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Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up – PDF DOWNLOAD
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Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up
MACHINE MODEL SERIAL No.
PC308USLC-3 20001 and up
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Description
Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up
FILE DETAILS:
Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up
Brands: Komatsu
Equipment Type: Hydraulic Excavator
Manuals Type: Shop Manual
Machine Model: PC308USLC-3
Serial Number: 20001 and up
Book Code: SEBM033101
Language: English
Pages: 594
File Format: Portable Document Format (PDF)
DESCRIPTION:
Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up
1 GENERAL:
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to full effect at every opportunity. This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For ease of understanding, the manual is divided into the following sections. These sections are further divided into each main group of components.
GENERAL:
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and lubricant specification charts.
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD:
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. In addition, this section gives the judgement standards when inspecting disassembled parts.
STANDARD VALUE TABLE:
This section explains the standard values for new machine and judgement criteria for testing, adjusting and troubleshooting. This standard value table is used to check the standard values in testing and adjusting and to judge parts in 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:
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.
OTHERS:
This section has the foldout drawings for the machine.
TABLE OF CONTENTS:
Komatsu PC308USLC-3 Hydraulic Excavator Shop Manual 20001 and up
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
METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER........................................................................ 12
COATING MATERIALS................................................................................................................. 14
STANDARD TIGHTENING TORQUE........................................................................................................ 16
ELECTRIC WIRE CODE................................................................................................................ 19
CONVERSION TABLE.................................................................................................................. 20
UNITS............................................................................................................................. 26
01 GENERAL............................................................................................................................ 27
SPECIFICATION DIMENSION DRAWINGS.................................................................................................. 28
SPECIFICATIONS.................................................................................................................... 30
WEIGHT TABLE...................................................................................................................... 32
FUEL, COOLANT, AND LUBRICANTS..................................................................................................... 34
10 STRUCTURE, FUNCTION, AND MAINTENANCE STANDARD...................................................................................... 35
ENGINE RELATED PARTS.............................................................................................................. 36
RADIATOR * OIL COOLER * AFTERCOOLER............................................................................................... 37
POWER TRAIN....................................................................................................................... 38
FINAL DRIVE....................................................................................................................... 40
SWING MACHINERY................................................................................................................... 42
SWING CIRCLE...................................................................................................................... 44
TRACK FRAME * RECOIL SPRING....................................................................................................... 46
IDLER............................................................................................................................. 48
CARRIER ROLLER.................................................................................................................... 50
TRACK ROLLER...................................................................................................................... 51
TRACK SHOE........................................................................................................................ 52
HYDRAULIC TANK.................................................................................................................... 56
HYDRAULIC PUMP.................................................................................................................... 57
CONTROL VALVE..................................................................................................................... 78
SELF PRESSURE REDUCING VALVE...................................................................................................... 94
CLSS.............................................................................................................................. 99
SWING MOTOR.......................................................................................................................100
REVERSE PREVENTION VALVE..........................................................................................................105
CENTER SWIVEL JOINT...............................................................................................................107
TRAVEL MOTOR......................................................................................................................109
TRAVEL JUNCTION VALVE.............................................................................................................119
TRAVEL PPC SHUTTLE VALVE..........................................................................................................121
VALVE CONTROL.....................................................................................................................123
WORK EQUIPMENT * SWING PPC VALVE..................................................................................................124
TRAVEL PPC VALVE..................................................................................................................128
SERVICE PPC VALVE.................................................................................................................137
SOLENOID VALVE....................................................................................................................140
PPC ACCUMULATOR...................................................................................................................142
RETURN OIL FILTER.................................................................................................................143
BOOM HYDRAULIC DRIFT PREVENTION VALVE.............................................................................................144
LIFT CHECK VALVE..................................................................................................................147
ATTACHMENT CIRCUIT SELECTOR VALVE.................................................................................................148
HYDRAULIC CYLINDER................................................................................................................150
WORK EQUIPMENT....................................................................................................................152
AIR CONDITIONER...................................................................................................................158
ENGINE CONTROL....................................................................................................................159
ELECTRONIC CONTROL SYSTEM.........................................................................................................167
MONITORING SYSTEM.................................................................................................................192
SENSOR............................................................................................................................199
20 TESTING AND ADJUSTING..............................................................................................................203
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS.....................................................................................204
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS....................................................................................205
TESTING AND ADJUSTING.............................................................................................................213
TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING..............................................................................214
INSPECTION AND ADJUSTMENT OF ENGINE RPM.......................................................................................216
MEASUREMENT OF EXHAUST COLOR..................................................................................................218
ADJUSTMENT OF VALVE CLEARANCE.................................................................................................219
MEASUREMENT OF COMPRESSION PRESSURE...........................................................................................221
MEASUREMENT OF BLOW-BY PRESSURE...............................................................................................222
INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING............................................................................223
MEASUREMENT OF ENGINE OIL PRESSURE............................................................................................225
ADJUSTMENT OF ENGINE SPEED SENSOR.............................................................................................226
INSPECTION AND ADJUSTMENT OF AIR COMPRESSOR BELT TENSION......................................................................226
EMERGENT ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM.........................................................................227
GOVERNOR MOTOR LEVER STROKE...................................................................................................228
HYDRAULIC PRESSURE IN WORK EQUIPMENT, SWING, TRAVEL CIRCUIT...................................................................229
PC VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE)........................................................................232
LS VALVE OUTPUT PRESSURE (SERVO PISTON INPUT PRESSURE) AND LS DIFFERENTIAL PRESSURE...........................................234
CONTROL CIRCUIT OIL PRESSURE..................................................................................................237
MEASURING SOLENOID VALVE OUTPUT PRESSURE......................................................................................238
MEASURING PPC VALVE OUTPUT PRESSURE...........................................................................................241
ADJUSTING WORK EQUIPMENT * SWING PPC VALVE....................................................................................242
TESTING TRAVEL DEVIATION......................................................................................................243
TESTING LOCATIONS CAUSING HYDRAULIC DRIFT OF WORK EQUIPMENT...................................................................244
MEASURING SWING, TRAVEL MOTOR OIL LEAKAGE.....................................................................................245
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT.............................................................................246
TESTING CLEARANCE OF SWING CIRCLE BEARING.....................................................................................247
TESTING WEAR OF SPROCKET......................................................................................................248
TESTING AND ADJUSTING TRACK SHOE TENSION......................................................................................249
BLEEDING AIR..................................................................................................................250
INSPECTION PROCEDURES FOR DIODE...............................................................................................252
TROUBLESHOOTING...................................................................................................................253
POINTS TO REMEMBER WHEN TROUBLESHOOTING.......................................................................................254
SEQUENCE OF EVENTS WHEN TROUBLESHOOTING.......................................................................................255
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE..............................................................................256
CHECKS BEFORE TROUBLESHOOTING.................................................................................................264
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING..................................................................................265
CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM.............................................................270
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS....................................................................................282
EXPLANATION OF CONTROL MECHANISM FOR ELECTRICAL SYSTEM........................................................................304
DISPLAY METHOD AND SPECIAL FUNCTIONS OF MONITOR PANEL.........................................................................305
METHOD OF USING JUDGEMENT TABLE...............................................................................................320
METHOD OF USING TROUBLESHOOTING CHARTS........................................................................................322
DETAILS OF TROUBLESHOOTING AND TROUBLESHOOTING PROCEDURE......................................................................324
TROUBLESHOOTING OF COMMUNICATIONS ABNORMALITY (N MODE)........................................................................329
N-1 [E218] COMMUNICATIONS ABNORMALITY.....................................................................................330
TROUBLESHOOTING WHEN SERVICE CODE "ELECTRICAL SYSTEM" AND FAILURE CODE "MECHANICAL SYSTEM" ARE INDICATED......................331
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE............................................................................334
SERVICE CODE IN ELECTRICAL SYSTEM [E101] (ABNORMAL DATA IN ERROR HISTORY).................................................336
SERVICE CODE IN ELECTRICAL SYSTEM [E112] (SHORT-CIRCUITING IN NORMAL ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE).....338
SERVICE CODE IN ELECTRICAL SYSTEM [E113] (SHORT CIRCUITING IN REVERSE ROTATION SYSTEM OF WINDSHIELD WIPER MOTOR DRIVE)....340
SERVICE CODE IN ELECTRICAL SYSTEM [E114] (SHORT CIRCUITING IN WINDOW WASHER DRIVE SYSTEM).................................342
SERVICE CODE IN ELECTRICAL SYSTEM [E115] (ABNORMAL WINDSHIELD WIPER MOTION)...............................................344
SERVICE CODE IN ELECTRICAL SYSTEM [E116] (ABNORMALITY IN RETRACTING WINDSHIELD WIPER).....................................346
SERVICE CODE IN ELECTRICAL SYSTEM [E201] (SHORT CIRCUITING IN TRAVEL INTERLOCKING SOLENOID)...............................348
SERVICE CODE IN ELECTRICAL SYSTEM [E203] (SHORT CIRCUITING IN SWING HOLDING BRAKE SOLENOID)...............................350
SERVICE CODE IN ELECTRICAL SYSTEM [E204] (SHORT CIRCUITING IN MERGE/DIVIDE SOLENOID)......................................352
SERVICE CODE IN ELECTRICAL SYSTEM [E205] (SHORT CIRCUITING IN 2 STAGE RELIEF SOLENOID)....................................354
SERVICE CODE IN ELECTRICAL SYSTEM [E206] (SHORT CIRCUITING IN TRAVEL SPEED SHIFTING SOLENOID).............................356
SERVICE CODE IN ELECTRICAL SYSTEM [E211] (DISCONNECTION IN TRAVEL INTERLOCKING SOLENOID)..................................358
SERVICE CODE IN ELECTRICAL SYSTEM [E213] (DISCONNECTION IN SWING HOLDING BRAKE SOLENOID)..................................360
SERVICE CODE IN ELECTRICAL SYSTEM [E214] (DISCONNECTION OF MERGE/DIVIDE SOLENOID).........................................362
SERVICE CODE IN ELECTRICAL SYSTEM [E215] (DISCONNECTION IN 2 STAGE RELEIF SOLENOID).......................................364
SERVICE CODE IN ELECTRICAL SYSTEM [E216] (DISCONNECTION IN TRAVEL SPEED SHIFTING SOLENOID)................................366
SERVICE CODE IN ELECTRICAL SYSTEM [E217] (ABNORMALITY IN INPUTTING MODEL CODE)............................................368
SERVICE CODE IN ELECTRICAL SYSTEM [E218] (DISCONNECTION OF S NET SIGNAL)..................................................370
SERVICE CODE IN ELECTRICAL SYSTEM [E222] (SHORT CIRCUITING IN LS-EPC SOLENOID)............................................372
SERVICE CODE IN ELECTRICAL SYSTEM [E223] (DISCONNECTION IN LS-EPC SOLENOID SYSTEM)........................................373
SERVICE CODE IN ELECTRICAL SYSTEM [E224] (ABNORMALITY IN F PUMP PRESSURE SENSOR)..........................................374
SERVICE CODE IN ELECTRICAL SYSTEM [E225] (ABNORMALITY IN R PUMP PRESSURE SENSOR)..........................................376
SERVICE CODE IN ELECTRICAL SYSTEM [E226] (ABNORMALITY IN PRESSURE SENSOR POWER SOURCE)....................................378
SERVICE CODE IN ELECTRICAL SYSTEM [E227] (ABNORMALITY IN ENGINE ROTATION SENSOR)..........................................380
SERVICE CODE IN ELECTRICAL SYSTEM [E228] (SHORT CIRCUITING IN ATTACHMENT RETURN SWITCHING RELAY)..........................381
SERVICE CODE IN ELECTRICAL SYSTEM [E232] (SHORT CIRCUITING IN PC-EPC SOLENOID)............................................382
SERVICE CODE IN ELECTRICAL SYSTEM [E233] (DISCONNECTION IN PC-EPC SOLENOID SYSTEM)........................................384
SERVICE CODE IN ELECTRICAL SYSTEM [E238] (DISCONNECTION IN ATTACHMENT RETURN SWITCHING RELAY).............................386
SERVICE CODE IN ELECTRICAL SYSTEM [E256] (INCORRECT NONVOLATILE MEMORY DATA)..............................................388
SERVICE CODE IN ELECTRICAL SYSTEM [E306] (ABNORMALITY IN GOVERNOR POTENTIOMETER)..........................................390
SERVICE CODE IN ELECTRICAL SYSTEM [E308] (ABNORMALITY IN FUEL DIAL).......................................................392
SERVICE CODE IN ELECTRICAL SYSTEM [E315] (SHORT CIRCUITING IN BATTERY RELAY)..............................................394
SERVICE CODE IN ELECTRICAL SYSTEM [E316] (STEP OUT IN GOVERNOR MOTOR).....................................................396
SERVICE CODE IN ELECTRICAL SYSTEM [E317] (DISCONNECTION IN GOVERNOR MOTOR PHASE A AND B)..................................398
SERVICE CODE IN ELECTRICAL SYSTEM [E318] (SHORT CIRCUITING IN GOVERNOR MOTOR PHASE A AND PHASE B).........................400
SERVICE CODE IN ELECTRICAL SYSTEM [E501] ("MODEL SELECTION" FUNCTION NOT PROVIDED YET)....................................402
SERVICE CODE IN ELECTRICAL SYSTEM [E502] (MODEL SELECTING SIGNAL FAULT)...................................................403
FAILURE CODE IN MECHANICAL SYSTEM [E104] (AIR CLEANER CLOGGING)...........................................................404
FAILURE CODE IN MECHANICAL SYSTEM [E108] (ENGINE COOLING WATER OVERHEATING)...............................................405
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE).................................................................................407
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE............................................................................408
E-1 ENGINE DOES NOT START (ENGINE DOES NOT ROTATE)........................................................................409
E-2 ENGINE STOPS WHILE IN OPERATION.......................................................................................412
E-3 ENGINE SPEED IS IRREGULAR, OR THERE IS HUNTING........................................................................414
E-4 ENGINE DOES NOT STOP..................................................................................................416
E-5 AUTO-DECELERATOR DOES NOT WORK........................................................................................418
E-6 AUTO ENGINE WARM UP DEVICE DOES NOT WORK..............................................................................419
E-7 PREHEATER DOES NOT WORK...............................................................................................420
E-8 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT MOVE......................................................................422
E-9 ONE TOUCH POWER MAX SWITCH DOES NOT WORK..............................................................................424
E-10 NO DISPLAY IN MONITOR PANEL AT ALL...................................................................................425
E-11 PART OF DISPLAY ON MONITOR PANEL IS MISSING..........................................................................426
E-12 MONITOR PANEL DISPLAYS CONTENTS IRRELEVANT TO THE MODEL..............................................................426
E-13 FUEL LEVEL MONITOR RED LAMP LIGHTS UP WHILE ENGINE IS RUNNING........................................................427
E-14 ENGINE COOLING TEMPERATURE GAUGE DOES NOT INDICATE CORRECTLY.........................................................428
E-15 HYDRAULIC OIL TEMPERATURE GAUGE DOES NOT DISPLAY CORRECTLY...........................................................429
E-16 FUEL GAUGE DOES NOT DISPLAY CORRECTLY................................................................................430
E-17 SWING LOCK MONITOR DOES NOT DISPLAY CORRECTLY........................................................................432
E-18 WHEN THE MONITOR SWITCH IS OPERATED, NO DISPLAY APPEARS..............................................................434
E-19 WINDSHIELD WIPER DOES NOT WORK.......................................................................................436
E-20 ALARMING BUZZER CANNOT BE CANCELLED..................................................................................438
E-21 "BOOM RAISE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION..........................................................439
E-22 "BOOM LOWER" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION..........................................................440
E-23 "ARM DIGGING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.........................................................441
E-24 "ARM DUMPING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.........................................................442
E-25 "BUCKET DIGGING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION......................................................443
E-26 "BUCKET DUMPING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION......................................................444
E-27 "SWING" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION...............................................................446
E-28 "TRAVEL" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION..............................................................448
E-29 "TRAVEL DIFFERENTIAL PRESSURE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION........................................450
E-30 "SERVICE" IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION.............................................................452
E-31 AIR CONDITIONER DOES NOT WORK........................................................................................454
E-32 TRAVEL ALARM DOES NOT SOUND..........................................................................................455
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)...................................................................457
SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEMS.........................................................................458
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE............................................................................460
H-1 ALL WORK EQUIPMENT LACK POWER, OR TRAVEL AND SWING SPEEDS ARE SLOW....................................................461
H-2 ENGINE SPEED SHARPLY DROPS OR ENGINE STALLS...........................................................................462
H-3 NO WORK EQUIPMENT, TRAVEL OR SWING MOVE...............................................................................463
H-4 ABNORMAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP....................................................................463
H-5 AUTO-DECELERATOR DOES NOT WORK........................................................................................464
H-6 FINE CONTROL MODE DOES NOT FUNCTION...................................................................................464
H-7 BOOM MOVES SLOWLY OR LACKS POWER......................................................................................465
H-8 ARM MOVES SLOWLY OR LACKS POWER.......................................................................................466
H-9 BUCKET MOVES SLOWLY OR LACKS POWER....................................................................................467
H-10 WORK EQUIPMENT DOES NOT MOVE IN ITS SINGLE OPERATION.................................................................467
H-11 WORK EQUIPMENT HAS A BIT TOO FAST HYDRAULIC DRIFT....................................................................468
H-12 WORK EQUIPMENT HAS A BIG TIME LAG....................................................................................469
H-13 OTHER WORK EQUIPMENT MOVES WHEN RELIEVING SINGLE CIRCUIT.............................................................469
H-14 ONE TOUCH POWER MAX SWITCH DOES NOT OPERATE..........................................................................469
H-15 IN COMOUND OPERATION, WORK EQUIPMENT WITH LARGER LOAD MOVES SLOWLY...................................................470
H-16 IN SWING + BOOM RAISE OPERATION, BOOM MOVES SLOWLY...................................................................470
H-17 IN SWING + TRAVEL, TRAEL SPEED DROPS SHARPLY.........................................................................470
H-18 MACHINE SWERVES IN TRAVEL............................................................................................471
H-19 MACHINE TRAVELS SLOWLY...............................................................................................472
H-20 MACHINE CANNOT BE EASILY STEERED OR LACKS POWER......................................................................473
H-21 TRAVEL SPEED DOES NOT SHIFT, OR IT IS TOO SLOW OR FAST...............................................................474
H-22 TRACK SHOE DOES NOT TURN (ON ONE SIDE ONLY)..........................................................................475
H-23 MACHINE DOES NOT SWING...............................................................................................476
H-24 SWING ACCELERATION IS POOR, OR SWING SPEED IS SLOW...................................................................477
H-25 EXCESSIVE OVERRUN WHEN STOPPING SWING................................................................................478
H-26 THERE IS A BIG SHOCK WHEN STOPPING SWING.............................................................................479
H-27 THERE IS A BIG ABNORMAL NOISE CAUSED WHEN STOPPING SWING.............................................................479
TROUBLESHOOTING OF ENGINE (S MODE)............................................................................................480
METHOD OF USING TROUBLESHOOTING CHARTS....................................................................................481
S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME).............................................................485
S-2 ENGINE DOES NOT START.................................................................................................487
(1) ENGINE DOES NOT TURN..............................................................................................487
(2) ENGINE TURNS BUT NO EXHAUST SMOKE COMES OUT (FUEL IS NOT BEING INJECTED)..........................................488
(3) EXHAUST SMOKE COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)........................................489
S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW UP IS POOR)..................................................................490
S-4 ENGINE STOPS DURING OPERATIONS........................................................................................491
S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING).............................................................................492
S-6 ENGINE LACKS OUTPUT (OR LACKS POWER)..................................................................................493
S-7 EXHAUST SMOKE IS BLACK (INCOMPLETE COMBUSTION)........................................................................494
S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST SMOKE IS BLUE)...............................................................495
S-9 OIL BECOMES CONTAMINATED QUICKLY......................................................................................496
S-10 FUEL CONSUMPTION IS EXCESSIVE........................................................................................497
S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN..............................................498
S-12 OIL PRESSURE MONITOR LIGHTS UP (DROP IN OIL PRESSURE)................................................................499
S-13 OIL LEVEL RISES (WATER, FUEL IN OIL).................................................................................500
S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING).....................................................................501
S-15 ABNORMAL NOISE IS MADE...............................................................................................502
S-16 VIBRATION IS EXCESSIVE...............................................................................................503
30 DISASSEMBLY AND ASSEMBLY...........................................................................................................504
METHOD OF USING MANUAL............................................................................................................506
PRECAUTIONS WHEN CARRYING OUT OPERATION...........................................................................................508
SPECIAL TOOL LIST.................................................................................................................511
REMOVAL OF ENGINE ASSEMBLY........................................................................................................514
INSTALLATION OF ENGINE ASSEMBLY...................................................................................................516
REMOVAL OF ENGINE FRONT SEAL......................................................................................................517
INSTALLATION OF ENGINE FRONT SEAL.................................................................................................518
REMOVAL OF ENGINE REAR SEAL.......................................................................................................519
INSTALLATION OF ENGINE REAR SEAL..................................................................................................520
REMOVAL OF RADIATOR ASSEMBLY......................................................................................................521
INSTALLATION OF RADIATOR ASSEMBLY.................................................................................................522
REMOVAL OF HYDRAULIC OIL COOLER ASSEMBLY..........................................................................................523
INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY.....................................................................................524
REMOVAL OF AFTERCOOLER ASSEMBLY...................................................................................................525
INSTALLATION OF AFTERCOOLER ASSEMBLY..............................................................................................525
REMOVAL OF FUEL TANK ASSEMBLY.....................................................................................................526
INSTALLATION OF FUEL TANK ASSEMBLY................................................................................................526
REMOVAL OF CENTER SWIVEL JOINT ASSEMBLY...........................................................................................527
DISASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY.......................................................................................528
ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY..........................................................................................528
REMOVAL OF FINAL DRIVE ASSEMBLY...................................................................................................529
INSTALLATION OF FINAL DRIVE ASSEMBLY..............................................................................................529
DISASSEMBLY OF FINAL DRIVE ASSEMBLY...............................................................................................530
ASSEMBLY OF FINAL DRIVE ASSEMBLY..................................................................................................533
REMOVAL OF REVOLVING FRAME ASSEMBLY...............................................................................................539
INSTALLATION OF REVOLVING FRAME ASSEMBLY..........................................................................................539
REMOVAL OF SWING CIRCLE ASSEMBLY..................................................................................................540
INSTALLATION OF SWING CIRCLE ASSEMBLY.............................................................................................540
DISASSEMBLY OF RECOIL SPRING ASSEMBLY.............................................................................................541
ASSEMBLY OF RECOIL SPRING ASSEMBLY................................................................................................542
REMOVAL OF SPROCKET...............................................................................................................543
INSTALLATION OF SPROCKET..........................................................................................................543
ASSEMBLY OF IDLER ASSEMBLY........................................................................................................544
ASSEMBLY OF TRACK ROLLER ASSEMBLY.................................................................................................546
EXPANSION OF TRACK SHOE ASSEMBLY..................................................................................................547
INSTALLATION OF TRACK SHOE ASSEMBLY...............................................................................................547
REMOVAL OF HYDRAULIC PUMP ASSEMBLY................................................................................................548
INSTALLATION OF HYDRAULIC PUMP ASSEMBLY...........................................................................................549
REMOVAL OF OIL SEAL IN HYRAULIC PUMP INPUT SHAFT..................................................................................550
INSTALLATION OF OIL SEAL IN HYRAULIC PUMP INPUT SHAFT.............................................................................550
REMOVAL OF CONTROL VALVE ASSEMBLY.................................................................................................551
INSTALLATION OF CONTROL VALVE ASSEMBLY............................................................................................553
DISASSEMBLY OF CONTROL VALVE ASSEMBLY.............................................................................................554
ASSEMBLY OF CONTROL VALVE ASSEMBLY................................................................................................556
DISASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY..................................................................................557
DISASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY..........................................................................................558
ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY.............................................................................................558
REMOVAL OF WORK EQUIPMENT ASSEMBLY................................................................................................559
INSTALLATION OF WORK EQUIPMENT ASSEMBLY...........................................................................................560
DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY........................................................................................562
ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY...........................................................................................564
REMOVAL OF OPERATOR'S CAB ASSEMBLY................................................................................................568
INSTALLATION OF OPERATOR'S CAB ASSEMBLY...........................................................................................569
REMOVAL OF FLOOR FRAME ASSEMBLY...................................................................................................570
INSTALLATION OF FLOOR FRAME ASSEMBLY..............................................................................................571
REMOVAL OF AIR CONDITIONER COMPRESSOR ASSEMBLY....................................................................................572
INSTALLATION OF AIR CONDITIONER COMPRESSOR ASSEMBLY...............................................................................572
REMOVAL OF AIR CONDITIONER CONDENSER ASSEMBLY.....................................................................................573
INSTALLATION OF AIR CONDITIONER CONDENSER ASSEMBLY................................................................................573
REMOVAL OF AIR CONDITIONER UNIT ASSEMBLY..........................................................................................574
INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY.....................................................................................575
REMOVAL, INSTALLATION OF COUNTERWEIGHT ASSEMBLY...................................................................................576
REMOVAL OF MONITOR PANEL ASSEMBLY.................................................................................................577
INSTALLATION OF MONITOR PANEL ASSEMBLY............................................................................................577
REMOVAL OF SWING MOTOR AND SWING MACHINERY ASSEMBLY...............................................................................578
INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY..........................................................................578
DISASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY...........................................................................579
ASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY..............................................................................581
REMOVAL OF HYDRAULIC TANK ASSEMBLY................................................................................................585
INSTALLATION OF HYDRAULIC TANK ASSEMBLY...........................................................................................586
90 OTHERS.............................................................................................................................588
HYDRAULIC CIRCUIT DIAGRAM.........................................................................................................590
ELECTRICAL CIRCUIT DIAGRAM (1/4)..................................................................................................591
ELECTRICAL CIRCUIT DIAGRAM (2/4)..................................................................................................592
ELECTRICAL CIRCUIT DIAGRAM (3/4)..................................................................................................593
ELECTRICAL CIRCUIT DIAGRAM (4/4)..................................................................................................594
KOMATSU PC308USLC-3 HYDRAULIC EXCAVATOR SHOP MANUAL 20001 AND UP – PDF DOWNLOAD:
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