIVE LIFT ARM EPC POTENTIOMETER SYSTEM (DISPLACEMENT OF MAIN AND SUB-CIRCUIT)) IS DISPLAYED...730
ERROR CODE [DK5AKA] (DEFECTIVE LIFT ARM EPC LEVER POTENTIOMETER SYSTEM (DISCONNECTION OF MAIN) (DISCONNECTION, GROUND OF SUB)) IS DISPLAYED...731
ERROR CODE [DK5AKY] (DEFECTIVE LIFT ARM EPC LEVER POTENTIOMETER SYSTEM (SHORT SUB-CIRCUIT)) IS DISPLAYED...732
ERROR CODE [DK5BKA] (DEFECTIVE BUCKET EPC LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...733
ERROR CODE [DK5BKY] (DEFECTIVE BUCKET EPC LEVER POTENTIOMETER SYSTEM (MAIN SHORTED)) IS DISPLAYED...734
ERROR CODE [DK5BL8] (DEFECTIVE INPUT SIGNAL FOR BUCKET EPC LEVER POTENTIOMETER SYSTEM (DISPLACEMENT OF MAIN AND SUB-CIRCUIT)) IS DISPLAYED...735
ERROR CODE [DK5CKA] (DEFECTIVE BUCKET EPC LEVER POTENTIOMETER SYSTEM (SUB-CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...736
ERROR CODE [DK5CKY] (DEFECTIVE BUCKET EPC LEVER POTENTIOMETER SYSTEM (SHORT SUB-CIRCUIT)) IS DISPLAYED...737
ERROR CODE [DK5DKA] (DEFECTIVE 3RD VALVE LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...738
ERROR CODE [DK5DKY] (DEFECTIVE 3RD VALVE LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT SHORT CIRCUIT)) IS DISPLAYED...739
ERROR CODE [DK5DL8] (DEFECTIVE 3RD VALVE EPC LEVER POTENTIOMETER SYSTEM INPUT SIGNAL (DISPLACEMENT OF MAIN AND SUB-CIRCUIT)) IS DISPLAYED...740
ERROR CODE [DK5EKA] (DEFECTIVE 3RD VALVE EPC LEVER POTENTIOMETER SYSTEM (SUB-CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...741
ERROR CODE [DK5EKY] (DEFECTIVE 3RD VALVE EPC LEVER POTENTIOMETER SYSTEM (SHORT SUB-CIRCUIT)) IS DISPLAYED...742
ERROR CODE [DK5FKA] (DEFECTIVE JOYSTICK STEERING EPC LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT DISCONTINUITY OR GROUND FAULT)) IS DISPLAYED...743
ERROR CODE [DK5FKY] (DEFECTIVE JOYSTICK STEERING EPC LEVER POTENTIOMETER SYSTEM (MAIN CIRCUIT SHORTED)) IS DISPLAYED...744
ERROR CODE [DK5FKM] (JOYSTICK STEERING EPC LEVER NEUTRAL SYSTEM CAUTION) IS DISPLAYED...745
ERROR CODE [DK5FL8] (DEFECTIVE JOYSTICK STEERING EPC LEVER POTENTIOMETER SYSTEM INPUT SIGNAL (DEVIATION OF POSITIONAL SIGNALS OF MAIN AND SUB-CIRCUITS)) IS DISPLAYED...746
ERROR CODE [DG5GKA] (DEFECTIVE JOYSTICK STEERING EPC LEVER POTENTIOMETER SYSTEM (DISCONNECTION OR GROUND FAULT OF SUB-CIRCUIT)) IS DISPLAYED...747
ERROR CODE [DK5GKY] (DEFECTIVE JOYSTICK STEERING EPC LEVER POTENTIOMETER SYSTEM (SUB-CIRCUIT SHORT CIRCUIT)) IS DISPLAYED...748
ERROR CODE [DKA0KA] (DEFECTIVE LIFT ARM ANGLE SENSOR SYSTEM (DISCONNECTION OR GROUND FAULT)) IS DISPLAYED...749
ERROR CODE [DKA0KY] (DEFECTIVE LIFT ARM ANGLE SENSOR SYSTEM (SHORT CIRCUIT)) IS DISPLAYED...750
ERROR CODE [DLE2LC] (DEFECTIVE ENGINE SPEED SENSOR SYSTEM) IS DISPLAYED...751
ERROR CODE [DLT3LC] (DEFECTIVE TRANSMISSION OUTPUT AXIS SPEED SENSOR SYSTEM (DISCONNECTED)) IS DISPLAYED...752
ERROR CODE [DUM1KB] (REMOTE POSITIONER RAISE LAMP SYSTEM GROUND FAULT) IS DISPLAYED...753
ERROR CODE [DUM2KB] (REMOTE POSITIONER LOWER LAMP SYSTEM GROUND FAULT) IS DISPLAYED...754
ERROR CODE [DW4PKA] (DISCONNECTED LIFT ARM RAISE EPC SOLENOID SYSTEM) IS DISPLAYED...755
ERROR CODE [DW4PKB] (LIFT ARM RAISE EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...756
ERROR CODE [DW4QKA] (DISCONNECTED LIFT ARM LOWER EPC SOLENOID SYSTEM) IS DISPLAYED...757
ERROR CODE [DW4QKB] (LIFT ARM LOWER EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...758
ERROR CODE [DW4RKA] (DISCONNECTED BUCKET TILT EPC SOLENOID SYSTEM) IS DISPLAYED...759
ERROR CODE [DW4RKB] (BUCKET TILT EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...760
ERROR CODE [DW4SKA] (BUCKET DUMP EPC SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...761
ERROR CODE [DW4SKB] (BUCKET DUMP EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...762
ERROR CODE [DWM1KA] (WORK EQUIPMENT NEUTRAL LOCK SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...763
ERROR CODE [DWM1KB] (WORK EQUIPMENT NEUTRAL LOCK SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...764
ERROR CODE [DWN6KA] (LIFT ARM RAISE MAGNET DETENT SYSTEM DISCONNECTION) IS DISPLAYED...765
ERROR CODE [DWN6KB] (LIFT ARM RAISE MAGNET DETENT SYSTEM GROUND FAULT) IS DISPLAYED...766
ERROR CODE [DWN7KA] (LIFT ARM FLOATING MAGNET DETENT SYSTEM DISCONNECTION) IS DISPLAYED...767
ERROR CODE [DWN7KB] (LIFT ARM FLOATING MAGNET DETENT SYSTEM GROUND FAULT) IS DISPLAYED...768
ERROR CODE [DWN8KA] (BUCKET TILT MAGNET DETENT SYSTEM DISCONNECTION) IS DISPLAYED...769
ERROR CODE [DWN8KB] (BUCKET TILT MAGNET DETENT SYSTEM FAILURE (POWER SUPPLY SYSTEM GROUND FAULT)) IS DISPLAYED...770
ERROR CODE [DXHJKA] (3RD VALVE EXTENSION EPC SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...771
ERROR CODE [DXHJKB] (3RD VALVE EXTENSION EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...772
ERROR CODE [DXHKKA] (3RD VALVE RETRACTION EPC SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...773
ERROR CODE [DXHKKB] (3RD VALVE RETRACTION EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...774
ERROR CODE [DXHLKA] (JOYSTICK STEERING RIGHT-HAND EPC SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...775
ERROR CODE [DXHLKB] (JOYSTICK STEERING RIGHT-HAND EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...776
ERROR CODE [DXHMKA] (JOYSTICK STEERING LEFT-HAND EPC SOLENOID SYSTEM DISCONNECTION) IS DISPLAYED...777
ERROR CODE [DXHMKB] (JOYSTICK STEERING LEFT-HAND EPC SOLENOID SYSTEM GROUND FAULT) IS DISPLAYED...778
TROUBLESHOOTING CODE [WRK-1] DEFECTIVE LIFT ARM LOCK SWITCH SYSTEM...779
TROUBLESHOOTING CODE [WRK-2] DEFECTIVE REMOTE POSITIONER RAISE SETTING SWITCH SYSTEM...780
TROUBLESHOOTING CODE [WRK-3] DEFECTIVE REMOTE POSITIONER LOWER SETTING SWITCH SYSTEM...781
TROUBLESHOOTING CODE [WRK-4] DEFECTIVE REMOTE POSITIONER RAISE SELECTION SWITCH SYSTEM...783
TROUBLESHOOTING CODE [WRK-5] DEFECTIVE REMOTE POSITIONER LOWER ON/OFF SETTING SWITCH SYSTEM...785
TROUBLESHOOTING CODE [WRK-6] DEFECTIVE BUCKET CYLINDER PROXIMITY SWITCH SYSTEM...787
TROUBLESHOOTING CODE [WRK-7] DEFECTIVE BUCKET CYLINDER FULL STROKE DETECTION SWITCH SYSTEM...789
TROUBLESHOOTING CODE [WRK-8] DEFECTIVE SEMI-AUTOMATIC DIGGING HARD SELECTION SWITCH SYSTEM...790
TROUBLESHOOTING CODE [WRK-9] DEFECTIVE SEMI-AUTOMATIC DIGGING SOFT SELECTION SWITCH SYSTEM...791
TROUBLESHOOTING CODE [WRK-10] DEFECTIVE JOYSTICK ON/OFF SWITCH SYSTEM...793
TROUBLESHOOTING CODE [WRK-11] DEFECTIVE JOYSTICK STEERING SPEED HI/LO SWITCH SYSTEM...795
TROUBLESHOOTING CODE [WRK-12] DEFECTIVE JOYSTICK SOLENOID CUT RELAY OUTPUT SYSTEM...796
TROUBLESHOOTING CODE [WRK-13] HOT SHORT-CIRCUITED LIFT ARM RAISE MAGNET DETENT OUTPUT SYSTEM...797
TROUBLESHOOTING CODE [WRK-14] HOT SHORT-CIRCUITED LIFT ARM FLOATING MAGNET DETENT OUTPUT SYSTEM...798
TROUBLESHOOTING CODE [WRK-15] HOT SHORT-CIRCUITED BUCKET TILT MAGNET DETENT OUTPUT SYSTEM...799
TROUBLESHOOTING CODE [WRK-16] HOT SHORT-CIRCUITED WORK EQUIPMENT NEUTRAL LOCK SOLENOID OUTPUT SYSTEM...800
TROUBLESHOOTING CODE [WRK-17] HOT SHORT-CIRCUITED LIFT ARM RAISE EPC SOLENOID SYSTEM...801
TROUBLESHOOTING CODE [WRK-18] HOT SHORT-CIRCUITED LIFT ARM LOWER EPC SOLENOID SYSTEM...802
TROUBLESHOOTING CODE [WRK-19] HOT SHORT-CIRCUITED BUCKET TILT EPC SOLENOID SYSTEM...803
TROUBLESHOOTING CODE [WRK-20] HOT SHORT-CIRCUITED BUCKET DUMP EPC SOLENOID SYSTEM...804
TROUBLESHOOTING CODE [WRK-21] HOT SHORT-CIRCUITED 3 VALVES EXTENSION EPC SOLENOID SYSTEM...805
TROUBLESHOOTING CODE [WRK-22] HOT SHORT-CIRCUITED 3 VALVES RETRACTION EPC SOLENOID SYSTEM...806
TROUBLESHOOTING CODE [WRK-23] HOT SHORT-CIRCUITED JOYSTICK STEERING RIGHT EPC SOLENOID SYSTEM...807
TROUBLESHOOTING CODE [WRK-24] HOT SHORT-CIRCUITED JOYSTICK STEERING LEFT EPC SOLENOID SYSTEM...808
TROUBLESHOOTING CODE [WRK-25] DEFECTIVE BUCKET POSITIONER,LIFT ARM KICK-OUT AND FLOATING HOLDING FUNCTION...809
TROUBLESHOOTING CODE [WRK-26] DEFECTIVE LIFT ARM KICK-OUT FUNCTION AND CANCELLATION...811
TROUBLESHOOTING CODE [WRK-27] DEFECTIVE BUCKET LEVELER FUNCTION AND CANCELLATION...813
TROUBLESHOOTING CODE [WRK-28] DEFECTIVE LIFT ARM FLOATING HOLDING AND CANCELLATION...815
TROUBLESHOOTING OF MONITOR SYSTEM (MON MODE)...818
MONITOR SYSTEM DIAGRAM...821
ERROR CODE [2F00MA] DRAGGING OF PARKING BRAKE...825
ERROR CODE [2G42ZG] ACCUMULATOR OIL PRESSURE (FRONT CIRCUIT) LOW...827
ERROR CODE [2G43ZG] ACCUMULATOR OIL PRESSURE (REAR BRAKE CIRCUIT) LOW...828
ERROR CODE [AA1ANX] AIR CLEANER 1 CLOGGED...829
ERROR CODE [AB00L6] DEFECTIVE BATTERY CHARGING CIRCUIT (ALTERNATOR TERMINAL R SIGNAL DETECTED WHEN ENGINE STOPPED...831
ERROR CODE [AB00MA] DEFECTIVE BATTERY CHARGING CIRCUIT (NO ALTERNATOR TERMINAL R SIGNAL DETECTED,DETECTION FAILURE)...832
ERROR CODE [B@BAZG] ENGINE OIL PRESSURE LOW...833
ERROR CODE [B@BAZK] ENGINE OIL LEVEL LOW...834
ERROR CODE [B@BCNS] ENGINE WATER TEMPERATURE OVERHEATING...835
ERROR CODE [B@BCZK] ALARM INDICATING LOW COOLANT LEVEL...836
ERROR CODE [B@HANS] HYDRAULIC OIL TEMPERATURE OVERHEATING...837
ERROR CODE [B@CENS] TORQUE CONVERTER OIL TEMPERATURE OVERHEATING...838
ERROR CODE [D182KZ] THE PREHEATER RELAY COIL IS DISCONNECTED OR SHIRT-CIRCUITED...839
ERROR CODE [D5ZHL6] STARTING SWITCH C (IGN""C"") INPUT FAILURE...841
ERROR CODE [DA80L4] AUTO GREASE INPUT FAILURE...842
ERROR CODE [DAF3KK] SW POWER SUPPLY (FOR OPERATION) = ON AND NSW POWER SUPPLY (FOR MEMORY) IS OFF...843
ERROR CODE [DAF5KP] 5V POWER SUPPLY OUTPUT FAILURE...845
ERROR CODE [DAF6KP] 24V POWER SUPPLY OUTPUT FAILURE...847
ERROR CODE [DAFBKM] WRONG INFORMATION ON MODEL SELECTION...849
ERROR CODE [DAFSKQ] WRONG INFORMATION ON METER DISPLAY SELECTION...850
ERROR CODE [DAQSKR] S-NET COMMUNICATION FAILURE (BETWEEN MONITOR PANEL AND TRANSMISSION CONTROLLER) ...851
ERROR CODE [DbQsKr] S-NET COMMUNICATION FAILURE (BETWEEN MONITOR PANEL AND WORK EQUIPMENT CONTROLLER) ...852
ERROR CODE [DB9SKR] S-NET COMMUNICATION FAILURE (BETWEEN MONITOR PANEL AND WORK EQUIPMENT CONTROLLER) ...853
ERROR CODE [DD15LD] MONITOR PANEL MODE SELECTOR SWITCH 1 [■] (PANEL SW1) INPUT ERROR...854
ERROR CODE [DD16LD] MONITOR PANEL MODE SELECTOR SWITCH 1 [◇] (PANEL SW2) INPUT ERROR...855
ERROR CODE [DD17LD] THE MONITOR PANEL MODE SELECTOR SWITCH 2 [<] (PANEL SW3) INPUT CIRCUIT REMAINS CLOSED FOR MORE THAN ONE MINUTE...856
ERROR CODE [DD18LD] MONITOR PANEL MODE SELECTOR SWITCH 2 [>] (PANEL SW4) INPUT ERROR...857
ERROR CODE [DD1CLD] SUB-TOTAL SWITCH FAILURE [*]...859
ERROR CODE [DDS5L6] DECREASED STEERING OIL PRESSURE...861
ERROR CODE [DDY0LD] CANCEL SWITCH FAILURE [*]...863
ERROR CODE [DGE2KX] ENGINE WATER TEMPERATURE SENSOR SYSTEM FAILURE...865
ERROR CODE [dge3L6] ABNORMAL CONNECTION OF ENGINE WATER TEMPERATURE (LOW TEMPERATURE) SENSOR SYSTEM...866
ERROR CODE [DGH2KX] HYDRAULIC OIL TEMPERATURE SENSOR SYSTEM FAILURE...867
ERROR CODE [DGT1KX] TORQUE CONVERTER OIL TEMPERATURE SENSOR SYSTEM FAILURE...868
ERROR CODE [DHE4L6] ENGINE OIL PRESSURE SENSOR SYSTEM FAILURE...869
ERROR CODE [DHPCKX] BOTTOM PRESSURE SENSOR FAILURE [*]...871
ERROR CODE [DHPDKX] HEAD PRESSURE SENSOR FAILURE [*]...873
ERROR CODE [DKA0KX] LIFT ARM ANGLE SENSOR FAILURE [*]...875
ERROR CODE [DV00KB] SHORT-CIRCUITED ALARM BUZZER OUTPUT SYSTEM...876
ERROR CODE [DY30ME] THE EMERGENCY STEERING REMAINS ACTUATED FOR MORE THAN ONE MINUTE...877
TROUBLESHOOTING CODE [MON-1] THE PARKING BRAKE INDICATOR LAMP DOES NOT LIGHT UP WHEN THE PARKING BRAKE SWITCH IS TURNED ON (THE PARKING BRAKE INDICATOR SWITCH CIRCUIT SUFFERS A GROUND FAULT)...879
TROUBLESHOOTING CODE [MON-2] THE BRAKE OIL PRESSURE CAUTION LAMP DOES NOT LIGHT UP WHEN THE EMERGENCY BRAKE IS APPLIED (FRONT CIRCUIT)...881
TROUBLESHOOTING CODE [MON-3] THE BRAKE OIL PRESSURE CAUTION LAMP DOES NOT LIGHT UP WHEN THE EMERGENCY BRAKE IS APPLIED (REAR CIRCUIT)...882
TROUBLESHOOTING CODE [MON-4] THE AIR CLEANER CLOGGING INDICATOR LAMP DOES NOT LIGHT ON...883
TROUBLESHOOTING CODE [MON-5] THE ENGINE HYDRAULIC CAUTION LAMP DOES NOT LIGHT ON...885
TROUBLESHOOTING CODE [MON-6] THE ENGINE OIL LEVEL CAUTION LAMP DOES NOT LIGHT ON...886
TROUBLESHOOTING CODE [MON-7] THE ENGINE WATER TEMPERATURE CAUTION LAMP DOES NOT LIGHT ON...887
TROUBLESHOOTING CODE [MON-8] THE RADIATOR WATER VOLUME CAUTION LAMP DOES NOT LIGHT ON...888
TROUBLESHOOTING CODE [MON-9] THE HYDRAULIC OIL TEMPERATURE CAUTION LAMP DOES NOT LIGHT ON...889
TROUBLESHOOTING CODE [MON-10] THE TORQUE CONVERTER OIL TEMPERATURE CAUTION LAMP DOES NOT LIGHT ON...890
TROUBLESHOOTING CODE [MON-11] THE STEERING HYDRAULIC CAUTION LAMP DOES NOT LIGHT ON...891
TROUBLESHOOTING CODE [MON-12] INPUT FAULT IN MONITOR PANEL MODE SWITCH 1 [■] (PANEL SW1)...892
TROUBLESHOOTING CODE [MON-13] INPUT FAULT IN MONITOR PANEL MODE SWITCH 1 [◇] (PANEL SW2)...893
TROUBLESHOOTING CODE [MON-14] INPUT FAULT IN MONITOR PANEL MODE SWITCH 2 [<] (PANEL SW3)...894
TROUBLESHOOTING CODE [MON-15] INPUT FAULT IN MONITOR PANEL MODE SWITCH 2 [>] (PANEL SW4)...895
TROUBLESHOOTING CODE [MON-16] DEFECTIVE SUBTOTAL SWITCH...896
TROUBLESHOOTING CODE [MON-17] DEFECTIVE CANCEL SWITCH...897
TROUBLESHOOTING CODE [MON-18] DEFECTIVE BOTTOM PRESSURE SENSOR (HOT SHORT FAULT)...898
TROUBLESHOOTING CODE [MON-19] DEFECTIVE HEAD SENSOR...899
TROUBLESHOOTING CODE [MON-20] THE ALARM BUZZER DOES NOT SOUND OR STOP (DISCONNECTION OR SHORT CIRCUIT WITH CHASSIS GROUND IN BUZZER OUTPUT SYSTEM)...900
TROUBLESHOOTING OF HYDRAULIC,MECHANICAL SYSTEM (H MODE)...902
H-1 THE MACHINE DOES NOT START...903
H-2 THE LOCK-UP CLUTCH IS NOT RELEASED (THE ENGINE STOPS)(WHEN THE LOCK-UP CLUTCH IS PROVIDED)...905
H-3a THE TRAVED SPEED IS SLOW,THE THRUSTING FORCE IS WEAK,THE UPHILL TRAVELING POWER IS WEAK,AND THE GEAR IS NOT SHIFTED...906
H-3b THE TORQUE CONVERTER LOCK-UP CLUTCH IS NOT LOT IN(IF THE LOCK-UP CLUTCH IS EQUIPPED)...908
H-4 SHOCKS ARE LARGE AT THE TIMES OF STARTING AND SHIFTING GEAR...909
H-5 TIME LAG IS LARGE AT THE TIMES OF STARTING AND SHIFTING GEAR...911
H-6 THE TORQUE CONVERTER OIL TEMPERATURE IS HIGH...913
H-7 THE STEERING WHEEL DOES NOT TURN...914
H-8 THE STEERING WHEEL IS HEAVY...915
H-9 THE STEERING WHEEL FLUCTUATES OR IS STRONGLY SHOCKED...916
H-10 THE MACHINE STEERS TO ONE SIDE WHEN TRAVELING...916
H-11 THE RIGHT AND LEFT SWING RADII ARE DIFFERENT...916
H-12 THE BRAKE DOES NOT WORK OR DOES NOT WORK WELL...917
H-13 THE BRAKE IS NOT RELEASED OR IS DRAGGED...918
H-14 THE BRAKE IS NOT RELEASED OR DRAGGED...919
H-15 THE LIFT ARM DOES NOT RISE...920
H-16 THE LIFT ARM MOVES SLOWLY OR THE LIFT ARM RISING FORCE IS INSUFFICIENT...921
H-17 WHEN RISING,THE LIFT ARM COMES TO MOVE SLOWLY AT SPECIFIC HEIGHT...922
H-18 THE LIFT ARM CYLINDER CANNOT HOLD DOWN THE BUCKET(THE BUCKER RISES IN THE AIR)...922
H-19 HYDRAULIC DRIFTS OF THE LIFE ARM OCCUR OFTEN...922
H-20 THE LIFT ARM WOBBLES DURING OPERATION...922
H-21 WHEN THE CONTROL LOVER IS SWITCHED FROM "HOLD" TO "RAISE," THE LIFT ARM FALLS TEMPORARILY...923
H-22 THE BUCKET DOES NOT TILT BACK...924
H-23 THE BUCKET MOVES SLOWLY OR THE TILTING-BACK FORCE IS INSUFFICIENT...925
H-24 THE BUCKET COMES TO OPERATE SLOWLY IN THE MIDST OF TILTING-BACK...926
H-25 THE BUCKET CYLINDER CANNOT HOLD DOWN THE BUCKET...926
H-26 HYDRAULIC DRIFTS OF THE BUCKET OCCUR OFTEN...926
H-27 THE BUCKET WOBBLES DURING TRAVEL WITH CARGO (THE WORK EQUIPMENT VALVE IS SET TO "HOLD")...927
H-28 WHEN THE CONTROL LEVER IS SWITCHED FROM "HOLD" TO "TILT," THE BUCKET FALLS TEMPORARILY...927
H-29 THE CONTROL LEVERS OF LIFT ARM AND BUCKET DO NOT MOVE SMOOTHLY AND HEAVY...928
H-30 ECSS DOES NOT WORK,AND THERE IS PITCHING AND BOUNCING...929
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)...930
ELECTRICAL SYSTEM DIAGRAM...931
TROUBLESHOOTING CODE:[E-1-a] (THE ENGINE DOES NOT START. (STARTING SYSTEM))...933
TROUBLESHOOTING CODE:[E-1-b] (THE ENGINE DOES NOT START)...937
TROUBLESHOOTING CODE:[E-2] (THE ENGINE DOES NOT STOP)...939
TROUBLESHOOTING CODE:[E-3] (PREHEATING IS IMPOSSIBLE OR CONSTANT)...941
TROUBLESHOOTING CODE:[E-4] (THE ENGINE POWER MODES CANNOT BE SELECTED)...943
TROUBLESHOOTING CODE:[E-5] (THE FRONT WIPER DOES NOT FUNCTION)...945
TROUBLESHOOTING CODE:[E-6] (THE REAR WIPER DOES NOT FUNCTION)...949
TROUBLESHOOTING CODE:[E-7] (THE SIDE WIPER DOES NOT FUNCTION (IF EQUIPPED))...951
TROUBLESHOOTING CODE:[E-8] (THE WIND WASHER DOES NOT FUNCTION)...952
TROUBLESHOOTING CODE:[E-9] (THE HEADLAMP (LO BEAM) DOES NOT LIGHT ON)...955
TROUBLESHOOTING CODE:[E-10] (THE HEADLAMP (HI BEAM) DOES NOT FUNCTION)...958
TROUBLESHOOTING CODE:[E-11] (THE CLEARANCE LAMP DOES NOT LIGHT ON (SMALL LAMP))...960
TROUBLESHOOTING CODE:[E-12] (THE TURN SIGNAL DOES NOT BLINK)...961
TROUBLESHOOTING CODE:[E-13] (THE BORN DOES NOT SOUND)...963
TROUBLESHOOTING CODE:[E-14] (THE AIR CONDITIONER DOES NOT WORK OR DOES NOT STOP)...965
TROUBLESHOOTING OF ENGINE (S MODE)...968
METHOD OF USING TROUBLESHOOTING CHARTS...969
S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)...973
S-2 ENGINE DOES NOT START...974
(1) ENGINE DOES NOT TURN...974
(2) ENGINE TURNS BUT NO EXHAUST SMOKE COMES OUT (FUEL IS NOT BEING INJECTED)...975
(3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)...976
S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)...977
S-4 ENGINE STOPS DURING OPERATIONS...978
S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)...979
S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)...980
S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)...981
S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)...982
S-9 OIL BECOMES CONTAMINATED QUICKLY...983
S-10 FUEL CONSUMPTION IS EXCESSIVE...984
S-11 OIL IS IN COOLING WATER,OR WATER SPURTS BACK,OR WATER LEVEL GOES DOWN...985
S-12 OIL PRESSURE CAUTION LAMP LIGHTS UP (DROP IN OIL PRESSURE)...986
S-13 OIL LEVEL RISES (WATER,FUEL IN OIL)...987
S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)...988
S-15 ABNORMAL NOISE IS MADE...989
S-16 VIBRATION IS EXCESSIVE...990
30 DISASSEMBLY AND ASSEMBLY...992
HOW TO READ THIS MANUAL...994
PRECAUTIONS WHEN PERFORMING OPERATION...996
SPECIAL TOOL LIST...998
REMOVAL AND INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY...1014
REMOVAL...1014
INSTALLATION...1015
REMOVAL AND INSTALLATION OF NOZZLE HOLDER ASSEMBLY...1016
REMOVAL...1016
INSTALLATION...1016
REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY...1017
SPECIAL TOOL...1017
REMOVAL...1017
INSTALLATION...1022
REMOVAL AND INSTALLATION OF ENGINE ADDEMBLY...1025
SPECIAL TOOL...1025
REMOVAL...1025
INSTALLATION...1031
REMOVAL AND INSTALLATION OF AFTER COOLER ASSEMBLY...1032
REMOVAL...1032
INSTALLATION...1032
REMOVAL AND INSTALLATION OF RADIATOR, FAN MOTOR AND AFTER COOLER ASSEMBLY...1034
REMOVAL...1034
INSTALLATION...1036
REMOVAL AND INSTALLATION FUEL TANK ASSEMBLY...1037
REMOVAL ...1037
INSTALLATION...1038
REMOVAL AND INSTALLATION OF PARKING BRAKE DISC AND PLATE...1039
SPECIAL TOOL...1039
REMOVAL...1039
INSTALLATION...1041
REMOVAL AND INSTALLATION OF TORQUE CONVERTER AND TRANSMISSION ASSEMBLY...1042
REMOVAL...1042
INSTALLATION...1046
DISASSEMBLY AND ASSEMBLY OF TRANSMISSION ASSEMBLY...1048
SPECIAL TOOL...1048
DISASSEMBLY...1048
ASSEMBLY...1055
DISASSEMBLY AND ASSEMBLY OF TRANSMISSION CLUTCH PACK ASSEMBLY ...1063
SPECIAL TOOLS...1063
DISASSEMBLY...1063
ASSEMBLY...1069
DISASSEMBLY AND ASSEMBLY OF PARKING BRAKE ASSEMBLY...1079
SPECIAL TOOLS...1079
DISASSEMBLY...1079
ASSEMBLY...1081
DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER ASSEMBLY (STANDARD SPECIFICATION)...1087
SPECIAL TOOLS...1087
DISASSEMBLY...1087
ASSEMBLY...1089
DISASSEMBLY AND ASSEMBLY OF TORQUE CONVERTER ASSEMBLY(LOCK-UP SPECIFICATION)...1091
SPECIAL TOOLS...1091
DISASSEMBLY...1091
ASSEMBLY...1093
REMOVAL AND INSTALLATION OF FRONT AXLE ASSEMBLY...1097
REMOVAL...1097
INSTALLATION...1097
REMOVAL AND INSTALLATION OF REAR AXLE ASSEMBLY...1098
REMOVAL ...1098
INSTALLATION...1100
DISASSEMBLY AND ASSEMBLY OF AXLE HOUSING ASSEMBLY...1101
SPECIAL TOOLS...1101
DISASSEMBLY...1101
ASSEMBLY...1104
DISASSEMBLY AND ASSEMBLY OF DIFFERENTIAL ASSEMBLY...1110
SPECIAL TOOLS...1110
DISASSEMBLY...1110
ASSEMBLY...1116
REMOVAL AND INSTALLATION OF CENTER HING PIN...1131
SPECIAL TOOL...1131
REMOVAL...1131
INSTALLATION...1135
REMOVAL AND INSTALLATION OF CAB ASSEMBLY...1139
REMOVAL ...1139
INSTALLATION...1141
REMOVAL AND INSTALLATION OF CAB AND FLOOR FRAME ASSEMBLY...1142
SPECIAL TOOL...1142
REMOVAL...1142
INSTALLATION...1145
REMOVAL AND INSTALLATION OF OPERATOR'S CAB GLASS(STUCK GLASS)...1146
SPECIAL TOOL...1146
REMOVAL...1146
INSTALLATION...1147
COATING MATERIALS...1153
REMOVAL AND INSTALLATION OF TORQUE CONVERTER WORK EQUIPMENT AND PILOT CONTROL PUMP ASSEMBLY...1154
REMOVAL...1154
INSTALLATION...1154
REMOVAL AND INSTALLATION OF STEERING, SWITCH AND FAN PUMP ASSEMBLY...1155
REMOVAL...1155
INSTALLATION...1155
REMOVAL AND INSTALLATION OF STEERING DEMAND VALVE ASSEMBLY...1156
REMOVAL ...1156
INSTALLATION...1156
REMOVAL AND INSTALLATION OF STEERING VALVE OIL SEAL...1157
REMOVAL...1157
INSTALLATION...1158
REMOVAL AND INSTALLATION OF TRAVEL DUMPER VALVE ASSEMBLY...1159
REMOVAL...1159
INSTALLATION...1159
REMOVAL AND INSTALLATION OF WORK EQUIPMENT VALVE ASSEMBLY...1160
REMOVAL ...1160
INSTALLATION...1161
REMOVAL AND INSTALLATION OF HYDRAULIC TANK ...1162
REMOVAL...1162
INSTALLATION...1163
REMOVAL AND INSTALLATION OF HYDRAULIC TANK...1164
REMOVAL ...1164
INSTALLATION...1166
DISASSEMBLY AD ASSEMBLY OF HYDRAULIC CYLINDER...1170
SPECIAL TOOL...1170
DISASSEMBLY...1170
ASSEMBLY...1173
REMOVAL AND INSTALLATION OF COUNTER WEIGHT...1178
REMOVAL...1178
INSTALLATION...1178
REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT...1179
SPECIAL TOOL...1179
REMOVAL...1179
INSTALLATION...1181
REMOVAL AND INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY...1182
SPECIAL TOOL...1182
REMOVAL...1182
INSTALLATION...1183
DISASSEMBLY, ASSEMBLY OF OPERATOR'S SEAT ASSEMBLY...1184
DISASSEMBLY...1184
ASSEMBLY...1189
90 OTHERS...1194
POWER TRAIN OIL CIRCUIT DIAGRAM(WITHOUT TORQUE CONVERTER LOCKUP CLUTCH)...1196
POWER TRAIN OIL CIRCUIT DIAGRAM(WITH TORQUE CONVERTER LOCKUP CLUTCH)...1198
BRAKE OIL CIRCUIT DIAGRAM...1200
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM...1202
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM(FOR ELECTRIC WORK EQUIPMENT LEVER)...1203
ELECTRICAL CIRCUIT DIAGRAM(1/8)(1/4)...1204
ELECTRICAL CIRCUIT DIAGRAM(1/8)(2/4)...1205
ELECTRICAL CIRCUIT DIAGRAM(1/8)(3/4)...1206
ELECTRICAL CIRCUIT DIAGRAM(1/8)(4/4)...1207
ELECTRICAL CIRCUIT DIAGRAM(2/8)(1/4)...1208
ELECTRICAL CIRCUIT DIAGRAM(2/8)(2/4)...1209
ELECTRICAL CIRCUIT DIAGRAM(2/8)(3/4)...1210
ELECTRICAL CIRCUIT DIAGRAM(2/8)(4/4)...1211
ELECTRICAL CIRCUIT DIAGRAM(3/8)...1212
ELECTRICAL CIRCUIT DIAGRAM(4/8)...1213
ELECTRICAL CIRCUIT DIAGRAM(5/8)...1214
ELECTRICAL CIRCUIT DIAGRAM(6/8)...1215
ELECTRICAL CIRCUIT DIAGRAM(7/8)...1216
ELECTRICAL CIRCUIT DIAGRAM(8/8)...1217
SEN00823-16 - Wheel Loader WA430-6 Shop Manual...1218
Cover...1218
00 Index and foreword...0
Index...1220
Composition of shop manual...1221
Table of contents...1223
Foreword and general information...1236
Safety notice...1237
How to read the shop manual...1242
Explanation of terms for maintenance standard...1244
Handling of electric equipment and hydraulic component...1246
Handling of connectors newly used for engines...1255
How to read electric wire code...1258
Precautions when carrying out operation...1261
Method of disassembling and connecting push-pull type coupler...1264
Standard tightening torque table...1267
Conversion table...1271
01 Specification...0
Specification and technical data...1278
Specification dimension drawing...1280
Specifications...1281
Weight table...1285
Table of fuel, coolant and lubricants...1287
10 Structure, function and maintenance standard...0
Engine and cooling system...1290
Engine mount and transmission mount...1291
Cooling system...1292
Cooling fan pump...1293
Cooling fan motor...1301
Power train...1308
Power train...1310
Power train system diagram...1311
Drive shaft...1313
Power train piping diagram...1314
Torque converter...1315
Transmission...1323
Flow control valve...1340
Transmission control valve...1343
ECMV...1347
Main relief valve and torque converter relief valve...1353
Axle...1355
Differential...1357
Limited slip differential...1363
Final drive...1369
Steering system...1376
Steering piping diagram...1378
Steering column...1379
Steering pump...1380
Steering valve...1392
Orbit-roll valve...1407
Stop valve...1411
Steering relief valve...1412
Steering cylinder...1413
Emergency steering motor...1415
Emergency steering pump...1416
Joystick steering lever linkage...1417
Steering electric lever...1418
Joystick EPC valve...1419
Brake system...1422
Brake piping diagram...1423
Charge valve...1424
Brake valve...1431
Accumulator (for brake)...1436
Brake...1437
Parking brake control...1442
Parking brake...1443
Parking brake solenoid valve...1445
Emergency parking brake release valve...1447
Undercarriage and frame...1450
Axle mount and center hinge pin...1451
Tires...1455
Hydraulic system, Part 1...1458
Hydraulic piping diagram...1459
Work equipment control lever linkage...1462
Hydraulic tank...1465
Power train pump...1467
Work equipment pump...1468
Work equipment control valve...1479
CLSS...1493
Each function and operation of each valve...1497
Hydraulic system, Part 2...1520
PPC valve...1521
Stabilizer valve...1529
Accumulator (for PPC circuit)...1535
Accumulator (for ECSS)...1536
Work equipment PPC cut-off solenoid valve...1537
Work equipment...1540
Work equipment linkage...1541
Bucket...1543
Bucket positioner and boom kick-out...1544
Work equipment cylinder...1550
Cab and its attachments...1552
Cab...1554
Air conditioner...1555
Electrical system, Part 1...1574
Machine monitor system...1575
Machine monitor...1579
Electrical system, Part 2...1612
Electrical system (Transmission controller system)...1613
Transmission controller...1655
Electrical system (Work equipment controller system)...1657
Work equipment controller...1663
Electrical system, Part 3...1666
Electric transmission control...1667
Kickdown switch and hold switch...1671
Load meter cancel switch and load meter subtotal switch...1671
Multi-function knob...1672
Joystick steering knob...1673
KOMTRAX system...1675
Engine starting circuit...1677
Engine stopping circuit...1679
Preheating circuit...1680
Engine power mode selector circuit...1681
Engine output derating function...1682
Automatic warm-up function...1682
Parking brake circuit...1683
Sensor...1685
20 Standard value table...0
Standard service value table...1696
Standard value table for engine...1697
Standard value table for chassis...1698
30 Testing and adjusting...0
Testing and adjusting, Part 1...1706
Tools for testing, adjusting, and troubleshooting...1708
Testing engine speed...1714
Testing exhaust gas color...1716
Testing exhaust temperature...1717
Adjusting valve clearance...1719
Testing compression pressure...1721
Testing blow-by pressure...1725
Testing engine oil pressure...1726
Testing intake air (boost) pressure...1727
Handling fuel system equipment...1728
Releasing residual pressure in fuel system...1728
Testing fuel pressure...1729
Testing fuel return and leak amount...1735
Bleeding air from fuel circuit...1737
Testing leakage in fuel system...1738
Handling reduced cylinder mode operation...1739
Handling no-injection cranking operation...1739
Handling controller voltage circuit...1740
Check of muffler and muffler stack for looseness and damage...1741
Check of muffler function...1741
Check of installed condition of cylinder head and manifolds...1742
Check of engine piping for damage and looseness...1742
Checking and replacing alternator belt...1743
Checking and replacing auto- tensioner...1745
Adjusting transmission speed sensor...1747
Adjusting directional lever length...1748
Adjusting gear shift lever length...1748
Testing directional lever...1749
Testing and adjusting power train oil pressure...1750
Procedure for flushing torque converter and transmission hydraulic circuit...1764
Method of moving machine when transmission valve is broken...1765
Checking axle final drive for oil leakage...1767
Checking drive shafts for looseness, play and damage...1767
Testing and adjusting steering stop valve...1768
Testing and adjusting steering wheel...1770
Testing and adjusting steering oil pressure...1772
Bleeding air from steering circuit...1775
Testing and adjusting, Part 2...1778
Testing hydraulic drive fan...1780
Bleeding air from hydraulic drive fan circuit...1782
Testing brake pedal...1784
Testing and adjusting brake pedal linkage...1785
Testing brake performance...1786
Testing and adjusting accumulator charge pressure...1787
Testing wheel brake oil pressure...1788
Testing wear of wheel brake disc...1790
Bleeding air from wheel brake circuit...1791
Releasing residual pressure in brake accumulator circuit...1792
Testing parking brake performance...1793
Testing parking brake oil pressure...1794
Testing wear of parking brake disc...1796
Method of releasing parking brake manually...1797
Testing and adjusting work equipment control lever...1798
Testing and adjusting work equipment PPC oil pressure...1799
Testing and adjusting work equipment oil pressure...1802
Bleeding air from work equipment circuit...1806
Releasing residual pressure in work equipment circuit...1807
Procedure for testing of nitrogen gas pressure and charging of nitrogen gas of ECSS (Electronically Controlled Suspension System) accumulator...1808
Testing and adjusting bucket positioner...1814
Testing and adjusting boom kickout...1816
Checking proximity switch operation pilot lamp...1817
Procedure for testing diodes...1818
Preparation work for troubleshooting for electrical system...1819
Starting KOMTRAX terminal operations...1824
Indicator lamps of KOMTRAX terminal...1829
Testing and adjusting, Part 3...1834
Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor...1835
Special functions of machine monitor (EMMS)...1838
Pm-clinic inspection table...1906
40 Troubleshooting...0
Failure code table and fuse locations...1910
Failure code table...1911
Fuse locations...1922
General information on troubleshooting...1926
Points to remember when troubleshooting...1927
Sequence of events in troubleshooting...1928
Testing before troubleshooting...1929
Classification and procedures of troubleshooting...1930
Information contained in troubleshooting table...1933
Connection table for connector pin numbers...1935
T- branch box and T- branch adapter table...1971
Troubleshooting by failure code (Display of code), Part 1...1976
Failure code [1500L0] (TORQFLOW transmission: Double meshing)...1978
Failure code [15SAL1] (ECMV F clutch: When command current is OFF, fill signal is ON)...1979
Failure code [15SALH] (ECMV F clutch: When command current is ON, fill signal is OFF)...1981
Failure code [15SBL1] (ECMV R clutch: When command current is OFF, fill signal is ON)...1983
Failure code [15SBLH] (ECMV R clutch: When command current is ON, fill signal is OFF)...1985
Failure code [15SEL1] (ECMV 1st clutch: When command current is OFF, fill signal is ON)...1987
Failure code [15SELH] (ECMV 1st clutch: When command current is ON, fill signal is OFF)...1989
Failure code [15SFL1] (ECMV 2nd clutch: When command current is OFF, fill signal is ON)...1991
Failure code [15SFLH] (ECMV 2nd clutch: When command current is ON, fill signal is OFF)...1993
Failure code [15SGL1] (ECMV 3rd clutch: When command current is OFF, fill signal is ON)...1995
Failure code [15SGLH] (ECMV 3rd clutch: When command current is ON, fill signal is OFF)...1997
Failure code [15SHL1] (ECMV 4th clutch: When command current is OFF, fill signal is ON)...1999
Failure code [15SHLH] (ECMV 4th clutch: When command current is ON, fill signal is OFF)...2001
Failure code [2F00MA] (Parking brake: Malfunction)...2003
Failure code [2G43ZG] (Accumulator: Low oil pressure)...2005
Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree)...2007
Troubleshooting by failure code (Display of code), Part 2...2012
Failure code [AA1ANX] (Air cleaner: Clogging)...2015
Failure code [AB00L6] (Alternator: Signal disagrees with operating state of engine)...2017
Failure code [AB00MA] (Alternator: Malfunction)...2019
Failure code [B@BAZG] (Rotation derating by low engine oil pressure)...2021
Failure code [B@BAZK] (Engine oil: Low level)...2022
Failure code [B@BCNS] (Coolant: Overheating)...2023
Failure code [B@BCZK] (Coolant: Low level)...2025
Failure code [B@BEBF] (Water in fuel error)...2027
Failure code [b@CENS] (Torque converter oil: Overheating)...2029
Failure code [B@CENS] (Torque converter oil: Overheating)...2031
Failure code [B@HANS] (Hydraulic oil: Overheating)...2033
Failure code [CA111] (Abnormality in engine controller)...2035
Failure code [CA115] (Engine Ne or Bkup speed sensor error)...2036
Failure code [CA122] (Charge pressure sensor high error)...2037
Failure code [CA123] (Charge pressure sensor low error)...2039
Failure code [CA131] (Throttle sensor high error)...2041
Failure code [CA132] (Throttle sensor low error)...2043
Failure code [CA144] (Coolant sensor high error)...2045
Failure code [CA145] (Coolant sensor low error)...2047
Failure code [CA153] (Charge temperature sensor high error)...2049
Failure code [CA154] (Charge temperature sensor low error)...2051
Failure code [CA155] (Derating of speed by abnormally high charge temperature)...2053
Failure code [CA187] (Sensor power supply 2 low error)...2055
Failure code [CA221] (Atmospheric pressure sensor high error)...2057
Failure code [CA222] (Atmospheric sensor low error)...2059
Failure code [CA227] (Sensor power supply 2 high error)...2061
Failure code [CA234] (Engine overspeed)...2062
Failure code [CA238] (Ne speed sensor power supply error)...2063
Troubleshooting by failure code (Display of code), Part 3...2066
Failure code [CA271] (IMV/PCV1 Short circuit)...2068
Failure code [CA272] (IMV/PCV1 Disconnection)...2069
Failure code [CA281] High pressure pump error...2071
Failure code [CA322] (Injector #1 open/short error)...2073
Failure code [CA323] (Injector #5 open/short error)...2075
Failure code [CA324] (Injector #3 open/short error)...2077
Failure code [CA325] (Injector #6 open/short error)...2079
Failure code [CA331] (Injector #2 open/short error)...2081
Failure code [CA332] (Injector #4 open/short error)...2083
Failure code [CA342] (Calibration code inconsistency)...2085
Failure code [CA351] (Injectors drive circuit error)...2087
Failure code [CA352] (Sensor power supply 1 low error)...2089
Failure code [CA386] (Sensor power supply 1 high error)...2091
Failure code [CA428] (Abnormally high level in water sensor)...2092
Failure code [CA429] (Abnormally low level in water sensor)...2093
Failure code [CA431] (Idle validation switch error)...2095
Failure code [CA432] (Idle validation action error)...2097
Failure code [CA435] (Engine oil pressure switch error)...2099
Failure code [CA441] (Battery voltage low error)...2100
Failure code [CA442] (Battery voltage high error)...2103
Failure code [CA449] Common rail pressure high error 2...2105
Failure code [CA451] (Common rail pressure sensor high error)...2109
Failure code [CA452] (Common rail pressure sensor low error)...2111
Failure code [CA488] (Derating of torque by abnormally high charge temperature)...2113
Failure code [CA553] (Common rail pressure high error 1)...2114
Failure code [CA559] (Supply pump pressure very low error)...2115
Failure code [CA689] (Engine Ne speed sensor error)...2117
Failure code [CA731] (Engine Bkup speed sensor phase error)...2119
Failure code [CA757] (All continuous data lost error)...2120
Failure code [CA778] (Engine Bkup speed sensor error)...2123
Failure code [CA1633] (KOMNET datalink timeout error)...2125
Failure code [CA2185] (Throttle sensor power supply voltage high error)...2127
Failure code [CA2186] (Throttle sensor power supply voltage low error)...2128
Troubleshooting by failure code (Display of code), Part 4...2130
Failure code [CA2249] (Supply pump pressure very low error 2)...2132
Failure code [CA2265] (Abnormally high level in electric lift pump)...2133
Failure code [CA2266] (Abnormally low level in electric lift pump)...2135
Failure code [CA2311] (Abnormality in IMV solenoid)...2137
Failure code [CA2555] (Intake heater relay disconnection error)...2139
Failure code [CA2556] (Intake heater relay short circuit error)...2141
Failure code [D150KA] (Emergency steering relay: Disconnection)...2143
Failure code [D150KB] (Emergency steering relay: Short circuit)...2145
Failure code [D150KY] (Emergency steering relay: Short circuit with power supply line)...2147
Failure code [D160KA] (Backup lamp relay: Disconnection)...2149
Failure code [D160KB] (Backup lamp relay: Short circuit)...2151
Failure code [D160KZ] (Backup lamp relay: Disconnection or short circuit)...2153
Failure code [D191KA] (Joystick steering neutral safety relay: Disconnection)...2155
Failure code [D191KB] (Joystick steering neutral safety relay: Short circuit)...2157
Failure code [D191KY] (Joystick steering neutral safety relay: Short circuit with power supply line)...2159
Failure code [D192KA] (ECSS solenoid: Disconnection)...2161
Failure code [D192KB] (ECSS solenoid: Short circuit)...2162
Failure code [D192KY] (ECSS solenoid: Short circuit with power supply line)...2163
Failure code [D193KA] (Joystick steering solenoid cut relay: Disconnection)...2165
Failure code [D193KB] (Joystick steering solenoid cut relay: Short circuit)...2167
Failure code [D193KY] (Joystick steering solenoid cut relay: Short circuit with power supply line)...2169
Failure code [D5ZHKA] (Terminal C signal: Disconnection)...2172
Failure code [D5ZHKB] (Terminal C signal: Short circuit)...2176
Failure code [D5ZHKZ] (Terminal C signal: Disconnection or short circuit)...2179
Failure code [D5ZHL6] (Terminal C signal: Signal does not match engine running or stopped state)...2184
Failure code [DA80L4] (Auto grease controller: ON/OFF signals disagree)...2187
Failure code [DAF3KK] (Machine monitor: Low source voltage (input)...2189
Failure code [DAF5KP] (Machine monitor: Low output voltage)...2191
Failure code [DAFRKR] (CAN communication with machine monitor: Defective communication (Abnormality in target component system)...2195
Troubleshooting by failure code (Display of code), Part 5...2198
Failure code [DAQ0KK] (Transmission controller: Low source voltage)...2201
Failure code [DAQ0KT] (Transmission controller: Abnormality in controller)...2203
Failure code [DAQ1KA] (Terminal ACC input: Disconnection)...2204
Failure code [DAQ2KK] (Transmission controller load power supply line: Low source voltage (input)...2207
Failure code [DAQ9KQ] (Transmission controller model selection: Disagreement of model selection signals)...2209
Failure code [DAQRKR] (CAN communication with transmission controller: Defective communication (Abnormality in target component system)...2210
Failure code [DAQRMA] (Transmission controller option setting: Disagreement of option selection)...2213
Failure code [DB2RKR] (CAN communication with engine controller: Defective communication (Abnormality in target component system)...2215
Failure code [DB90KK] Work equipment controller: Low source voltage (input)...2217
Failure code [DB90KT] Work equipment controller: Abnormality in controller...2219
Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input)...2221
Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range...2223
Failure code [DB99KQ] (Work equipment controller model selection: Disagreement in model selection signals)...2226
Failure code [DB9RKR] CAN communication with work equipment controller: Defective communication (Abnormality in target component system)...2227
Failure code [DB9RMA] (Work equipment controller option setting: Malfunction)...2229
Failure code [DB9RMC] (CAN communication with transmission controller, engine controller and machine monitor: Defective operation)...2230
Failure code [DD15LD] ■ switch (Panel switch 1): Switch is kept pressed for long time...2233
Failure code [DD16LD] ◇ switch (Panel switch 2): Switch is kept pressed for long time...2235
Failure code [DD17LD] < switch (Panel switch 3): Switch is kept pressed for long time...2237
Failure code [DD18LD] > switch (Panel switch 4): Switch is kept pressed for long time...2239
Failure code [DD1ALD] Remote positioner raise/lower set switch (raise): Switch is kept pressed for long time...2241
Failure code [DD1BLD] Remote positioner raise/lower set switch (lower): Switch is kept pressed for long time...2243
Failure code [DD1CLD] Load meter subtotal switch: Switch is kept pressed for long time...2245
Failure code [DD1FLD] Load meter mode selector switch (A/B): Switch is kept pressed for long time...2247
Failure code [DD1GLD] Load meter mode selector switch (+/–): Switch is kept pressed for long time...2249
Failure code [DD1HLD] (Load meter display selector switch: Switch is kept pressed for long time)...2251
Failure code [DD1NLD] (Fan reverse switch: Switch is kept pressed for long time)...2253
Failure code [DD1NL4] (Fan automatic reverse switch: Switch is kept pressed for long time)...2255
Failure code [DDB6L4] (Parking brake switch (Neutralizer): ON/OFF signals disagree)...2257
Failure code [DDD1LD] (Remote positioner bucket angle set switch: Switch is kept pressed for long time)...2261
Troubleshooting by failure code (Display of code), Part 6...2264
Failure code [DDE5MA] (Emergency steering drive switch: Malfunction)...2267
Failure code [DDK3KA] (Right FNR switch: Disconnection)...2269
Failure code [DDK4KA] (Joystick steering FNR switch: Disconnection)...2272
Failure code [DDK5L4] (Joystick steering shift-up/down switch: ON/OFF signals disagree)...2275
Failure code [DDK6KA] (FNR lever switch: Disconnection)...2277
Failure code [DDK6KB] (FNR lever switch: Short circuit)...2281
Failure code [DDS5KA] (Steering pressure switch: Disconnected)...2283
Failure code [DDS5KB] (Steering pressure switch: Short-circuit)...2285
Failure code [DDS5L6] (Steering: Low oil pressure)...2287
Failure code [DDT0L4] (Shift mode selector switch: ON/OFF signals disagree)...2289
Failure code [DDT4LD] (Transmission cut-off set switch: Switch is kept pressed for long time)...2291
Failure code [DDW9LD] (Kick-down switch: Switch is kept pressed for long time)...2293
Failure code [DDWLLD] (Hold switch: Switch is kept pressed for long time)...2295
Failure code [DDY0LD] (Load meter cancel switch: Switch is kept pressed for long time)...2297
Failure code [DF10KA] (Transmission shift lever switch: Disconnected)...2299
Failure code [DF10KB] (Transmission shift lever switch: Short circuit)...2303
Failure code [DGF1KA] (Transmission oil temperature sensor: Disconnected)...2305
Failure code [DGF1KB] (Transmission oil temperature sensor: Short circuit)...2307
Failure code [DGH2KX] (Hydraulic oil temperature sensor: Out of input signal range)...2309
Failure code [DGR2KA] (Rear brake oil temperature sensor: Disconnected)...2311
Failure code [DGR2KX] (Rear brake oil temperature sensor: Out of input signal range)...2313
Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range)...2315
Troubleshooting by failure code (Display of code), Part 7...2318
Failure code [DH21KA] (Loader pump pressure sensor: Disconnection)...2321
Failure code [DH21KB] (Loader pump pressure sensor: Power supply line short)...2323
Failure code [DHPCKX] (Lift arm cylinder bottom pressure sensor: Out of input signal range)...2325
Failure code [DHPDKX] (Lift arm cylinder head pressure sensor: Out of input signal range)...2327
Failure code [DHT1KX] (Transmission cut-off pressure sensor: Out of input signal range)...2329
Failure code [DHT8KA] (Steering pump pressure sensor: Disconnection)...2331
Failure code [DHT8KB] (Steering pump pressure sensor: Short circuit)...2333
Failure code [DK59KA] (Lift arm EPC lever potentiometer (Main): Disconnection)...2335
Failure code [DK59KY] (Lift arm EPC lever potentiometer (Main): Short circuit with power supply line)...2338
Failure code [DK59L8] (Lift arm EPC lever potentiometer (Main): Analog signals disagree)...2341
Failure code [DK5AKA] (Lift arm EPC lever potentiometer (Sub): Disconnection)...2344
Failure code [DK5AKY] (Lift arm EPC lever potentiometer (Sub): Short circuit with power supply line)...2347
Failure code [DK5BKA] (Bucket EPC lever potentiometer (Main): Disconnection)...2350
Failure code [DK5BKY] (Bucket EPC lever potentiometer (Main): Short circuit with power supply line)...2353
Failure code [DK5BL8] (Bucket EPC lever potentiometer (Main): Analog signals disagree)...2356
Failure code [DK5CKA] (Bucket EPC lever potentiometer (Sub): Disconnection)...2359
Failure code [DK5CKY] (Bucket EPC lever potentiometer (Sub): Short circuit with power supply line)...2362
Troubleshooting by failure code (Display of code), Part 8...2366
Failure code [DK5FKA] (Joystick steering EPC lever potentiometer (Main): Disconnection)...2368
Failure code [DK5FKY] (Joystick steering EPC lever potentiometer (Main): Short circuit with power supply line)...2371
Failure code [DK5GKA] (Joystick steering EPC lever potentiometer (Sub): Disconnection)...2373
Failure code [DK5GKY] (Joystick steering EPC lever potentiometer (Sub): Short circuit with power supply line)...2377
Failure code [DK5FL8] (Joystick steering EPC lever potentiometer (Main): Analog signals disagree)...2379
Failure code [DKA0KA] (Lift arm angle sensor: Disconnection)...2383
Failure code [DKA0KX] (Lift arm angle sensor: Out of input signal range)...2385
Failure code [DKA0KY] (Lift arm angle sensor: Short circuit with power supply line)...2387
Failure code [DKA0L0] (Lift arm angle sensor: Double meshing)...2389
Failure code [DLT3KA] (Transmission output shaft speed sensor: Disconnection)...2391
Failure code [DLT3LC] (Transmission output shaft speed sensor: Out of input signal range)...2393
Failure code [DT20KB] (Transmission cut-off indicator lamp: Short circuit)...2395
Failure code [DUM1KB] (Remote positioner raise set indicator lamp: Short circuit)...2397
Failure code [DUM2KB] (Remote positioner lower set indicator lamp: Short circuit)...2399
Failure code [DV00KB] (Alarm buzzer: Short circuit)...2401
Failure code [DW4PKA] (Lift arm raise EPC solenoid: Disconnection)...2403
Failure code [DW4PKB] (Lift arm raise EPC solenoid: Short circuit)...2405
Failure code [DW4PKY] (Lift arm raise EPC solenoid: Short circuit with power supply line)...2407
Failure code [DW4QKA] (Lift arm lower EPC solenoid: Disconnection)...2409
Failure code [DW4QKB] (Lift arm lower EPC solenoid: Short circuit)...2410
Failure code [DW4QKY] (Lift arm lower EPC solenoid: Short circuit with power supply line)...2411
Failure code [DW4RKA] (Bucket tilt EPC solenoid: Disconnection)...2413
Failure code [DW4RKB] (Bucket tilt EPC solenoid: Short circuit)...2414
Failure code [DW4RKY] (Bucket tilt EPC solenoid: Short circuit with power supply line)...2415
Troubleshooting by failure code (Display of code), Part 9...2418
Failure code [DW4SKA] (Bucket dump EPC solenoid: Disconnection)...2420
Failure code [DW4SKB] (Bucket dump EPC solenoid: Short circuit)...2421
Failure code [DW4SKY] (Bucket dump EPC solenoid: Short circuit with power supply line)...2423
Failure code [DW7BKA] (Fan reverse solenoid: Disconnection)...2425
Failure code [DW7BKB] (Fan reverse solenoid: Short circuit)...2426
Failure code [DW7BKY] (Fan reverse solenoid: Short circuit with power supply line)...2427
Failure code [DW7DKA] (Hydraulic drive fan neutral solenoid: Disconnection)...2428
Failure code [DW7DKB] (Hydraulic drive fan neutral solenoid: Short circuit)...2429
Failure code [DW7DKY] (Hydraulic drive fan neutral solenoid: Short circuit with power supply line)...2430
Failure code [DWM1KA] (Work equipment neutral lock solenoid: Disconnection)...2431
Failure code [DWM1KB] (Work equipment neutral lock solenoid: Short circuit)...2433
Failure code [DWM1KY] (Work equipment neutral lock solenoid: Short circuit with power supply line)...2435
Failure code [DWN6KA] (Lift arm raise magnet detent solenoid: Disconnection)...2437
Failure code [DWN6KB] (Lift arm raise magnet detent solenoid: Short circuit)...2439
Failure code [DWN6KY] (Lift arm raise magnet detent solenoid: Short circuit with power supply line)...2441
Failure code [DWN7KA] (Lift arm float magnet detent solenoid: Disconnection)...2443
Failure code [DWN7KB] (Lift arm float magnet detent solenoid: Short circuit)...2445
Failure code [DWN7KY] (Lift arm float magnet detent solenoid: Short circuit with power supply line)...2447
Failure code [DWN8KA] (Bucket tilt magnet detent solenoid: Disconnection)...2449
Failure code [DWN8KB] (Bucket tilt magnet detent solenoid: Short circuit)...2451
Failure code [DWN8KY] (Bucket tilt magnet detent solenoid: Shorted with the power source)...2453
Failure code [DX16KA] (Fan pump EPC solenoid: Disconnection)...2455
Failure code [DX16KB] (Fan pump EPC solenoid: Short circuit)...2456
Failure code [DX16KY] (Fan pump EPC solenoid: Short circuit with power supply line)...2457
Failure code [DXH1KA] (Lockup ECMV solenoid: Disconnection)...2459
Failure code [DXH1KB] (Lockup ECMV solenoid: Short circuit)...2461
Failure code [DXH1KY] (Lockup ECMV solenoid: Short circuit with power supply line)...2463
Failure code [DXH4KA] (1st clutch ECMV solenoid: Disconnection)...2465
Failure code [DXH4KB] (1st clutch ECMV solenoid: Short circuit)...2467
Failure code [DXH4KY] (1st clutch ECMV solenoid: Short circuit with power supply line)...2469
Troubleshooting by failure code (Display of code), Part 10...2472
Failure code [DXH5KA] (2nd clutch ECMV solenoid: Disconnection)...2475
Failure code [DXH5KB] (2nd clutch ECMV solenoid: Short circuit)...2477
Failure code [DXH5KY] (2nd clutch ECMV solenoid: Short circuit with power supply line)...2479
Failure code [DXH6KA] (3rd clutch ECMV solenoid: Disconnection)...2481
Failure code [DXH6KB] (3rd clutch ECMV solenoid: Short circuit)...2483
Failure code [DXH6KY] (3rd clutch ECMV solenoid: Short circuit with power supply line)...2485
Failure code [DXH7KA] (R clutch ECMV solenoid: Disconnection)...2487
Failure code [DXH7KB] (R clutch ECMV solenoid: Short circuit)...2489
Failure code [DXH7KY] (R clutch ECMV solenoid: Short circuit with power supply line)...2491
Failure code [DXH8KA] (F clutch ECMV solenoid: Disconnection)...2493
Failure code [DXH8KB] (F clutch ECMV solenoid: Short circuit)...2495
Failure code [DXH8KY] (F clutch ECMV solenoid: Short circuit with power supply line)...2497
Failure code [DXHHKA] (4th clutch ECMV solenoid: Disconnection)...2499
Failure code [DXHHKB] (4th clutch ECMV solenoid: Short circuit)...2501
Failure code [DXHHKY] (4th clutch ECMV solenoid: Short circuit with power supply line)...2503
Failure code [DXHLKA] (Joystick steering right EPC solenoid: Disconnection)...2505
Failure code [DXHLKB] (Joystick steering right EPC solenoid: Short circuit)...2507
Failure code [DXHLKY] (Joystick steering right EPC solenoid: Short circuit with power supply line)...2509
Failure code [DXHMKA] (Joystick steering left EPC solenoid: Disconnection)...2511
Failure code [DXHMKB] (Joystick steering left EPC solenoid: Short circuit)...2513
Failure code [DXHMKY] (Joystick steering left EPC solenoid: Short circuit with power supply line)...2515
Failure code [DY30MA] Motor-driven emergency steering pump failure (During operation of machine)...2517
Failure code [DY30MC] Motor-driven emergency steering pump failure (Malfunction in manual mode)...2520
Failure code [DY30ME] Emergency steering: Operating for more than 1 minute...2523
Troubleshooting of electrical system (E-mode)...2528
Installing positions of fuses...2530
Information in troubleshooting table...2533
E-1 Engine does not start...2535
E-2 Wiper does not operate...2541
E-3 Windshield washer does not operate...2545
E-4 Headlamp, clearance lamp, tail lamp, and license lamp do not light up or go off...2548
E-5 Working lamp does not light up or go off...2556
E-6 Turn signal lamp and hazard lamp do not light up or go off...2561
E-7 Brake lamp does not light or it keeps lighting up...2567
E-8 Backup lamp does not light or it keeps lighting up...2569
E-9 Backup buzzer does not sound or it keeps sounding...2571
E-10 Horn does not sound or it keeps sounding...2573
E-11 Alarm buzzer does not sound or it keeps sounding...2575
E-12 Air conditioner does not operate or stop...2577
E-13 The KOMTRAX system does not work properly...2580
E-14 When kick-down switch is turned ON, kick-down operation does not start...2583
E-15 When hold switch is pressed, holding operation does not start...2585
E-16 Transmission is kept in neutral, or brake drags when directional lever is operated while parking brake is applied...2587
E-17 Transmission cut-off mode cannot be set or reset...2589
E-18 Transmission cut-off set cannot be reset...2591
E-19 FNR switch mode cannot be set or reset...2593
E-20 Fan reverse function cannot be used or reset...2595
E-21 Discharge from loader pump does not rise from minimum level...2597
E-22 ECSS function cannot be used or reset...2599
E-23 When parking brake is turned ON, parking brake indicator lamp does not light up...2601
E-24 When emergency brake operates, brake oil pressure caution lamp does not operate...2605
E-25 Air cleaner clogging indicator lamp does not light up...2607
E-26 Radiator coolant level caution lamp does not light up...2609
E-27 Hydraulic oil temperature gauge does not rise and hydraulic oil temperature caution lamp does not light up...2610
E-28 Torque converter oil temperature gauge does not rise and torque converter oil temperature caution lamp does not light up...2611
E-29 Steering oil pressure caution lamp does not light up...2613
E-30 Abnormality in ■ switch (panel switch 1) input...2615
E-31 Abnormality in ◇ switch (panel switch 2) input...2617
E-32 Abnormality in < switch (panel switch 3) input...2619
E-33 Abnormality in > switch (panel switch 4) input...2621
E-34 Air conditioner does not operate...2623
E-35 Air is not cooled...2627
E-36 No air comes out or air flow is abnormal...2631
E-37 Temperature cannot be controlled...2637
E-38 Spurting out mode cannot be switched...2641
E-39 Recirc/Fresh cannot be changed over...2645
Troubleshooting of hydraulic and mechanical system (H-mode)...2648
Method of using troubleshooting chart...2650
Table of failure modes and causes...2653
H-1 The machine does not start...2657
H-2 Torque converter lockup is not switched off (engine stalls) [Machine with lockup clutch (if equipped)]...2659
H-3 Torque converter lockup is not switched on [Machine with lockup clutch (if equipped)]...2660
H-4 The travel speed is slow, the thrusting force is weak, the uphill traveling power is weak, and the gear is not shifted...2661
H-5 Shocks are large at the times of starting and shifting gear...2663
H-6 Time lag is large at the times of starting and shifting gear...2665
H-7 The torque converter oil temperature is high...2667
H-8 Steering does not turn...2668
H-9 Steering does not turn [Machine with joystick steering (if equipped)]...2669
H-10 Steering response is low...2670
H-11 Turning, response of steering is poor [machine with joystick steering (if equipped)]...2671
H-12 Steering is heavy...2672
H-13 When machine turns, it shakes or makes large shocks...2673
H-14 When machine turns, it shakes or makes large shocks [machine with joystick steering (if equipped)]...2674
H-15 The wheel brake does not work or does not work well...2675
H-16 The wheel brake is not released or it drags...2676
H-17 The parking brake does not work or does not work well...2677
H-18 The parking brake is not released or it drags (including emergency release system)...2678
H-19 Lift arm does not rise...2679
H-20 Lift arm speed is low or rising force of lift arm is insufficient...2680
H-21 When rising, the lift arm comes to move slowly at specific height...2681
H-22 The lift arm cylinder cannot hold down the bucket (Bucket floats)...2681
H-23 Hydraulic drifts of the lift arm is large...2681
H-24 The lift arm wobbles during operation...2681
H-25 Bucket does not tilt back...2682
H-26 Bucket speed is low or tilting back force is insufficient...2683
H-27 The bucket comes to operate slowly in the midst of tilting-back...2684
H-28 The bucket cylinder cannot hold down the bucket...2684
H-29 Hydraulic drifts of the bucket is large...2684
H-30 The bucket wobbles during travel with cargo (The work equipment valve is set to “HOLD”)...2684
H-31 Lift arm and bucket control levers do not move smoothly and are heavy...2685
H-32 During operation of the machine, engine speed lowers remarkably or engine stalls...2686
H-33 Large shock is made when work equipment starts and stops...2686
H-34 When work equipment circuit is relieved singly, other work equipment moves...2686
H-35 ECSS does not operate, and pitching, bouncing occur...2687
Troubleshooting of engine (S-mode)...2690
Method of using troubleshooting charts...2692
S-1 Engine does not start easily...2695
S-2 Engine does not start...2696
S-3 Engine does not pick up smoothly...2699
S-4 Engine stops during operations...2700
S-5 Engine does not rotate smoothly...2701
S-6 Engine lacks output (or lacks power)...2702
S-7 Exhaust smoke is black (Incomplete combustion)...2703
S-8 Oil consumption is excessive (or exhaust smoke is blue)...2704
S-9 Engine oil becomes contaminated quickly...2705
S-10 Fuel consumption is excessive...2706
S-11 Coolant contains oil (blows back or reduces)...2707
S-12 Oil pressure drops...2708
S-13 Oil level rises (Water, fuel in oil)...2709
S-14 Coolant temperature rises too high (Overheating)...2710
S-15 Abnormal noise is made...2711
S-16 Vibration is excessive...2712
50 Disassembly and assembly...0
General information on disassembly and assembly...2714
How to read this manual...2715
Coating materials list...2717
Special tools list...2720
Sketches of special tools...2723
Engine and cooling system...2738
Removal and installation of fuel supply pump assembly...2739
Removal and installation of fuel injector assembly...2742
Removal and installation of cylinder head assembly...2751
Removal and installation of engine hood and radiator guard assembly...2764
Removal and installation of radiator assembly...2766
Removal and installation of air aftercooler assembly...2768
Removal and installation of hydraulic oil cooler assembly...2770
Removal and installation of engine assembly...2771
Removal and installation of front seal assembly...2776
Removal and installation of rear oil seal assembly...2778
Removal and installation of cooling fan and fan motor assembly...2783
Removal and installation of fuel tank assembly...2786
Power train, Part 1...2790
Removal and installation of torque converter and transmission assembly...2791
Disassembly and assembly of torque converter assembly (Standard specification)...2796
Disassembly and assembly of torque converter assembly (Lock-up specification)...2800
Disassembly and assembly of transmission assembly...2807
Disassembly and assembly of transmission clutch pack assembly...2822
Disassembly and assembly of parking brake assembly...2838
Power train, Part 2...2848
Removal and installation of front axle assembly...2849
Removal and installation of rear axle assembly...2851
Disassembly and assembly of axle housing...2855
Disassembly and assembly of differential assembly...2864
Steering system...2886
Removal and installation of steering demand valve assembly...2887
Removal and installation of steering valve oil seal...2889
Brake system...2892
Removal and installation of parking brake disc and plate...2893
Undercarriage and frame...2898
Removal and installation of center hinge pin...2899
Removal and installation of counterweight...2907
Hydraulic system...2910
Removal and installation of work equipment control valve assembly...2911
Removal and installation of power train pump and work equipment pump assembly...2914
Removal and installation of steering pump and cooling fan pump assembly...2915
Removal and installation of hydraulic tank assembly...2916
Work equipment...2920
Removal and installation of work equipment assembly...2921
Disassembly and assembly of hydraulic cylinder assembly...2926
Cab and its attachments...2934
Removal and installation of operator's cab and floor frame assembly...2935
Removal and installation of operator's cab glass (stuck glass)...2939
Disassembly and assembly of operator's seat assembly (Standard specification)...2947
Disassembly and assembly of operator's seat assembly (Manufactured by GRAMMER)...2956
Removal and installation of air conditioner unit assembly...2989
Electrical system...2996
Removal and installation of engine controller assembly...2997
Removal and installation of KOMTRAX terminal assembly...2998
90 Diagrams and drawings...0
Hydraulic diagrams and drawings...3000
Power train hydraulic circuit diagram...3001
Automatic greasing circuit diagram...3005
Hydraulic circuit diagram...3008
Electrical diagrams and drawings...3011
Electrical circuit diagram...3013
Work equipment controller system electrical circuit diagram...3027
Connector list and sterogram...3028
SEN00837-03 - Wheel Loader GALEO WA430-6 Shop Manual...3031
COVER...3031
00 Index and foreword...3033
Index...3033
Composition of shop manual...3034
Table of contents...3036
Foreword and general information...3051
Safety notice...3052
How to read the shop manual...3057
Explanation of terms for maintenance standard...3059
Handling electric equipment and hydraulic component...3061
How to read electric wire code...3073
Precautions when carrying out operation...3076
Method of disassembling and connecting push-pull type coupler...3079
Standard tightening torque table...3082
Conversion table...3086
01 Specification...3093
Specification and technical data...3093
Specification and technical data...3095
Specification dimension drawing...3095
Specifications...3096
Weight table...3100
Table of fuel, coolant and lubricants...3102
10 Structure, function and maintenance standard...3105
Engine and cooling system...3105
Engine and cooling system...3106
Engine mount and transmission mount...3106
Cooling system...3107
Cooling fan pump...3108
Cooling fan motor...3116
Power train...3123
Power train...3125
Power train...3125
Power train system diagram...3126
Drive shaft...3128
Power train piping diagram...3129
Torque converter...3130
Transmission...3134
Flow control valve...3150
Transmission control valve...3154
ECMV...3156
Main relief valve and torque converter relief valve...3160
Axle...3162
Differential...3164
Limited slip differential...3170
Final drive...3176
Steering system...3183
Steering system...3184
Steering piping diagram...3184
Steering column...3185
Steering pump...3186
Steering valve...3197
Orbit-roll valve...3212
Stop valve...3216
Steering relief valve...3217
Steering cylinder...3218
Emergency steering motor...3220
Emergency steering pump...3221
Brake system...3223
Brake system...3224
Brake piping diagram...3224
Charge valve...3225
Brake valve...3232
Accumulator (for brake)...3237
Brake...3238
Parking brake control...3243
Parking brake...3244
Parking brake solenoid valve...3246
Emergency parking brake release valve...3248
Undercarriage and frame...3251
Undercarriage and frame...3252
Axle mount and center hinge pin...3252
Tires...3256
Hydraulic system, Part 1...3259
Hydraulic system, Part 1...3260
Hydraulic piping diagram...3260
Work equipment control lever linkage...3263
Hydraulic tank...3264
Power train pump...3266
Work equipment pump...3267
Work equipment control valve...3278
CLSS...3292
Each function and operation of each valve...3296
Hydraulic system, Part 2...3319
Hydraulic system, Part 2...3320
PPC valve...3320
Stabilizer valve...3326
Attachment PPC valve...3332
Accumulator (for PPC circuit)...3334
Accumulator (for ECSS)...3335
Work equipment...3337
Work equipment...3338
Work equipment linkage...3338
Bucket...3340
Bucket positioner and boom kick-out...3341
Work equipment cylinder...3347
Cab and its attachments...3349
Cab and its attachments...3351
Cab...3351
Air conditioner...3352
Electrical system, Part 1...3371
Electrical system, Part 1...3372
Machine monitor system...3372
Machine monitor...3377
Electrical system, Part 2...3399
Electrical system, Part 2...3400
Electrical system (Transmission controller system)...3400
Transmission controller...3432
Electrical system, Part 3...3435
Electrical system, Part 3...3436
Electric transmission control...3436
Kickdown switch and hold switch...3440
KOMTRAX terminal system...3442
Engine starting circuit...3444
Engine stopping circuit...3446
Preheating circuit...3447
Engine power mode selector circuit...3448
Engine output derating function...3449
Automatic warm-up function...3449
Parking brake circuit...3450
Sensor...3452
20 Standard value table...3461
Standard service value table...3462
Standard value table for engine...3462
Standard value table for chassis...3463
30 Testing and adjusting...3471
Testing and adjusting, Part 1...3471
Testing and adjusting, Part 1...3473
Tools for testing, adjusting, and troubleshooting...3473
Measuring engine speed...3476
Measuring exhaust gas color...3478
Measuring exhaust temperature...3479
Adjusting valve clearance...3481
Testing compression pressure...3483
Measuring blow-by pressure...3486
Measuring engine oil pressure...3487
Measuring intake air (boost) pressure...3488
Handling fuel system equipment...3489
Releasing residual pressure in fuel system...3489
Testing fuel pressure...3490
Testing fuel return and leak amount...3494
Bleeding air from fuel circuit...3496
Testing leakage in fuel system...3497
Handling reduced cylinder mode operation...3498
Handling no-injection cranking operation...3498
Handling controller high-voltage circuit...3499
Check of muffler and muffler stack for looseness and damage...3500
Check of muffler function...3500
Check of installed condition of cylinder head and manifolds...3501
Check of engine piping for damage and looseness...3501
Testing and adjusting air conditioner compressor belt tension...3502
Adjusting transmission speed sensor...3503
Adjusting directional lever length...3504
Measuring directional lever...3505
Measuring and adjusting power train oil pressure...3506
Procedure for flushing torque converter and transmission hydraulic circuit...3520
Method of moving machine when transmission valve is broken...3521
Check of axle final drive for oil leakage...3523
Check of drive shafts for looseness, play and damage...3523
Testing and adjusting steering stop valve...3524
Testing and adjusting steering wheel...3526
Testing steering oil pressure...3528
Bleeding air from steering circuit...3531
Testing and adjusting, Part 2...3533
Testing and adjusting, Part 2...3535
Testing hydraulic drive fan...3535
Bleeding air from hydraulic drive fan circuit...3537
Measuring brake pedal...3539
Testing and adjusting brake pedal linkage...3540
Measuring brake performance...3541
Testing and adjusting accumulator charge pressure...3542
Testing wheel brake oil pressure...3543
Measuring wear of wheel brake disc...3545
Bleeding air from wheel brake circuit...3546
Releasing residual pressure in brake accumulator circuit...3547
Testing parking brake performance...3548
Measuring parking brake oil pressure...3549
Testing wear of parking brake disc...3551
Method of releasing parking brake manually...3552
Measuring and adjusting work equipment control lever...3553
Measuring and adjusting work equipment PPC oil pressure...3554
Measuring and adjusting work equipment oil pressure...3557
Bleeding air from work equipment circuit...3561
Releasing residual pressure in work equipment circuit...3562
Testing and adjusting bucket positioner...3563
Testing and adjusting boom kick-out...3565
Checking proximity switch operation pilot lamp...3566
Procedure for testing diodes...3567
Preparation work for troubleshooting for electrical system...3568
Starting KOMTRAX terminal operations...3573
Indicator lamps of KOMTRAX terminal...3577
Adjusting machine monitor...3580
Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor...3581
Testing and adjusting, Part 3...3585
Testing and adjusting, Part 3...3586
Special functions of machine monitor (EMMS)...3586
Pm-click inspection table...3648
40 Troubleshooting...3651
Failure code table and fuse locations...3651
Failure code table and fuse locations...3652
Failure code table...3652
Fuse locations...3664
General information on troubleshooting...3669
General information on troubleshooting...3670
Points to remember when troubleshooting...3670
Sequence of events in troubleshooting...3671
Testing before troubleshooting...3672
Classification and procedures of troubleshooting...3673
Information contained in troubleshooting table...3676
Connection table for connector pin numbers...3678
T-branch box and T-branch adapter table...3701
Troubleshooting by failure code (Display of code), Part 1...3705
Troubleshooting by failure code (Display of code), Part 1...3707
Failure code [1500L0] (TORQFLOW transmission: Double meshing)...3707
Failure code [15SAL1] (ECMV F clutch: When command current is OFF, fill signal is ON)...3708
Failure code [15SALH] (ECMV F clutch: When command current is ON, fill signal is OFF)...3710
Failure code [15SBL1] (ECMV R clutch: When command current is OFF, fill signal is ON)...3712
Failure code [15SBLH] (ECMV R clutch: When command current is ON, fill signal is OFF)...3714
Failure code [15SEL1] (ECMV 1st clutch: When command current is OFF, fill signal is ON)...3716
Failure code [15SELH] (ECMV 1st clutch: When command current is ON, fill signal is OFF)...3718
Failure code [15SFL1] (ECMV 2nd clutch: When command current is OFF, fill signal is ON)...3720
Failure code [15SFLH] (ECMV 2nd clutch: When command current is ON, fill signal is OFF)...3722
Failure code [15SGL1] (ECMV 3rd clutch: When command current is OFF, fill signal is ON)...3724
Failure code [15SGLH] (ECMV 3rd clutch: When command current is ON, fill signal is OFF)...3726
Failure code [15SHL1] (ECMV 4th clutch: When command current is OFF, fill signal is ON)...3728
Failure code [15SHLH] (ECMV 4th clutch: When command current is ON, fill signal is OFF)...3730
Failure code [2F00MA] (Parking brake: Malfunction)...3732
Failure code [2G43ZG] (Accumulator: Low oil pressure)...3734
Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree)...3736
Troubleshooting by failure code (Display of code), Part 2...3739
Troubleshooting by failure code (Display of code), Part 2...3742
Failure code [AA1ANX] (Air cleaner: Clogging)...3742
Failure code [AB00L6] (Alternator: Signal disagrees with operating state of engine)...3744
Failure code [AB00MA] (Alternator: Malfunction)...3746
Failure code [B@BAZG] (Rotation derating by low engine oil pressure)...3748
Failure code [B@BAZK] (Engine oil: Low level)...3749
Failure code [B@BCNS] (Coolant: Overheating)...3750
Failure code [B@BCZK] (Coolant: Low level)...3752
Failure code [B@BEBF] (Water in fuel error)...3754
Failure code [B@C7NS] (Brake oil: Overheating)...3756
Failure code [b@CENS] (Torque converter oil: Overheating)...3758
Failure code [B@CENS] (Torque converter oil: Overheating)...3760
Failure code [B@HANS] (Hydraulic oil: Overheating)...3762
Failure code [CA111] (Abnormality in engine controller)...3764
Failure code [CA115] (Engine Ne or Bkup speed sensor error)...3765
Failure code [CA122] (Charge pressure sensor high error)...3766
Failure code [CA123] (Charge pressure sensor low error)...3768
Failure code [CA131] (Throttle sensor high error)...3770
Failure code [CA132] (Throttle sensor low error)...3772
Failure code [CA144] (Coolant sensor high error)...3774
Failure code [CA145] (Coolant sensor low error)...3776
Failure code [CA153] (Charge temperature sensor high error)...3778
Failure code [CA154] (Charge temperature sensor low error)...3780
Failure code [CA155] (Derating of speed by abnormally high charge temperature)...3782
Failure code [CA187] (Sensor power supply 2 low error)...3784
Failure code [CA221] (Atmospheric pressure sensor high error)...3786
Failure code [CA222] (Atmospheric sensor low error)...3788
Failure code [CA227] (Sensor power supply 2 high error)...3790
Failure code [CA234] (Engine overspeed)...3791
Failure code [CA238] (Ne speed sensor power supply error)...3792
Troubleshooting by failure code (Display of code), Part 3...3795
Troubleshooting by failure code (Display of code), Part 3...3797
Failure code [CA271] (IMV/PCV1 Short circuit)...3797
Failure code [CA272] (IMV/PCV1 Disconnection)...3798
Failure code [CA281] High pressure pump error...3800
Failure code [CA322] (Injector #1 open/short error)...3802
Failure code [CA323] (Injector #5 open/short error)...3804
Failure code [CA324] (Injector #3 open/short error)...3806
Failure code [CA325] (Injector #6 open/short error)...3808
Failure code [CA331] (Injector #2 open/short error)...3810
Failure code [CA332] (Injector #4 open/short error)...3812
Failure code [CA342] (Calibration code inconsistency)...3814
Failure code [CA351] (Injectors drive circuit error)...3815
Failure code [CA352] (Sensor power supply 1 low error)...3818
Failure code [CA386] (Sensor power supply 1 high error)...3820
Failure code [CA428] (Abnormally high level in water sensor)...3822
Failure code [CA429] (Abnormally low level in water sensor)...3824
Failure code [CA431] (Idle validation switch error)...3826
Failure code [CA432] (Idle validation action error)...3828
Failure code [CA435] (Engine oil pressure switch error)...3830
Failure code [CA441] (Battery voltage low error)...3831
Failure code [CA442] (Battery voltage high error)...3834
Failure code [CA449] Common rail pressure high error 2...3836
Failure code [CA451] (Common rail pressure sensor high error)...3838
Failure code [CA452] (Common rail pressure sensor low error)...3840
Failure code [CA488] (Derating of torque by abnormally high charge temperature)...3842
Failure code [CA553] (Common rail pressure high error 1)...3843
Failure code [CA559] (Supply pump pressure very low error)...3844
Failure code [CA689] (Engine Ne speed sensor error)...3846
Failure code [CA731] (Engine Bkup speed sensor phase error)...3848
Failure code [CA757] (All continuous data lost error)...3849
Failure code [CA778] (Engine Bkup speed sensor error)...3852
Failure code [CA1633] (KOMNET datalink timeout error)...3854
Failure code [CA2185] (Throttle sensor power supply voltage high error)...3856
Failure code [CA2186] (Throttle sensor power supply voltage low error)...3857
Troubleshooting by failure code (Display of code), Part 4...3859
Troubleshooting by failure code (Display of code), Part 4...3861
Failure code [CA2249] (Supply pump pressure very low error 2)...3861
Failure code [CA2265] (Abnormally high level in electric lift pump)...3862
Failure code [CA2266] (Abnormally low level in electric lift pump)...3864
Failure code [CA2311] (Abnormality in IMV solenoid)...3866
Failure code [CA2555] (Intake heater relay disconnection error)...3868
Failure code [CA2556] (Intake heater relay short circuit error)...3870
Failure code [D150KA] (Emergency steering relay: Disconnection)...3872
Failure code [D150KB] (Emergency steering relay: Short circuit)...3874
Failure code [D150KY] (Emergency steering relay: Short circuit with power supply line)...3876
Failure code [D160KA] (Backup lamp relay: Disconnection)...3878
Failure code [D160KB] (Backup lamp relay: Short circuit)...3880
Failure code [D160KZ] (Backup lamp relay: Disconnection or short circuit)...3882
Failure code [D191KA] (Joystick steering neutral safety relay: Disconnection)...3884
Failure code [D191KB] (Joystick steering neutral safety relay: Short circuit)...3886
Failure code [D191KY] (Joystick steering neutral safety relay: Short circuit with power supply line)...3888
Failure code [D192KA] (ECSS solenoid: Disconnection)...3890
Failure code [D192KB] (ECSS solenoid: Short circuit)...3891
Failure code [D192KY] (ECSS solenoid: Short circuit with power supply line)...3892
Failure code [D193KA] (Joystick steering solenoid cut relay: Disconnection)...3894
Failure code [D193KB] (Joystick steering solenoid cut relay: Short circuit)...3896
Failure code [D193KY] (Joystick steering solenoid cut relay: Short circuit with power supply line)...3898
Failure code [D5ZHKA] (Terminal C signal: Disconnection)...3901
Failure code [D5ZHKB] (Terminal C signal: Short circuit)...3905
Failure code [D5ZHKZ] (Terminal C signal: Disconnection or short circuit)...3908
Failure code [D5ZHL6] (Terminal C signal: Signal does not match engine running or stopped state)...3913
Failure code [DA80L4] (Auto grease controller: ON/OFF signals disagree)...3916
Failure code [DAF3KK] (Machine monitor: Low source voltage (input))...3918
Failure code [DAF5KP] (Machine monitor: Low output voltage)...3920
Failure code [DAFRKR] (CAN communication with machine monitor: Defective communication (Abnormality in target component system))...3924
Troubleshooting by failure code (Display of code), Part 5...3927
Troubleshooting by failure code (Display of code), Part 5...3930
Failure code [DAQ0KK] (Transmission controller: Low source voltage)...3930
Failure code [DAQ0KT] (Transmission controller: Abnormality in controller)...3932
Failure code [DAQ2KK] (Transmission controller load power supply line: Low source voltage (input))...3933
Failure code [DAQ9KQ] (Transmission controller model selection: Disagreement of model selection signals)...3935
Failure code [DAQRKR] (CAN communication with transmission controller: Defective communication (Abnormality in target component system))...3936
Failure code [DAQRMA] (Transmission controller option setting: Malfunction)...3938
Failure code [DB2RKR] (CAN communication with engine controller: Defective communication (Abnormality in target component system)...3940
Failure code [DB90KK] Work equipment controller: Low source voltage (input)...3942
Failure code [DB90KT] Work equipment controller: Abnormality in controller...3944
Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input)...3945
Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range...3947
Failure code [DB99KQ] (Work equipment controller model selection: Disagreement in model selection signals)...3950
Failure code [DB9RKR] CAN communication with work equipment controller: Defective communication (Abnormality in target component system))...3951
Failure code [DB9RMA] (Work equipment controller option setting: Malfunction)...3953
Failure code [DB9RMC] (CAN communication with transmission controller: Defective operation)...3954
Failure code [DD15LD] __ switch (Panel switch 1): Switch is kept pressed for long time...3958
Failure code [DD16LD] __ switch (Panel switch 2): Switch is kept pressed for long time...3960
Failure code [DD17LD] < switch (Panel switch 3): Switch is kept pressed for long time...3962
Failure code [DD18LD] > switch (Panel switch 4): Switch is kept pressed for long time...3964
Failure code [DD1ALD] Remote positioner raise/lower set switch (raise): Switch is kept pressed for long time...3966
Failure code [DD1BLD] Remote positioner raise/lower set switch (lower): Switch is kept pressed for long time...3968
Failure code [DD1CLD] Load meter subtotal switch: Switch is kept pressed for long time...3970
Failure code [DD1FLD] Load meter mode selector switch (A/B): Switch is kept pressed for long time...3972
Failure code [DD1GLD] Load meter mode selector switch (+/–): Switch is kept pressed for long time...3974
Failure code [DD1HLD] (Load meter display selector switch: Switch is kept pressed for long time)...3976
Failure code [DD1NLD] (Fan reverse switch: Switch is kept pressed for long time)...3978
Failure code [DD1NL4] (Fan automatic reverse switch: Switch is kept pressed for long time)...3980
Failure code [DDB6L4] (Parking brake switch (Neutralizer): ON/OFF signals disagree)...3982
Failure code [DDD1LD] (Remote positioner bucket angle set switch: Switch is kept pressed for long time)...3986
Troubleshooting by failure code (Display of code), Part 6...3989
Troubleshooting by failure code (Display of code), Part 6...3992
Failure code [DDE5MA] (Emergency steering drive switch: Malfunction)...3992
Failure code [DDK3KA] (Right FNR switch: Disconnection)...3994
Failure code [DDK4KA] (Joystick steering FNR switch: Disconnection)...3997
Failure code [DDK5L4] (Joystick steering shift-up/down switch: ON/OFF signals disagree)...4000
Failure code [DDK6KA] (FNR lever switch: Disconnection)...4002
Failure code [DDK6KB] (FNR lever switch: Short circuit)...4006
Failure code [DDT0L4] (Shift mode selector switch: ON/OFF signals disagree)...4008
Failure code [DDT4LD] (Transmission cut-off set switch: Switch is kept pressed for long time)...4010
Failure code [DDW9LD] (Kick-down switch: Switch is kept pressed for long time)...4012
Failure code [DDWLLD] (Hold switch: Switch is kept pressed for long time)...4014
Failure code [DDY0LD] (Load meter cancel switch: Switch is kept pressed for long time)...4016
Failure code [DF10KA] (Transmission shift lever switch: Disconnected)...4018
Failure code [DF10KB] (Transmission shift lever switch: Short circuit)...4022
Failure code [DGF1KA] (Transmission oil temperature sensor: Disconnected)...4024
Failure code [DGF1KB] (Transmission oil temperature sensor: Short circuit)...4026
Failure code [DGH2KX] (Hydraulic oil temperature sensor: Out of input signal range)...4028
Failure code [DGR2KA] (Rear brake oil temperature sensor: Disconnected)...4030
Failure code [DGR2KX] (Rear brake oil temperature sensor: Out of input signal range)...4032
Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range)...4034
Troubleshooting by failure code (Display of code), Part 7...4037
Troubleshooting by failure code (Display of code), Part 7...4040
Failure code [DHPCKX] (Lift arm cylinder bottom pressure sensor: Out of input signal range)...4040
Failure code [DHPDKX] (Lift arm cylinder head pressure sensor: Out of input signal range)...4042
Failure code [DHT1KX] (Transmission cut-off pressure sensor: Out of input signal range)...4044
Failure code [DHT8KA] (Steering pump pressure sensor: Disconnection)...4046
Failure code [DHT8KB] (Steering pump pressure sensor: Short circuit)...4048
Failure code [DK59KA] (Lift arm EPC lever potentiometer (Main): Disconnection)...4050
Failure code [DK59KY] (Lift arm EPC lever potentiometer (Main): Short circuit with power supply line)...4053
Failure code [DK59L8] (Lift arm EPC lever potentiometer (Main): Analog signals disagree)...4056
Failure code [DK5AKA] (Lift arm EPC lever potentiometer (Sub): Disconnection)...4059
Failure code [DK5AKY] (Lift arm EPC lever potentiometer (Sub): Short circuit with power supply line)...4062
Failure code [DK5BKA] (Bucket EPC lever potentiometer (Main): Disconnection)...4065
Failure code [DK5BKY] (Bucket EPC lever potentiometer (Main): Short circuit with power supply line)...4068
Failure code [DK5BL8] (Bucket EPC lever potentiometer (Main): Analog signals disagree)...4071
Failure code [DK5CKA] (Bucket EPC lever potentiometer (Sub): Disconnection)...4074
Failure code [DK5CKY] (Bucket EPC lever potentiometer (Sub): Short circuit with power supply line)...4077
Failure code [DK5DKA] (3-spool valve (attachment) EPC lever potentiometer (Main): Disconnection)...4080
Failure code [DK5DKY] (3-spool valve (attachment) EPC lever potentiometer (Main): Short circuit with power supply line)...4084
Failure code [DK5DL8] (3-spool valve (attachment) EPC lever potentiometer (Main): Analog signals disagree)...4086
Failure code [DK5EKA] (3-spool valve (attachment) EPC lever potentiometer (Sub): Disconnection)...4089
Failure code [DK5EKY] (3-spool valve (attachment) EPC lever potentiometer (Sub): Short circuit with power supply line)...4092
Troubleshooting by failure code (Display of code), Part 8...4095
Troubleshooting by failure code (Display of code), Part 8...4097
Failure code [DK5FKA] (Joystick steering EPC lever potentiometer (Main): Disconnection)...4097
Failure code [DK5FKY] (Joystick steering EPC lever potentiometer (Main): Short circuit with power supply line)...4100
Failure code [DK5GKA] (Joystick steering EPC lever potentiometer (Sub): Disconnection)...4102
Failure code [DK5GKY] (Joystick steering EPC lever potentiometer (Sub): Short circuit with power supply line)...4106
Failure code [DK5FL8] (Joystick steering EPC lever potentiometer (Main): Analog signals disagree)...4108
Failure code [DKA0KA] (Lift arm angle sensor: Disconnection)...4112
Failure code [DKA0KY] (Lift arm angle sensor: Short circuit with power supply line)...4114
Failure code [DKA0L0] (Lift arm angle sensor: Double meshing)...4116
Failure code [DLT3KA] (Transmission output shaft speed sensor: Disconnection)...4118
Failure code [DLT3LC] (Transmission output shaft speed sensor: Out of input signal range)...4120
Failure code [DT20KB] (Transmission cut-off indicator lamp: Short circuit)...4122
Failure code [DUM1KB] (Remote positioner raise set indicator lamp: Short circuit)...4124
Failure code [DUM2KB] (Remote positioner lower set indicator lamp: Short circuit)...4126
Failure code [DV00KB] (Alarm buzzer: Short circuit)...4128
Failure code [DW4PKA] (Lift arm raise EPC solenoid: Disconnection)...4130
Failure code [DW4PKB] (Lift arm raise EPC solenoid: Short circuit)...4132
Failure code [DW4PKY] (Lift arm raise EPC solenoid: Short circuit with power supply line)...4134
Failure code [DW4QKA] (Lift arm lower EPC solenoid: Disconnection)...4136
Failure code [DW4QKB] (Lift arm lower EPC solenoid: Short circuit)...4137
Failure code [DW4QKY] (Lift arm lower EPC solenoid: Short circuit with power supply line)...4138
Failure code [DW4RKA] (Bucket tilt EPC solenoid: Disconnection)...4140
Failure code [DW4RKB] (Bucket tilt EPC solenoid: Short circuit)...4141
Failure code [DW4RKY] (Bucket tilt EPC solenoid: Short circuit with power supply line)...4142
Troubleshooting by failure code (Display of code), Part 9...4145
Troubleshooting by failure code (Display of code), Part 9...4147
Failure code [DW4SKA] (Bucket dump EPC solenoid: Disconnection)...4147
Failure code [DW4SKB] (Bucket dump EPC solenoid: Short circuit)...4148
Failure code [DW4SKY] (Bucket dump EPC solenoid: Short circuit with power supply line)...4149
Failure code [DW7BKA] (Fan reverse solenoid: Disconnection)...4151
Failure code [DW7BKB] (Fan reverse solenoid: Short circuit)...4152
Failure code [DW7BKY] (Fan reverse solenoid: Short circuit with power supply line)...4154
Failure code [DW7DKA] (Hydraulic drive fan neutral solenoid: Disconnection)...4156
Failure code [DW7DKB] (Hydraulic drive fan neutral solenoid: Short circuit)...4157
Failure code [DW7DKY] (Hydraulic drive fan neutral solenoid: Short circuit with power supply line)...4158
Failure code [DWM1KA] (Work equipment neutral lock solenoid: Disconnection)...4160
Failure code [DWM1KB] (Work equipment neutral lock solenoid: Short circuit)...4162
Failure code [DWM1KY] (Work equipment neutral lock solenoid: Short circuit with power supply line)...4164
Failure code [DWN6KA] (Lift arm raise magnet detent solenoid: Disconnection)...4166
Failure code [DWN6KB] (Lift arm raise magnet detent solenoid: Short circuit)...4168
Failure code [DWN6KY] (Lift arm raise magnet detent solenoid: Short circuit with power supply line)...4170
Failure code [DWN7KA] (Lift arm float magnet detent solenoid: Disconnection)...4172
Failure code [DWN7KB] (Lift arm float magnet detent solenoid: Short circuit)...4174
Failure code [DWN7KY] (Lift arm float magnet detent solenoid: Short circuit with power supply line)...4176
Failure code [DWN8KA] (Bucket tilt magnet detent solenoid: Disconnection)...4178
Failure code [DWN8KB] (Bucket tilt magnet detent solenoid: Short circuit)...4180
Failure code [DWN8KY] (Bucket tilt magnet detent solenoid: Shorted with the power source)...4182
Failure code [DX16KA] (Fan pump EPC solenoid: Disconnection)...4184
Failure code [DX16KB] (Fan pump EPC solenoid: Short circuit)...4185
Failure code [DX16KY] (Fan pump EPC solenoid: Short circuit with power supply line)...4186
Failure code [DXH1KA] (Lockup ECMV solenoid: Disconnection)...4188
Failure code [DXH1KB] (Lockup ECMV solenoid: Short circuit)...4190
Failure code [DXH1KY] (Lockup ECMV solenoid: Short circuit with power supply line)...4192
Failure code [DXH4KA] (1st clutch ECMV solenoid: Disconnection)...4194
Failure code [DXH4KB] (1st clutch ECMV solenoid: Short circuit)...4196
Failure code [DXH4KY] (1st clutch ECMV solenoid: Short circuit with power supply line)...4198
Troubleshooting by failure code (Display of code), Part 10...4201
Troubleshooting by failure code (Display of code), Part 10...4204
Failure code [DXH5KA] (2nd clutch ECMV solenoid: Disconnection)...4204
Failure code [DXH5KB] (2nd clutch ECMV solenoid: Short circuit)...4206
Failure code [DXH5KY] (2nd clutch ECMV solenoid: Short circuit with power supply line)...4208
Failure code [DXH6KA] (3rd clutch ECMV solenoid: Disconnection)...4210
Failure code [DXH6KB] (3rd clutch ECMV solenoid: Short circuit)...4212
Failure code [DXH6KY] (3rd clutch ECMV solenoid: Short circuit with power supply line)...4214
Failure code [DXH7KA] (R clutch ECMV solenoid: Disconnection)...4216
Failure code [DXH7KB] (R clutch ECMV solenoid: Short circuit)...4218
Failure code [DXH7KY] (R clutch ECMV solenoid: Short circuit with power supply line)...4220
Failure code [DXH8KA] (F clutch ECMV solenoid: Disconnection)...4222
Failure code [DXH8KB] (F clutch ECMV solenoid: Short circuit)...4224
Failure code [DXH8KY] (F clutch ECMV solenoid: Short circuit with power supply line)...4226
Failure code [DXHHKA] (4th clutch ECMV solenoid: Disconnection)...4228
Failure code [DXHHKB] (4th clutch ECMV solenoid: Short circuit)...4230
Failure code [DXHHKY] (4th clutch ECMV solenoid: Short circuit with power supply line)...4232
Failure code [DXHJKA] (3-spool valve extend EPC solenoid: Disconnection)...4234
Failure code [DXHJKB] (3-spool valve extend EPC solenoid: Short circuit)...4236
Failure code [DXHJKY] (3-spool valve extend EPC solenoid: Short circuit with power supply line)...4238
Failure code [DXHKKA] (3-spool valve retract EPC solenoid: Disconnection)...4240
Failure code [DXHKKB] (3-spool valve retract EPC solenoid: Short circuit)...4242
Failure code [DXHKKY] (3-spool valve retract EPC solenoid: Short circuit with power supply line)...4244
Failure code [DXHLKA] (Joystick steering right EPC solenoid: Disconnection)...4246
Failure code [DXHLKB] (Joystick steering right EPC solenoid: Short circuit)...4248
Failure code [DXHLKY] (Joystick steering right EPC solenoid: Short circuit with power supply line)...4250
Failure code [DXHMKA] (Joystick steering left EPC solenoid: Disconnection)...4252
Failure code [DXHMKB] (Joystick steering left EPC solenoid: Short circuit)...4254
Failure code [DXHMKY] (Joystick steering left EPC solenoid: Short circuit with power supply line)...4256
Troubleshooting of electrical system (E-mode)...4259
Troubleshooting of electrical system (E-mode)...4261
Installing positions of fuses...4261
Information in troubleshooting table...4264
E-1 Engine does not start...4265
E-2 Wiper does not operate...4272
E-3 Windshield washer does not operate...4276
E-4 Headlamp, clearance lamp, tail lamp, and license lamp do not light up or go off...4279
E-5 Working lamp does not light up or go off...4287
E-6 Turn signal lamp and hazard lamp do not light up or go off...4292
E-7 Brake lamp does not light or it keeps lighting up...4298
E-8 Backup lamp does not light or it keeps lighting up...4300
E-9 Backup buzzer does not sound or it keeps sounding...4302
E-10 Horn does not sound or it keeps sounding...4304
E-11 Alarm buzzer does not sound or it keeps sounding...4306
E-12 Air conditioner does not operate or stop...4308
E-13 The KOMTRAX system does not work properly...4311
Troubleshooting of hydraulic and mechanical system (H-mode)...4315
Troubleshooting of hydraulic and mechanical system (H-mode)...4317
Method of using troubleshooting chart...4317
Table of failure modes and causes...4320
H-1 The machine does not start...4324
H-2 Torque converter lockup is not switched off (engine stalls) [Machine with lockup clutch (if equipped)]...4326
H-3 Torque converter lockup is not switched on [Machine with lockup clutch (if equipped)]...4327
H-4 The travel speed is slow, the thrusting force is weak, the uphill traveling power is weak, and the gear is not shifted...4328
H-5 Shocks are large at the times of starting and shifting gear...4330
H-6 Time lag is large at the times of starting and shifting gear...4332
H-7 The torque converter oil temperature is high...4334
H-8 Steering does not turn...4335
H-9 Steering does not turn [Machine with joystick steering (if equipped)]...4336
H-10 Steering response is low...4337
H-11 Turning, response of steering is poor [machine with joystick steering (if equipped)]...4338
H-12 Steering is heavy...4339
H-13 When machine turns, it shakes or makes large shocks...4340
H-14 When machine turns, it shakes or makes large shocks [machine with joystick steering (if equipped)]...4341
H-15 The wheel brake does not work or does not work well...4342
H-16 The wheel brake is not released or it drags...4343
H-17 The parking brake does not work or does not work well...4344
H-18 The parking brake is not released or it drags (including emergency release system)...4345
H-19 Lift arm does not rise...4346
H-20 Lift arm speed is low or rising force of lift arm is insufficient...4347
H-21 When rising, the lift arm comes to move slowly at specific height...4348
H-22 The lift arm cylinder cannot hold down the bucket (Bucket floats)...4348
H-23 Hydraulic drifts of the lift arm is large...4348
H-24 The lift arm wobbles during operation...4348
H-25 Bucket does not tilt back...4349
H-26 Bucket speed is low or tilting back force is insufficient...4350
H-27 The bucket comes to operate slowly in the midst of tilting-back...4351
H-28 The bucket cylinder cannot hold down the bucket...4351
H-29 Hydraulic drifts of the bucket is large...4351
H-30 The bucket wobbles during travel with cargo (The work equipment valve is set to “HOLD”)...4351
H-31 Lift arm and bucket control levers do not move smoothly and are heavy...4352
H-32 During operation of the machine, engine speed lowers remarkably or engine stalls...4353
H-33 Large shock is made when work equipment starts and stops...4353
H-34 When work equipment circuit is relieved singly, other work equipment moves...4353
H-35 ECSS does not operate, and pitching, bouncing occur...4354
Troubleshooting of engine (S-mode)...4357
Troubleshooting of engine (S-mode)...4359
Method of using troubleshooting chart...4359
S-1 Engine does not start easily...4362
S-2 Engine does not start...4363
S-3 Engine does not pick up smoothly...4366
S-4 Engine stops during operations...4367
S-5 Engine does not rotate smoothly...4368
S-6 Engine lacks output (or lacks power)...4369
S-7 Exhaust smoke is black (Incomplete combustion)...4370
S-8 Oil consumption is excessive (or exhaust smoke is blue)...4371
S-9 Engine oil becomes contaminated quickly...4372
S-10 Fuel consumption is excessive...4373
S-11 Coolant contains oil (blows back or reduces)...4374
S-12 Oil pressure drops...4375
S-13 Oil level rises (Water, fuel in oil)...4376
S-14 Coolant temperature rises too high (Overheating)...4377
S-15 Abnormal noise is made...4378
S-16 Vibration is excessive...4379
50 Disassembly and assembly1...4381
General information on disassembly and assembly...4381
General information on disassembly and assembly...4382
How to read this manual...4382
Coating materials list...4384
Special tools list...4387
Sketches of special tools...4391
Engine and cooling system...4405
Engine and cooling system...4406
Removal and installation of fuel supply pump assembly...4406
Removal and installation of fuel injector assembly...4409
Removal and installation of cylinder head assembly...4417
Removal and installation of engine hood and radiator guard assembly...4429
Removal and installation of radiator assembly...4431
Removal and installation of air aftercooler assembly...4433
Removal and installation of hydraulic oil cooler assembly...4435
Removal and installation of engine assembly...4436
Removal and installation of front seal assembly...4441
Removal and installation of rear oil seal assembly...4443
Removal and installation of cooling fan and fan motor assembly...4448
Removal and installation of fuel tank assembly...4451
Power train, Part 1...4455
Power train, Part 1...4456
Removal and installation of torque converter and transmission assembly...4456
Disassembly and assembly of torque converter assembly (Standard specification)...4461
Disassembly and assembly of torque converter assembly (Lock-up specification)...4465
Disassembly and assembly of transmission assembly...4472
Disassembly and assembly of transmission clutch pack assembly...4487
Disassembly and assembly of parking brake assembly...4503
Power train, Part 2...4511
Power train, Part 2...4512
Removal and installation of front axle assembly...4512
Removal and installation of rear axle assembly...4514
Disassembly and assembly of axle housing...4518
Disassembly and assembly of differential assembly...4528
Steering system...4549
Steering system...4550
Removal and installation of steering demand valve assembly...4550
Brake system...4553
Brake system...4554
Removal and installation of parking brake disc and plate...4554
Undercarriage and frame...4559
Undercarriage and frame...4560
Removal and installation of center hinge pin...4560
Removal and installation of counterweight...4568
Hydraulic system...4571
Hydraulic system...4572
Removal and installation of work equipment control valve assembly...4572
Removal and installation of power train pump and work equipment pump assembly...4575
Removal and installation of steering pump and cooling fan pump assembly...4576
Removal and installation of hydraulic tank assembly...4577
Work equipment...4581
Work equipment...4582
Removal and installation of work equipment assembly...4582
Disassembly and assembly of hydraulic cylinder assembly...4587
Cab and its attachments...4597
Cab and its attachments...4598
Removal and installation of operator's cab and floor frame assembly...4598
Removal and installation of operator's cab glass (stuck glass)...4601
Disassembly, assembly of operator's seat assembly...4609
Removal and installation of air conditioner unit assembly...4618
Electrical system...4625
Electrical system...4626
Removal and installation of engine controller assembly...4626
Removal and installation of KOMTRAX terminal assembly...4627
90 Diagrams and drawings...4629
Hydraulic diagrams and drawings...4629
Hydraulic diagrams and drawings...4630
Power train hydraulic circuit diagram...4630
Hydraulic circuit diagram...4633
Electrical diagrams and drawings...4636
Electrical diagrams and drawings...4638
Electrical circuit diagram (1/2)...4638
Electrical circuit diagram (2/2)...4639
Connector arrangement diagram...4640





