Komatsu PC450 450LC-6K Shop Manual EEBM001304 – PDF DOWNLOAD

MACHINE MODEL PC450-6K PC450LC-6K

SERIAL NUMBER
K30001 and up
K30001 and up

STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to
give an understanding of the structure, but also serves as reference material for
troubleshooting.

TESTING AND ADJUSTING
This section explains checks to be made before and after performing repairs, as well
as adjustments to be made at completion of the checks and repairs.
Troubleshooting charts correlating “Problems” to “Causes” are also included in this
section.

DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling
or assembling each component, as well as precautions to be taken for these operations.

MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.

MAIN MENU 0
COVER 1
CONTENTS 2
SAFETY 7
SAFETY NOTICE 7
FOREWARD 9
GENERAL 9
HOW TO READ THE SHOP MANUAL 10
HOISTING INSTRUCTIONS 11
COATING MATERIALS 12
STANDARD TIGHTENING TORQUE 13
ELECTRIC WIRE CODE 15
CONVERSION TABLE 16
01 GENERAL 23
SPECIFICATION DRAWINGS 24
SPECIFICATIONS 25
WEIGHT TABLE 27
FUEL, COOLANT AND LUBRICANTS 29
10 STRUCTURE AND FUNCTION 32
PARTS RELATED TO ENGINE 33
RADIATOR, OIL COOLER 35
POWER TRAIN 36
FINAL DRIVE 37
SWING CIRCLE 38
SWING MACHINERY 39
TRACK FRAME, RECOIL SPRING 40
TRACK SHOE 41
HYDRAULIC PIPING DRAWING 42
HYDRAULIC CIRCUIT DIAGRAM 43
HYDRAULIC TANK, HYDRAULIC FILTER 44
HYDRAULIC PUMP 45
CONTROL VALVE 67
SUCTION SAFETY VALVE 75
CLSS 76
SWING MOTOR117
CENTER SWIVEL JOINT121
TRAVEL MOTOR122
VALVE CONTROL131
WORK EQUIPMENT, SWING PPC VALVE132
TRAVEL PPC VALVE136
SERVICE PPC VALVE140
PPC SAFETY LOCK VALVE143
PPC ACCUMULATOR143
PPC SHUTTLE VALVE, TRAVEL JUNCTION VALVE144
EPC SOLENOID VALVE151
FOR LS SELECT, BOOM HI 2 STAGE SAFETY VALVE, MERGE/FLOW DIVIDER, TRAVEL SPEED, SWING BRAKE151
FOR LS VALVE CONTROL153
BOOM SAFETY VALVE156
HYDRAULIC CYLINDER159
OVERLOAD WARNING DEVICE160
WORK EQUIPMENT164
ACTUAL ELECTRIC WIRING DIAGRAM166
ELECTRIC CIRCUIT DIAGRAM168
ENGINE CONTROL170
ELECTRONIC CONTROL SYSTEM176
MACHINE MONITOR SYSTEM200
BREAKER MODE HYDRAULIC PERFORMANCE208
20 TESTING AND ADJUSTING211
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS212
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS213
STANDARD VALUE TABLE FOR ELECTRICAL PARTS221
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING229
MEASURING EXHAUST COLOR230
VALVES AND INJECTORS231
MEASURING BLOW-BY PRESSURE237
TESTING AND ADJUSTING FUEL INJECTION TIMING239
MEASURING ENGINE OIL PRESSURE245
TESTING AND ADJUSTING FAN BELT TENSION246
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR246
ADJUSTING ENGINE SPEED SENSOR247
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)248
TESTING AND ADJUSTING GOVERNOR MOTOR LEVER STROKE249
TESTING AND ADJUSTING HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT250
TESTING AND ADJUSTING TVC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE)253
TESTING AND ADJUSTING LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE255
TESTING AND ADJUSTING CONTROL PUMP CIRCUIT OIL PRESSURE258
TESTING SOLENOID VALVE OUTPUT PRESSURE260
MEASURING PPC VALVE OUTPUT PRESSURE AND TESTING PPC SHUTTLE VALVE262
ADJUSTING WORK EQUIPMENT, SWING PPC VALVE264
TESTING TRAVEL DEVIATION265
TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT266
MEASURING OIL LEAKAGE268
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT270
TESTING CLEARANCE OF SWING CIRCLE BEARING271
TESTING AND ADJUSTING TRACK SHOE TENSION272
BLEEDING AIR273
TROUBLESHOOTING275
POINTS TO REMEMBER WHEN TROUBLESHOOTING276
SEQUENCE OF EVENTS IN TROUBLESHOOTING277
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE278
CHECKS BEFORE TROUBLSHOOTING286
CONNECTOR TYPES AND MOUNTING LOCATIONS288
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS292
EXPLANATION OF CONTROL MECHANISM FOR ELECTRICAL SYSTEM302
DISPLAY METHOD AND SPECIAL FUNCTIONS OF MONITOR PANEL303
METHOD OF USING JUDGEMENT TABLE311
METHOD OF USING TROUBLESHOOTING CHARTS313
DETAILS OF TROUBLESHOOTING AND TROUBLESHOOTING PROCEDURE315
SERVICE CODE TABLE320
TROUBLESHOOTING OF COMMUNICATION ABNORMALITY SYSTEM (N MODE)321
N-1 [E218] COMMUNICATION ABNORMALITY322
TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER (GOVERNOR CONTROL SYSTEM) (E MODE)325
POINTS TO REMEMBER WHEN CARRYING OUT TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER SYSTEM326
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE328
JUDGEMENT TABLE FOR GOVERNOR, PUMP GOVERNOR (GOVERNOR CONTROL SYSTEM) AND ENGINE RELATED PARTS332
ELECTRICAL CIRCUIT DIAGRAM FOR E MODE SYSTEM334
E-1 ABNORMALITY IN GOVERNOR, PUMP CONTROLLER POWER SOURCE (CONTROLLER LED IS OFF)336
E-2 [E308] ABNORMALITY IN FUEL CONTROL DIAL INPUT VALUE IS DISPLAYED337
E-3 [E317] ABNORMALITY (DISCONNECTION) IN MOTOR DRIVE SYSTEM IS DISPLAYED338
E-4 [E318] (SHORT CIRCUIT) IN MOTOR DRIVE SYSTEM IS DISPLAYED339
E-5 [E306] ABNORMALITY IN FEEDBACK POTENTIOMETER SYSTEM IS DISPLAYED340
E-6 [E315] ABNORMALITY (SHORT CIRCUIT) IN BATTERY RELAY OUTPUT SYSTEM IS DISPLAYED341
E-7 [E316] ABNORMALITY (STEP OUT) IN MOTOR IS DISPLAYED342
E-8 ENGINE DOES NOT START344
E-9 ENGINE SPEED IS IRREGULAR346
a) IDLING SPEED IS IRREGULAR346
b) THERE IS HUNTING348
E-10 LACK OF OUTPUT (ENGINE HIGH IDLING SPEED IS TOO LOW)350
E-11 ENGINE DOES NOT STOP352
E-12 DEFECTIVE OPERATION OF BATTERY RELAY SYSTEM (ENGINE DOES NOT STOP)354
TROUBLESHOOTING OF ENGINE (S MODE)357
TROUBLESHOOTING PROCEDURES AND TECHNIQUES358
TROUBLESHOOTING SYMPTOMS CHARTS358
ALTERNATOR NOT CHARGING OR INSUFFICIENT CHARGING359
ALTERNATOR OVERCHARGING360
COOLANT LOSS – EXTERNAL361
COOLANT TEMPERATURE ABOVE NORMAL – SUDDEN OVERHEAT (CONTINUED)362
COOLANT TEMPERATURE BELOW NORMAL363
CRANKCASE GASES (BLOWBY) – EXCESSIVE364
ENGINE ACCELERATION/RESPONSE POOR365
ENGINE CRANKS BUT WILL NOT START (NO SMOKE FROM EXHAUST)367
ENGINE DECELERATES SLOWLY370
ENGINE DIFFICULT TO START OR WILL NOT START – EXHAUST SMOKE PRESENT371
ENGINE NOISE EXCESSIVE*373
ENGINE NOISE EXCESSIVE – COMBUSTION KNOCKS376
ENGINE NOISE EXCESSIVE – CONNECTING ROD*377
ENGINE NOISE EXCESSIVE – MAIN BEARING*378
ENGINE NOISE EXCESSIVE – PISTON*379
ENGINE NOISE EXCESSIVE – TURBOCHARGER*381
ENGINE POWER OUTPUT LOW – BASICS382
ENGINE POWER OUTPUT – PERFORMANCE MEASUREMENT384
ENGINE RUNS ROUGH AT IDLE386
ENGINE RUNS ROUGH OR MISFIRES388
ENGINE SHUTS OFF UNEXPECTEDLY OR DIES DURING DECELERATION390
ENGINE SPEED SURGES AT LOW IDLE391
ENGINE SPEED SURGES (OTHER THAN LOW IDLE)392
ENGINE VIBRATION – EXCESSIVE393
ENGINE WILL NOT CRANK OR CRANKS SLOWLY (ELECTRIC STARTING MOTOR)394
ENGINE WILL NOT SHUT OFF396
ENGINE WILL START BUT WILL NOT KEEP RUNNING397
FUEL IN COOLANT399
FUEL IN LUBRICATING OIL400
INTAKE MANIFOLD AIR TEMPERATURE ABOVE SPECIFICATION401
LUBRICATING OIL CONSUMPTION EXCESSIVE402
LUBRICATING OIL CONTAMINATED404
LUBRICATING OIL PRESSURE – HIGH405
LUBRICATING OIL PRESSURE – LOW406
LUBRICATING OIL SLUDGE IN THE ENGINE CRANKCASE EXCESSIVE408
LUBRICATING OIL TEMPERATURE ABOVE SPECIFICATION410
LUBRICATING OIL IN THE COOLANT411
SMOKE, BLACK – EXCESSIVE412
SMOKE, BLACK – EXCESSIVE – PERFORMANCE MEASUREMENT413
SMOKE, WHITE – EXCESSIVE415
TURBOCHARGER BOOST PRESSURE LOW417
TURBOCHARGER LEAKS – ENGINE OIL OR FUEL418
ENGINE NOISE DIAGNOSTIC PROCEDURES – GENERAL INFORMATION419
MAIN BEARING NOISE419
CONNECTING ROD BEARING NOISE419
PISTON NOISE419
TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER (PUMP CONTROL SYSTEM) (C MODE)420
POINTS TO REMEMBER WHEN TROUBLESHOOTING PUMP CONTROLLER SYSTEM421
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE – CONTINUED423
JUDGEMENT TABLE FOR GOVERNOR, PUMP CONTROLLER (PUMP CONTROL SYSTEM) AND HYDRAULIC RELATED PARTS427
ELECTRICAL CIRCUIT DIAGRAM FOR C MODE429
C-1 ABNORMALITY IN CONTROLLER POWER SOURCE SYSTEM (CONTROLLER LED IS OFF)430
C-2 [E232] SHORT CIRCUIT IN FRONT PUMP TVC SOLENOID SYSTEM IS DISPLAYED431
C-3 [E233] DISCONNECTION IN FRONT PUMP TVC SOLENOID SYSTEM IS DISPLAYED433
C-4 [E236] SHORT CIRCUIT IN REAR PUMP TVC SOLENOID SYSTEM IS DISPLAYED435
C-5 [E237] DISCONNECTION IN REAR PUMP TVC SOLENOID SYSTEM IS DISPLAYED437
C-6 [E202] SHORT CIRCUIT IN LS SELECT SOLENOID SYSTEM IS DISPLAYED439
C-7 [E212] DISCONNECTION IN LS SELECT SOLENOID SYSTEM IS DISPLAYED440
C-8 [E203] SHORT CIRCUIT IN SWING BRAKE SOLENOID SYSTEM IS DISPLAYED441
C-9 [E213] DISCONNECTION IN SWING BRAKE SOLENOID SYSTEM IS DISPLAYED443
C-10 [E204] SHORT CIRCUIT IN PUMP MERGE/DIVIDER SOLENOID SYSTEM IS DISPLAYED445
C-11 [E214] DISCONNECTION IN PUMP MERGE/DIVIDER SOLENOID SYSTEM IS DISPLAYED446
C-12 [E206] SHORT CIRCUIT IN TRAVEL SPEED SOLENOID SYSTEM IS DISPLAYED447
C-13 [E216] DISCONNECTION IN TRAVEL SPEED SOLENOID SYSTEM IS DISPLAYED448
C-14 [E217] MODEL SELECTION INPUT ERROR IS DISPLAYED449
C-15 [E222] SHORT CIRCUIT IN LS-EPC SOLENOID SYSTEM IS DISPLAYED451
C-16 [E223] DISCONNECTION IN LS-EPC SOLENOID SYSTEM IS DISPLAYED452
C-17 [E224] ABNORMALITY IN FRONT PUMP PRESSURE SENSOR SYSTEM IS DISPLAYED453
C-18 [E225] ABNORMALITY IN REAR PUMP PRESSURE SENSOR SYSTEM IS DISPLAYED454
C-19 [E226] ABNORMALITY IN PRESSURE SENSOR POWER SOURCE SYSTEM IS DISPLAYED455
C-20 [E227] ABNORMALITY IN ENGINE SPEED SENSOR SYSTEM IS DISPLAYED456
C-21 ABNORMALITY IN MACHINE 2 – STAGE PRESSURE RELIEF SOLENOID SYSTEM (NO SERVICE CODE DISPLAYED)457
TROUBLESHOOTING OF GOVERNOR, PUMP CONTROLLER (INPUT SIGNAL SYSTEM) (F MODE)459
ELECTRICAL CIRCUIT DIAGRAM FOR F MODE460
F-1 BIT PATTERN 20-(1) SWING OIL PRESSURE SWITCH DOES NOT LIGHT UP461
F-2 BIT PATTERN 20-(2) TRAVEL OIL PRESSURE SWITCH DOES NOT LIGHT UP462
F-3 BIT PATTERN 20-(3) BOOM LOWER OIL PRESSURE SWITCH DOES NOT LIGHT UP463
F-4 BIT PATTERN 20-(4) BOOM RAISE OIL PRESSURE SWITCH DOES NOT LIGHT UP464
F-5 BIT PATTERN 20-(5) ARM IN OIL PRESSURE SWITCH DOES NOT LIGHT UP465
F-6 BIT PATTERN 20-(6) ARM OUT OIL PRESSURE SWITCH DOES NOT LIGHT UP466
F-7 BIT PATTERN 21-(1) BUCKET CURL OIL PRESSURE SWITCH DOES NOT LIGHT UP467
F-8 BIT PATTERN 21-(2) BUCKET DUMP OIL PRESSURE SWITCH DOES NOT LIGHT UP468
F-9 BIT PATTERN 21-(3) SWING LOCK SWITCH DOES NOT LIGHT UP469
F-11 BIT PATTERN 22-(6) LH KNOB SWITCH DOES NOT LIGHT UP470
TROUBLESHOOTING OF HYDRAULIC, MECHANICAL SYSTEM (H MODE)472
PUMP MERGE/DIVIDER LOGIC, LS SELECT LOGIC, SOLENOID ACTUATION TABLE473
TABLE OF FAILURE MODES AND CAUSES475
H-2 THERE IS EXCESSIVE DROP IN ENGINE SPEED, OR ENGINE STALLS479
H-3 NO WORK EQUIPMENT, TRAVEL, SWING MOVE480
H-4 ABNORMAL NOISE GENERATED (AROUND PUMP)480
H-5 AUTO-DECELERATION DOES NOT WORK (WHEN PPC SHUTTLE VALVE IS CAUSE)481
H-6 FINE CONTROL ABILITY IS POOR OR RESPONSE IS POOR481
H-7 BOOM IS SLOW OR LACKS POWER483
H-8 ARM IS SLOW OR LACKS POWER485
H-9 BUCKET IS SLOW OR LACKS POWER487
H-10 WORK EQUIPMENT (BOOM, ARM, BUCKET) DOES NOT MOVE (BUT TRAVEL AND SWING ARE NORMAL)488
H-11 EXCESSIVE HYDRAULIC DRIFT (BOOM, ARM, BUCKET)488
H-12 EXCESSIVE TIME LAG (ENGINE AT LOW IDLING)489
H-13 OTHER EQUIPMENT MOVES WHEN SINGLE CIRCUIT IS RELIEVED489
H-14 IN L/O, F/O MODES, WORK EQUIPMENT SPEED IS FASTER THAN SPECIFIED SPEED490
H-15 DEFECTIVE ACTUATION OF MACHINE 2 STAGE PRESSURE RELIEF FUNCTION490
H-16 IN COMPOUND OPERATIONS, WORK EQUIPMENT WITH LARGER LOAD IS SLOW490
H-17 IN SWING + BOOM RAISE, BOOM RAISE IS SLOW491
H-18 IN SWING + ARM, ARM IS SLOW491
H-19 IN SWING + TRAVEL, TRAVEL SPEED DROPS EXCESSIVELY491
H-20 TRAVEL DEVIATION492
H-21 TRAVEL SPEED IS SLOW493
H-22 STEERING DOES NOT TURN EASILY OR LACKS POWER495
H-23 TRAVEL SPEED DOES NOT SWITCH OR IS FASTER THAN SPECIFIED SPEED497
H-24 TRAVEL DOES NOT MOVE (ONE SIDE ONLY)497
H-25 DOES NOT SWING498
H-26 SWING ACCELERATION IS POOR OR SWING SPEED IS SLOW499
H-27 EXCESSIVE OVERRUN WHEN STOPPING SWING501
H-28 EXCESSIVE SHOCK WHEN STOPPING SWING (ONE DIRECTION ONLY)502
H-29 EXCESSIVE ABNORMAL NOISE WHEN STOPPING SWING502
H-30 EXCESSIVE HYDRAULIC DRIFT OF SWING503
H-31 SWING SPEED IS FASTER THAN SPECIFIED SWING SPEED504
TROUBLESHOOTING OF MACHINE MONITOR SYSTEM (M MODE)507
ACTION TAKEN BY MONITOR PANEL WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE509
ELECTRICAL CIRCUIT DIAGRAM FOR M MODE SYSTEM511
M-1 [E101] ABNORMALITY IN ERROR DATA IS DISPLAYED, [E102] ERROR IN CLOCK DATA IS DISPLAYED512
M-2 [E103] SHORT CIRCUIT IN BUZZER OUTPUT OR CONTACT OF 24V WIRING HARNESS WITH BUZZER DRIVE HARNESS IS DISPLAYED513
M-3 [E104] AIR CLOGGING DETECTED IS DISPLAYED514
M-4 [E106] DROP IN ENGINE OIL PRESSURE DETECTED IS DISPLAYED514
M-5 [E108] ENGINE WATER TEMPERATURE 105 C DETECTED IS DISPLAYED515
M-6 WHEN STARTING SWITCH IS TURNED ON, NONE OF THE LAMPS ON THE MONITOR PANEL LIGHT UP FOR 3 SECONDS516
M-7 WHEN STARTING SWITCH IS TURNED ON, MONITOR PANEL LAMPS ALL STAY LIT UP AND DO NOT GO OUT518
M-8 WHEN STARTING SWITCH IS TURNED ON, ITEMS LIT UP ON MONITOR PANEL ARE DIFFERENT FROM ACTUAL MACHINE (MODEL)518
M-9 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), BASIC CHECK ITEMS FLASHES519
M-10 PREHEATING IS NOT BEING USED BUT (PREHEATING MOTOR) LIGHTS UP522
M-11 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED, BASIC CHECK ITEMS FLASH523
M-12 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), CAUTION ITEMS, EMERGENCY ITEMS FLASH (BATTERY, ENGINE OIL PRESSURE L525
M-13 WHEN STARTING SWITCH IS TURNED ON AND ENGINE IS STARTED, CAUTION ITEMS, EMERGENCY ITEMS FLASH (THEN THERE IS NO ABNORMAL527
M-14 WHEN STARTING SWITCH IS TURNED ON (ENGINE STOPPED), BUZZER DOES NOT SOUND FOR 1 SECOND CAUTION ITEM FLASHES BUT BUZZER D530
M-15 NO ABNORMALITY IS DISPLAYED ON MONITOR BUT BUZZER SOUNDS530
M-16 NIGHT LIGHTING ON MONITOR PANEL DOES NOT LIGHT UP (LIQUID CRYSTAL DISPLAY IS NORMAL)531
M-17 COOLANT TEMPERATURE GAUGE DOES NOT RISE532
M-18 COOLANT TEMPERATURE GAUGE DOES NOT GIVE ANY DISPLAY (NONE OF GAUGE LAMPS LIGHT UP DURING OPERATION)532
M-19 FUEL LEVEL GAUGE ALWAYS DISPLAYS FULL533
M-20 FUEL LEVEL GAUGE DOES NOT GIVE DISPLAY533
M-21 SWING LOCK SWITCH IS TURNED ON (LOCK) BUT (SWING LOCK MONITOR) DOES NOT LIGHT UP534
M-22 SWING PROLIX SWITCH IS TURNED ON (PROLIX), BUT (SWING LOCK MONITOR) DOES NOT FLASH534
M-23 SERVICE METER DOES NOT ADVANCE WHILE ENGINE IS RUNNING535
M-24 WHEN STARTING SWITCH IS AT OFF AND TIME SWITCH IS PRESSED, TIME AND SERVICE METER ARE NOT DISPLAYED535
M-25 DEFECTIVE FUEL LEVEL SENSOR SYSTEM536
M-26 DEFECTIVE COOLANT TEMPERATURE SENSOR SYSTEM537
M-27 DEFECTIVE ENGINE OIL LEVEL SENSOR SYSTEM538
M-28 DEFECTIVE COOLANT LEVEL SENSOR SYSTEM539
M-29 DEFECTIVE HYDRAULIC OIL LEVEL SENSOR SYSTEM540
M-30 WIPER DOES NOT WORK OR SWITCH IS NOT BEING USED BUT WIPER IS ACTUATED541
M-31 WORKING LIGHT, PANEL LIGHTING DO NOT LIGHT UP, OR SWITCH IS NOT BEING USED BUT LIGHTS UP545
30 DISASSEMBLY AND ASSEMBLY547
METHOD OF USING MANUAL549
PRECAUTIONS WHEN CARRYING OUT OPERATION551
SPECIAL TOOL LIST553
SKETCHES OF SPECIAL TOOLS560
STARTING MOTOR ASSEMBLY568
REMOVAL AND INSTALLATION568
ALTERNATOR ASSEMBLY569
REMOVAL AND INSTALLATION569
NOZZLE HOLDER ASSEMBLY570
REMOVAL AND INSTALLATION570
THERMOSTAT ASSEMBLY578
REMOVAL AND INSTALLATION578
CYLINDER HEAD ASSEMBLY579
REMOVAL579
INSTALLATION581
HYDRAULIC COOLER ASSEMBLY587
REMOVAL587
INSTALLATION588
RADIATOR, HYDRAULIC COOLER ASSEMBLY589
REMOVAL589
INSTALLATION591
ENGINE, MAIN PUMP ASSEMBLY592
REMOVAL592
INSTALLATION595
DAMPER ASSEMBLY596
REMOVAL AND INSTALLATION596
FUEL TANK ASSEMBLY597
REMOVAL AND INSTALLATION597
CENTER SWIVEL JOINT ASSEMBLY598
REMOVAL AND INSTALLATION598
DISASSEMBLY AND ASSEMBLY599
FINAL DRIVE ASSEMBLY600
REMOVAL AND INSTALLATION600
DISASSEMBLY601
ASSEMBLY605
TRAVEL MOTOR ASSEMBLY610
DISASSEMBLY610
ASSEMBLY615
SPROCKET627
REMOVAL AND INSTALLATION627
SWING MOTOR ASSEMBLY628
DISASSEMBLY628
ASSEMBLY631
REMOVAL AND INSTALLATION638
SWING MACHINERY ASSEMBLY639
REMOVAL AND INSTALLATION639
DISASSEMBLY640
ASSEMBLY644
REVOLVING FRAME ASSEMBLY649
REMOVAL649
INSTALLATION650
SWING CIRCLE ASSEMBLY651
REMOVAL AND INSTALLATION651
IDLER, RECOIL SPRING ASSEMBLY652
REMOVAL AND INSTALLATION652
IDLER ASSEMBLY653
DISASSEMBLY653
ASSEMBLY654
RECOIL SPRING ASSEMBLY656
DISASSEMBLY656
ASSEMBLY657
TRACK ROLLER ASSEMBLY658
REMOVAL AND INSTALLATION658
DISASSEMBLY659
ASSEMBLY660
CARRIER ROLLER ASSEMBLY662
REMOVAL AND INSTALLATION662
DISASSEMBLY663
ASSEMBLY665
TRACK SHOE ASSEMBLY667
REMOVAL AND INSTALLATION667
HYDRAULIC TANK ASSEMBLY668
REMOVAL668
INSTALLATION669
CONTROL PUMP ASSEMBLY670
REMOVAL AND INSTALLATION670
MAIN PUMP ASSEMBLY671
REMOVAL671
INSTALLATION672
DISASSEMBLY680
ASSEMBLY686
MAIN PUMP INPUT SHAFT OIL SEAL695
REMOVAL AND INSTALLATION695
CONTROL VALVE ASSEMBLY696
REMOVAL696
INSTALLATION698
DISASSEMBLY699
ASSEMBLY703
PUMP MERGE/DEVIDER VALVE ASSEMBLY708
DISASSEMBLY AND ASSEMBLY708
PRESSURE COMPENSATION VALVE ASSEMBLY709
DISASSEMBLY AND ASSEMBLY709
SERVO VALVE ASSEMBLY FOR FRONT PUMP 710
REMOVAL AND INSTALLATION710
SERVO VALVE ASSEMBLY FOR REAR PUMP711
REMOVAL AND INSTALLATION711
LS-EPC SOLENOID VALVE ASSEMBLY712
REMOVAL AND INSTALLATION712
SOLENOID VALVE ASSEMBLY713
REMOVAL AND INSTALLATION713
WORK EQUIPMENT PPC VALVE ASSEMBLY714
REMOVAL AND INSTALLATION714
DISASSEMBLY715
ASSEMBLY716
TRAVEL PPC VALVE ASSEMBLY717
REMOVAL AND INSTALLATION717
DISASSEMBLY718
ASSEMBLY719
PPC SHUTTLE VALVE ASSEMBLY720
REMOVAL720
INSTALLATION721
DISASSEMBLY722
ASSEMBLY723
BOOM CYLINDER ASSEMBLY724
REMOVAL724
INSTALLATION725
ARM CYLINDER ASSEMBLY726
REMOVAL726
INSTALLATION727
BUCKET CYLINDER ASSEMBLY728
REMOVAL728
INSTALLATION729
HYDRAULIC CYLINDER ASSEMBLY730
DISASSEMBLY730
ASSEMBLY732
WORK EQUIPMENT ASSEMBLY734
REMOVAL734
INSTALLATION735
BUCKET ASSEMBLY736
REMOVAL736
INSTALLATION737
ARM ASSEMBLY738
REMOVAL738
INSTALLATION739
BUCKET, ARM ASSEMBLY740
REMOVAL740
INSTALLATION741
BOOM ASSEMBLY742
REMOVAL742
INSTALLATION743
OPERATOR’S CAB ASSEMBLY744
REMOVAL744
INSTALLATION745
COUNTERWEIGHT ASSEMBLY746
REMOVAL AND INSTALLATION746
GOVERNOR, PUMP CONTROLLER ASSEMBLY747
REMOVAL AND INSTALLATION747
MONITOR PANEL ASSEMBLY748
REMOVAL AND INSTALLATION748
CONTROL STAND CASE749
REMOVAL749
INSTALLATION750
40 MAINTENANCE STANDARD752
SWING MACHINERY753
SWING CIRCLE755
FINAL DRIVE756
TRACK FRAME AND RECOIL SPRING758
IDLER759
CARRIER ROLLER761
TRACK ROLLER762
TRACK763
HYDRAULIC PUMP766
CONTROL PUMP AND RELIEF VALVE768
CONTROL VALVE769
SUCTION SAFETY VALVE775
SWING MOTOR776
TRAVEL MOTOR777
WORK EQUIPMENT, SWING PPC VALVE778
TRAVEL PPC VALVE779
SERVICE PPC VALVE780
PPC SHUTTLE VALVE, TRAVEL JUNCTION781
EPC SOLENOID VALVE782
CENTER SWIVEL JOINT783
HYDRAULIC CYLINDER784
WORK EQUIPMENT785
DIMENSIONS OF WORK EQUIPMENT787