Komatsu PC300-7,PC300LC-7, PC350-7,PC350LC-7 Excavator Shop Manual PDF

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Komatsu PC300-7,PC300LC-7, PC350-7,PC350LC-7 Hydraulic Excavator Shop Manual SEBM025805 – PDF DOWNLOAD

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Komatsu PC300-7,PC300LC-7, PC350-7,PC350LC-7 Hydraulic Excavator Shop Manual SEBM025805 – PDF DOWNLOAD

Language : English
Pages : 646
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Komatsu PC300-7,PC300LC-7, PC350-7,PC350LC-7 Hydraulic Excavator Shop Manual SEBM025805 – PDF DOWNLOAD

• MACHINE MODEL            SERIAL No.
  PC300-7                              40001 and up
  PC300LC-7                         40001 and up
  PC350-7                              20001 and up
  PC350LC-7                         20001 and up

MAIN MENU 0
COVER 1
CONTENTS . 2
FOREWORD . 9
HOW TO READ THE SHOP MANUAL 10
HOISTING INSTRUCTIONS 11
METHOD OF DISSASSEMBLY, CONNECTING PUSH-RULL TYPE COUPLER 12
COATING MATERIALS 14
STANDARD TIGHTENING TORQUE . 16
CONVERSION TABLE . 20
UNITS 26
01 GENERAL . 27
SPECIFICATION DIMENSION DRAWINGS . 28
SPECIFICATIONS . 30
PC300-7, PC300LC-7 . 30
PC350-7, PC350LC-7 . 32
WEIGHT TABLE . 34
PC300-7, PC300LC-7 . 34
PC350-7, PC350LC-7 . 36
FUEL, COOLANT AND LUBRICANTS . 38
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD 39
ENGINE RELATED PARTS . 40
RADIATOR – OIL COOLER – AFTERCOOLER 41
POWER TRAIN 42
FINAL DRIVE . 44
SWING MACHINERY 46
SWING CIRCLE . 48
TRACK FRAME – RECOIL SPRING 50
IDLER 52
CARRIER ROLLER . 54
TRACK ROOLER . 55
TRACK SHOE . 56
HYDRAULIC EQUIPMENT LAYOUT DRAWING . 60
HYDRAULIC TANK . 62
HYDRAULIC PUMP . 64
VARIABLE VOLUME VALVE 85
CONTROL VALVE 88
CLSS .104
SELF PRESSURE REDUCING VALVE .107
SWING MOTOR 110
REVERSE PREVENTION VALVE .115
CENTER SWIVEL JOINT 117
TRAVEL MOTOR .118
TRAVEL JUNCTION VALVE 128
TRAVEL PPC SHUTTLE VALVE .130
VALVE CONTROL 134
WORK EQUIPMENT – SWING PPC VALVE .135
TRAVEL PPC VALVE .139
SERVICE PPC VALVE 148
SOLENOID VALVE .151
PPC ACCUMULATOR 153
RETURN OIL FILTER 154
BOOM HYDRAULIC DRIFT PREVENTION VALVE 156
QUICK RETURN VALVE .162
LIFT CHECK VALVE .164
ATTACHMENT CIRCUIT SELECTOR VALVE 165
HYDRAULIC CYLINDER .167
WORK EQUIPMENT .169
AIR CONDITIONER 175
ENGINE CONTROL .176
ELECTRONIC CONTROL SYSTEM 182
MULTI MONITOR SYTEM 206
7-SEGMENT MONITOR SYSTEM .226
SENSOR .233
20 TESTING AND ADJUSTING .236
STANDARD VALVE TABLE FOR ENGINE RELATED PARTS 237
STANDARD VALVE TABLE FOR CHASSIS RELATED PARTS .238
TESTING AND ADJUSTING 246
TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING .247
INSPECTION AND ADJUSTMENT OF ENGINE RPM 249
MEASUREMENT OF AIR BOOST PRESSURE 251
MEASUREMENT OF EXHAUST GAS COLOR .252
ADJUSTMENT OF VALVE CLEARANCE 253
MEASUREMENT OF COMPRESSION PRESSURE 255
MEASUREMENT OF BLOW-BY PRESSURE 256
INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING .257
MEASUREMENT OF ENGINE OIL PRESSURE .259
ADJUSTMENT OF ENGINE SPEED SENSOR 260
INSPECTION AND ADJUSTMENT OF AIR COMPRESSOR BELT TENSION .260
EMERGENCY ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM .261
MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS 262
INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION 263
INSPECTION OF WEAR ON SPROCKET .263
INSPECTION AND ADJUSTMENT OF HYDRAULIC OIL PRESSURE IN HYDRAULIC CIRCUIT FOR WORK EQUIPMENT, SWING AND TRAVEL 264
INSPECTION AND ADJUSTMENT OF CONTROL CIRCUIT OIL PRESSURE 268
INSPECTION AND ADJUSTMENT OF PUMP PC CONTROL CIRCUIT OIL PRESSURE 269
INSPECTION AND ADJUSTMENT OF PUMP LS CONTROL CIRCUIT OIL PRESSURE 272
MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE 276
MEASUREMENT OF PPC VALVE OUTPUT PRESSURE .279
ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE .280
INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT .281
RELEASE OF REMAINING PRESSURE IN HYDRAULIC CIRCUIT .282
MEASUREMENT OF OIL LEAKAGE AMOUNT 283
AIR BLEEDING OF VARIOUS PARTS 285
INSPECTION PROCEDURES FOR DIODE 287
SPECIAL FUNCTION OF MULTI-MONITOR PANEL 288
DISPLAY METHOD AND SPECIAL FUNCTIONS OF 7-SEGMENT MONITOR PANEL 312
PREPARATIONS FOR TROUBLESHOOTING ELECTRICAL SYSTEM .328
TROUBLESHOOTING 333
POINTS TO REMEMBER WHEN TROUBLESHOOTING 334
SEQUENCE OF EVENTS IN TROUBLESHOOTING 335
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE .336
CHECKS BEFORE TROUBLESHOOTING 344
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING .345
CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM 349
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS .367
TROUBLESHOOTING WHEN SERVICE CODE “ELECTRICAL SYSTEM” AND FAILURE CODE “MECHANICAL SYSTEM” ARE INDICATED 389
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE .391
SERVICE CODE IN ELECTRICAL SYSTEM [E101] (ABNORMAL DATA IN ERROR HISTORY) 393
SERVICE CODE IN ELECTRICAL SYSTEM [E112] (SHORT-CIRCUITING IN NORMAL ROTATION SYSTEM OF WINDSHEILD WIPER MOTOR DRIVE) 395
SERVICE CODE IN ELECTRICAL SYSTEM [E113] (SHORT-CIRCUITING IN NORMAL ROTATION SYSTEM OF WINDSHEILD WIPER MOTOR DRIVE) 397
SERVICE CODE IN ELECTRICAL SYSTEM [E114] (SHORT-CIRCUITING IN WINDOW WASHER DRIVE SYSTEM) 399
SERVICE CODE IN ELECTRICAL SYSTEM [E115] (ABNORMAL WINDSHIELD WIPER MOTION) 401
SERVICE CODE IN ELECTRICAL SYSTEM [E116] (ABNORMALITY IN RETRACTING WINDSHELID WIPER) 403
SERVICE CODE IN ELECTRICAL SYSTEM [E201] (SHORT-CIRCUITING IN TRAVEL INTERLOCKING SOLENOID) 405
SERVICE CODE IN ELECTRICAL SYSTEM [E203] (SHORT-CIRCUITING IN SWING AQND PARKING BRAKE SOLENOID-IN GOVERNOR – PUMP CONTROLLER 407
SERVICE CODE IN ELECTRICAL SYSTEM [E204] (SHORT-CIRCUITING IN MERGE/DIVIDE SOLENOID) .409
SERVICE CODE IN ELECTRICAL SYSTEM [E205] (SHORT-CIRCUITING IN 2-STAGE RELIEF SOLENOID) .411
SERVICE CODE IN ELECTRICAL SYSTEM [E206] (SHORT-CIRCUITING IN TRAVEL SPEED SHIFTING SOLENOID) 413
SERVICE CODE IN ELECTRICAL SYSTEM [E211] (DISCONNECTION IN TRAVEL INTERLOCKING SOLENOID 415
SERVICE CODE IN ELECTRICAL SYSTEM [E213] (DISCONNECTION IN SWING PARKING BRAKE SOLENOID) .417
SERVICE CODE IN ELECTRICAL SYSTEM [E214] (DISCONNECTION MERGE/DIVIDE SOLENOID) .419
SERVICE CODE IN ELECTRICAL SYSTEM [E215] (DISCONNECTION IN 2-STAGE RELIEF SOLENOID) 421
SERVICE CODE IN ELECTRICAL SYSTEM [E216] (DISCONNECTION IN TRAVEL SPEED SHIFTING SOLENOID) .423
SERVICE CODE IN ELECTRICAL SYSTEM [E217] (ABNORMALITY IN INPUTTING MODEL CODE) .425
SERVICE CODE IN ELECTRICAL SYSTEM [E218] (DISCONNECTION OF S-NET SIGNAL) .427
SERVICE CODE IN ELECTRICAL SYSTEM [E222] (SHORT-CIRCUITING IN LS-EPC SOLENOID) .429
SERVICE CODE IN ELECTRICAL SYSTEM [E223] (DISCONNECTION IN LS-EPC SOLENOID) 430
SERVICE CODE IN ELECTRICAL SYSTEM [E224] (ABNORMALITY IN F PUMP PRESSURE SENSOR) .431
SERVICE CODE IN ELECTRICAL SYSTEM [E225] (ABNORMALITY IN R PUMP PRESSURE SENSOR) .433
SERVICE CODE IN ELECTRICAL SYSTEM [E226] (ABNORMALITY IN PRESSURE SENSOR POWER SOURCE) .435
SERVICE CODE IN ELECTRICAL SYSTEM [E227] (ABNORMALITY IN ENGINE ROTATION SENSOR IN GOVERNOR – PUMP CONTROLLER SYSTEM) 437
SERVICE CODE IN ELECTRICAL SYSTEM [E228] (SHORT-CIRCUITING IN ATTACHMENT RETURN SWITCHING RELAY) .438
SERVICE CODE IN ELECTRICAL SYSTEM [E232] (SHORT-CIRCUITING IN PC-EPC SOLENOID) .439
SERVICE CODE IN ELECTRICAL SYSTEM [E233] (DISCONNECTION IN PC-EPC SOLENOID SYSTEM) .441
SERVICE CODE IN ELECTRICAL SYSTEM [E238] (DISCONNECTION IN ATTACHMENT RETURN SWITCHING RELAY) 443
SERVICE CODE IN ELECTRICAL EQUIPMENT [E245] (SHORT-CIRCUITING IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC) (MULTI-MONITOR ONLY) 445
SERVICE CODE IN ELECTRICAL EQUIPMENT [E246] (DISCONNECTION IN ATTACHMENT OIL FLOW RATE ADJUSTING EPC) (MULTI-MONITOR ONLY) .446
SERVICE CODE IN ELECTRICAL SYSTEM [E256] (INCORRECT NONVOLATILE MEMORY DATA) .447
SERVICE CODE IN ELECTRICAL SYSTEM [E304] (SHORT CIRCUIT OF ENGINE STOP SOLENIOD RELAY) .448
SERVICE CODE IN ELECTRICAL SYSTEM [E306] (ABNORMALITY IN GOVERNOR POTENTIOMETER) .450
SERVICE CODE IN ELECTRICAL SYSTEM [E308] (ABNORMALITY IN FUEL DIAL) 452
SERVICE CODE IN ELECTRICAL SYSTEM [E314] (DISCOONECTION OF ENGINE STOP SOLENOID RELAY) 454
SERVICE CODE IN ELECTRICAL SYSTEM [E315] (SHORT-CIRCUIT IN BATTERY RELAY) .456
SERVICE CODE IN ELECTRICAL SYSTEM [E316] (STEP-OUT IN GOVERNOR MOTOR) .458
SERVICE CODE IN ELECTRICAL SYSTEM [E317] (DISCONNECTION IN GOVERNOR MOTOR PHASE A AND PHASE B) 459
SERVICE CODE IN ELECTRICAL SYSTEM [E318] (SHORT-CIRCUITING IN GOVERNOR MOTOR PHASE A AND PHASE B) .461
FAILURE CODE IN MECHANICAL SYSTEM [A000N1] (OUT-OF RATE ENGINE ROTATION AT HIGH IDLING) .463
FAILURE CODE IN MECHANICAL SYSTEM [A000N2] (OUT-OF RATE ENGINE ROTATION AT LOW IDLING) 463
FAILURE CODE IN MECHANICAL SYSTEM [AA10NX] (AIR CLEANER CLOGGING) .464
FAILURE CODE IN MECHANICAL SYSTEM [AB00KE] (ABNORMALLY LOWERED CHARGING VOLTAGE) .465
FAILURE CODE IN MECHANICAL SYSTEM [B@BAZG] (ABNORMALLY LOWERED ENGINE OIL PRESSURE) 467
FAILURE CODE IN MECHANICAL SYSTEM [B@BAZK] (ABNORMALLY LOWERED ENGINE OIL LEVEL) .468
FAILURE CODE IN MECHANICAL SYSTEM [B@BCNS] (ENGINE COOLING WATER OVERHEATING) 469
FAILURE CODE IN MECHANICAL SYSTEM [B@BCZK] (ABNORMALLY LOWERED RADIATOR WATER LEVEL) .470
FAILURE CODE IN MECHANICAL SYSTEM [B@HANS] (HYDRAULIC OIL OVERHEATING) .471
TROUBLESHOOTING OF ELECTRICAL SYSTEM (E-MODE) 472
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE .473
E-1 ENGINE DOES NOT START 474
E-2 ENGINE STOPS WHILE IN OPERATION 479
E-3 ENGINE SPEED IS IRREGULAR, OR THERE IS HUNTING .480
E-4 ENGINE DOES NOT STOP .482
E-5 AUTO-DECELERATOR DOES NOT WORK .484
E-6 AUTO ENGINE WARM-UP DEVICE DOES NOT WORK .485
E-7 PREHEATER DOES NOT WORK 486
E-8 ALL WORK EQUIPMENT, SWING AND TRAVEL DO NOT MOVE .488
E-9 ONE-TOUCH POWER-MAX. SWITCH DOES NOT WORK 490
E-10 NO DISPLAY IN MONITOR PANEL AT ALL 491
E-11 PART OF DISPLAY ON MONITOR PANEL IS MISSING .492
E-12 MONITOR PANEL DISPLAYS CONTENTS IRRELEVANT TO THE MODEL .492
E-13 FUEL LEVEL MONOTOR RED LAMP LIGHTS UP WHILE ENGINE IS RUNNING .493
E-14 ENGINE COOLING WATER TEMPERATURE GAUGE DOES NOT INDICATE CORRECTLY 494
E-15 HYDRAULIC OIL TEMPERATURE GAUGE DOES NOT DISPLAY CORRECTLY 495
E-16 FUEL GAUGE DOES NOT DISPLAY CORRECTLY .496
E-17 SWING LOCK MONITOR DOES NOT DISPLAY CORRECTLY .497
E-18 WHEN THE MONITOR SWITCH IS OPERATED, NO DISPLAY APPEARS .498
E-19 WINDSHEILD WIPER DOES NOT WORK 500
E-20 ALARMING BUZZER CANNOT BE CANCELLED .502
E-21 “BOOM RAISE” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .503
E-22 “BOOM LOWER” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .504
E-23 “ARM DIGGING” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION 505
E-24 “ARM DUMPPING” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .506
E-25 “BUCKET DIGGING” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .507
E-26 “BUCKET DUMPING” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .508
E-27 “SWING” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION 510
E-28 “TRAVEL” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .512
E-29 “TRAVEL DIFFERENTIAL PRESSURE” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION .514
E-30 “SERVICE” IS NOT CORRECTLY DISPLAYED IN MONITOR FUNCTION 516
E-31 AIR CONDITIONER DOES NOT WORK .518
E-32 TRAVEL ALARM DOES NOT SOUND .519
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H-MODE) 520
SYSTEM CHART FOR HYDRAULIC AND MECHANICAL SYSTEMS 521
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE .523
H-1 ALL WORK EQUIPMENT LACK POWER, OR TRAVEL AND SWING SPEEDS ARE SLOW .524
H-2 ENGINE SPEED SHARPLY DROPS OR ENGINE STALLS 525
H-3 NO WORK EQUIPMENT, TRAVEL OR SWING MOVE 526
H-4 ABNORMAL NOISE IS HEARD FROM AROUND HYDRAULIC PUMP .526
H-5 AUTO-DECELERATOR DOES NOT WORK .527
H-6 FINE CONTROL MODE DOES NOT FUNCTION 527
H-7 BOOM MOVES SLOWLY OR LACKS POWER .528
H-8 ARM MOVES SLOWLY OR LACKS POWER 529
H-9 BUCKET MOVES SLOWLY OR LACKS POWER .530
H-10 WORK EQUIPMENT DOES NOT MOVE 530
H-11 WORK EQUIPMENT HAS A BIT TOO FAST HYDRAULIC DRIFT .531
H-12 WORK EQUIPMENT HAS A BIG TIME LAG .532
H-13 OTHER WORK EQUIPMENT MOVES WHEN RELIEVING SINGLE CIRCUIT 532
H-14 ONE-TOUCH POWER MAX, SWITCH DOES NOT OPERATE 532
H-15 IN COMPOUND OPERATION, WORK EQUIPMENT WITH LARGER LOAD MOVES SLOWLY .533
H-16 IN SWING + BOOM RAISE OPERATION, BOOM MOVES SLOWLY 533
H-17 IN SWING + TRAVEL, TRAVEL SPEED DROPS SHARPLY .533
H-18 MACHINE SWERVES IN TRAVEL 534
H-19 MACHINE TRAVEL SLOWLY .535
H-20 MACHINE CANNOT BE EASILY STEERED OR LACKS POWER .536
H-21 TRAVEL SPEED DOES NOT SHIFT, OR IT IS TOO SLOW OR FAST 537
H-22 TRACK SHOE DOES NOT TURN (ONE SIDE ONLY) 537
H-23 MACHINE DOES NOT SWING 538
H-24 SWING ACCELERATION IS POOR, OR SWING SPEED IS SLOW) .539
H-25 EXCESSIVE OVERRUN WHEN STOPPING SWING .540
H-26 THERE IS BIG SHOCK WHEN STOPPING SWING .541
H-27 THERE IS BIG ABNORMAL NOISE CAUSED WHEN STOPPING SWING 541
H-28 SWING NATURAL DRIFT IS TOO BIG 542
30 DISSASSEMBLY AND ASSEMBLY .543
HOW TO READ MANUAL .545
REMOVAL AND INSTALLATION OF ASSEMBLIES .545
DISASSEMBLY AND ASSEMBLY OF ASSEMBLIES .546
PRECAUTIONS WHEN PERFORMING OPERATION 547
SPECIAL TOOL LIST 549
STARTING MOTOR ASSEMBLY 552
REMOVAL 552
INSTALLATION .552
FUEL INJECTION PUMP ASSEMBLY .553
SPECIAL TOOLS 553
REMOVAL 553
INSTALLATION .555
ENGINE FRONT SEAL 557
REMOVAL 557
INSTALLATION .557
ENGINE REAR SEAL .558
REMOVAL 558
INSTALLATION .558
CYLINDER HEAD ASSEMBLY .560
SPECIAL TOOLS 560
REMOVAL 560
INSTALLATION .563
RADIATOR ASSEMBLY 566
REMOVAL 566
INSTALLATION .567
HYDRAULIC OIL COOLER ASSEMBLY 568
REMOVAL 568
INSTALLATION .569
ENGINE AND HYDRAULIC PUMP ASSEMBLIES .570
SPECIAL TOOLS 570
REMOVAL 570
INSTALLATION .573
FINAL DRIVE ASSEMBLY .574
REMOVAL 574
INSTALLATION .574
DISASSEMBLY AND ASSEMBLY .575
SPECIAL TOOLS 575
DISASSEMBLY .575
ASSEMBLY .578
SKETCHES OF SPECIAL TOOLS 584
SWING MOTOR, SWING MACHINERY ASSEMBLY 585
REMOVAL 585
INSTALLATION .585
DISASSEMBLY AND ASSEMBLY .586
SPECIAL TOOLS 586
DISASSEMBLY .586
ASSEMBLY .588
SKETCHES OF SPECIAL TOOLS 593
CARRIER ROLLER ASSEMBLY 594
SPECIAL TOOLS 594
ASSEMBLY .594
TRACK ROLLER ASSEMBLY 595
SPECIAL TOOLS 595
ASSEMBLY .595
IDLER ASSEMBLY .596
SPECIAL TOOLS 596
DISASSEMBLY 596
ASSEMBLY .597
RECOIL SPRING ASSEMBLY .599
SPECIAL TOOLS 599
DISASSEMBLY 599
ASSEMBLY .600
SPROCKET .601
REMOVAL 601
INSTALLATION .601
TRACK SHOE ASSEMBLY 602
SPECIAL TOOLS .602
EXPANSION OF TRACK SHOE 602
ASSEMBLY .603
SWING CIRCLE ASSEMBLY 604
REMOVAL 604
INSTALLATION .604
REVOLVING FRAME ASSEMBLY .605
REMOVAL 605
INSTALLATION .607
CENTER SWIVEL JOINT ASSEMBLY .608
REMOVAL 608
INSTALLATION .609
DISASSEMBLY AND ASSEMBLY .610
SPECIAL TOOLS 610
DISASSEMBLY 610
ASSEMBLY .610
HYDRAULIC TANK ASSEMBLY 611
REMOVAL 611
INSTALLATION .612
CONTROL VALVE ASSEMBLY .613
REMOVAL 613
INSTALLATION .615
DISASSEMBLY AND ASSEMBLY .616
SPECIAL TOOLS 616
ASSEMBLY .617
HYDRAULIC PUMP ASSEMBLY 618
SPECIAL TOOLS 618
REMOVAL 618
INSTALLATION .620
OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT .621
REMOVAL .621
INSTALLATION .621
WORK EQUIPMENT PPC VALVE ASSEMBLY 622
ASSEMBLY .622
TRAVEL PPC VALVE ASSEMBLY 623
ASSEMBLY .623
HYDRAULIC CYLINDER ASSEMBLY .624
SPECIAL TOOLS 624
DISASSEMBLY 624
ASSEMBLY .626
WORK EQUIPMENT ASSEMBLY 630
SPECIAL TOOLS 630
REMOVAL 630
INSTALLATION .631
AIR CONDITIONER UNIT ASSEMBLY 633
SPECIAL TOOLS 633
REMOVAL 633
INSTALLATION .635
COUNTERWEIGHT ASSEMBLY .636
REMOVAL 636
INSTALLATION .636
OPERATOR’S CAB ASSEMBLY 637
REMOVAL 637
INSTALLATION .638
MONITOR ASSEMBLY .639
REMOVAL 639
INSTALLATION .639
GOVERNOR PUMP CONTROLLER ASSEMBLY 640
REMOVAL 640
INSTALLATION .640
90 OTHERS 641
HYDRAULIC DIAGRAM 642
ELECTRICAL DIAGRAM (1/4) .643
ELECTRICAL DIAGRAM (2/4) .644
ELECTRICAL DIAGRAM (3/4) .645
ELECTRICAL DIAGRAM (4/4) .646

DESCRIPTION:

Komatsu PC300-7,PC300LC-7, PC350-7,PC350LC-7 Hydraulic Excavator Shop Manual SEBM025805 – PDF DOWNLOAD

• MACHINE MODEL            SERIAL No.
  PC300-7                              40001 and up
  PC300LC-7                         40001 and up
  PC350-7                              20001 and up
  PC350LC-7                         20001 and up

G.B 27/12/24