Komatsu PC300LC, PC300HD Hydraulic Excavators & Logging Excavator PC300LL Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Komatsu PC300LC-6, PC300HD-6 Hydraulic Excavator, Logging Excavator PC300LL-6 avance, with all the technical information to maintain, diagnose, repair, rebuild like professional mechanics.
Komatsu PC300LC-6, PC300HD-6 Hydraulic Excavator, Logging Excavator PC300LL-6 avance workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
PRODUCT DETAILS:
Total Pages: 3,445 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
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MAIN SECTIONS
CEBM018703 - PC300LC/HD-8...1
CONTENTS...2
REVISED PAGES...3
SAFETY...13
Safety Notice...13
IMPORTANT SAFETY NOTICE...13
General Precautions...13
Preparations For Work...13
Precautions During Work...13
GENERAL...15
HOW TO READ THE SHOP MANUAL...16
Volumes...16
Distribution and Updating...16
Filing Method...16
Revised Edition Mark...16
Revisions...16
Symbols...16
HOISTING INSTRUCTIONS...17
Hoisting...17
Wire Ropes...17
PUSH PULL COUPLER...18
Type 1...18
Disconnection...18
Connection...18
Type 2...19
Disconnection...19
Connection...19
Type 3...20
Disconnection...20
Connection...20
COATING MATERIALS...21
STANDARD TIGHTENING TORQUE...23
Standard Tightening Torque of Bolts And Nuts...23
Tightening Torque of Hose Nuts...24
Tightening Torque of Split Flange Bolts...24
Tightening Torque for Flared Nuts...24
Table of Tightening Torques for O-ring Boss Piping Joints...25
Table of Tightening Torques for O-ring Boss Plugs...25
Tightening Torque Table for Hoses (Taper Seal Type and Face Seal Type)...25
ELECTRIC WIRE CODE...26
Classification by Thickness...26
Classification by Color and Code...26
CONVERSION TABLES...27
Method of Using the Conversion Table...27
01 GENERAL...33
SPECIFICATION DIMENSION DRAWINGS...34
Dimensions...34
Working Ranges...35
SPECIFICATIONS...36
WEIGHT TABLE...39
FUEL, COOLANT, AND LUBRICANTS...41
10 STRUCTURE, FUNCTION ANDMAINTENANCE STANDARD...43
ENGINE AND COOLING SYSTEM...46
Engine Related Parts...46
Radiator, Oil Cooler and Aftercooler...47
POWER TRAIN...48
Power Train...48
Final Drive...50
PC300LC-8...50
PC300HD-8...52
Sprocket...54
PC300LC-8...54
PC300HD-8...56
Swing Machinery...58
Swing Circle...60
UNDERCARRIAGE AND FRAME...62
Track Frame and Recoil Spring...62
PC300LC-8...62
PC300HD-8...64
Idler...66
PC300LC-8...66
PC300HD-8...68
Carrier Roller...70
PC300LC-8...70
PC300HD-8...71
Track Roller...72
PC300LC-8...72
PC300HD-8...74
Track Shoe...76
PC300LC-8...76
PC300HD-8...78
Triple Grouser Shoe...80
PC300LC-8...80
PC300HD-8...81
HYDRAULIC SYSTEM...82
Hydraulic Equipment Layout Drawing...82
Hydraulic Tank and Filter...84
Hydraulic Pump...86
Type: HPV125+125...86
LS Valve...92
PC Valve...97
LS(PC)-EPC Valve...104
Variable Volume Valve...107
Control Valve...108
CLSS (Closed Center Load Sensing System)...120
Valve Functions and Operation...124
Hydraulic Circuit Diagram and the Name of Valves...124
Unloader Valve...126
LS Pressure...128
Pressure Compensation Valve...130
Pressure Compensation Valve Inner Shuttle...133
Boom Regeneration Circuit...135
Arm Regeneration Circuit...137
Merge-divider Valve...139
LS Select Valve...141
Self Pressure Reducing Valve...142
Travel Junction Valve...145
Travel PPC Shuttle Valve...147
Boom Drift Prevention Valve...149
Arm Drift Prevention Valve...152
Quick Return Valve...156
Lift Check Valve...158
Main Relief Valve...159
2-Stage Safety-suction Valve...160
Variable Pressure Compensation Valve...162
Attachment Circuit Selector Valve...164
Drift Prevention Valve...166
Valve Control...171
PPC Valve...172
Travel PPC Valve...177
Pressure Reducing Valve...180
Service PPC Valve (with EPC Valve)...186
Service PPC Valve...192
Solenoid Valve...194
PPC Accumulator...196
Return Oil Filter...197
Center Swivel Joint...198
Travel Motor - Type: HMV160ADT-2 - PC300LC-8...200
Parking Brake - PC300LC-8...206
Travel Motor - Type: KMV200ADT-2 - PC300HD-8...214
Parking Brake - PC300HD-8...220
Safety Valve...224
Swing Motor...228
Reverse Prevention Valve...234
Hydraulic Cylinder...238
Boom Cylinder...238
Arm Cylinder...238
Bucket Cylinder...238
WORK EQUIPMENT...240
Work Equipment...240
Dimension Of Arm...242
Dimension Of Bucket...244
AIR CONDITIONER PIPING...246
ELECTRICAL SYSTEM...247
Engine Control...247
Fuel Control Dial...249
Engine Controller...250
Sensors...254
Coolant Temperature Sensor...254
Oil Pressure Switch...254
Engine Speed Sensor...255
Boost Pressure And Temperature Sensor...255
WIF (Water-in-fuel Detection) Sensor...256
Engine Oil Level Sensor...256
ELECTRONIC CONTROL SYSTEM...257
Control Function...257
System Diagram...258
Engine and Pump Control...260
Pump and Valve Control...266
LS Control Function...267
Cut-off Function...267
2-Stage Relief Function...267
Power Maximizing and Machine Push-up...268
Auto-deceleration...270
Auto-warm-up and Overheat Prevention...272
Swing Control...274
Travel Control...276
Attachment Flow Control and Circuit Selector...278
System Component Parts...279
PPC Oil Pressure Switch...279
Oil Pressure Sensor...280
Pump Pressure Sensor (High Pressure)...281
Pump Controller...282
MONITOR SYSTEM...285
Machine Monitor...286
Monitor Control, Display Portion...290
Monitor Items And Display...292
Switches...296
Sensors...313
KOMTRAX Terminal System...315
KOMTRAX Communication Modem - TH300...316
20 STANDARD VALUE TABLES...317
STANDARD VALUE TABLES...318
Engine Related...318
Chassis Related...319
30 TESTING AND ADJUSTING...327
CHASSIS SERVICE TOOLS...329
Sketches of special tools...333
ENGINE...334
Engine Speed...334
Air Boost Pressure...335
Exhaust Gas Color...336
Valve Clearance...338
Compression Pressure...340
Blow-by Pressure...345
Engine Oil Pressure...346
Fuel Pressure...347
Handling During Cylinder Cut-out Operation...352
Handling During No Injection Cranking Operation...352
Fuel Return Rate And Leakage...353
Bleeding Air From Fuel Circuit...356
Fuel Circuit For Leakage...357
AIR COMPRESSOR BELT TENSION...358
FAN BELT...359
ALTERNATOR BELT...360
SWING CIRCLE BEARINGS...361
TRACK SHOE TENSION...362
OIL PRESSURE IN WORK EQUIPMENT...363
OIL PRESSURE IN SWING...363
OIL PRESSURE IN TRAVEL CIRCUIT...363
CONTROL CIRCUIT OIL PRESSURE...368
PUMP PC OIL PRESSURE...369
PUMP LS OIL PRESSURE...372
SOLENOID VALVE OUTPUT PRESSURE...377
PPC VALVE OUTPUT PRESSURE...380
WORK EQUIPMENT VALVE ADJUSTMENT...381
SWING PPC VALVE ADJUSTMENT...381
HYDRAULIC DRIFT IN WORK EQUIPMENT...382
Boom and Bucket Cylinders...382
Arm Cylinder...382
Boom Lock Valve...383
PPC Valve...383
RELEASING HYDRAULIC PRESSURE...384
Oil Leakage Amount...384
BLEEDING AIR FROM VARIOUS SYSTEMS...387
DIODE INSPECTION PROCEDURES...390
MACHINE MONITOR - SPECIAL FUNCTIONS...392
Ordinary Functions and Special Functions of Machine Monitor...394
Operator Mode (Outline)...396
Display of Komatsu Logo...397
Display of Inputting Password...397
Display of Check of Breaker Mode...398
Display of Check Before Starting...398
Display of Warning After Check Before Starting...398
Display of Ending of Maintenance Interval...399
Display of Check of Working Mode and Travel Speed...399
Display of Ordinary Screen...399
Display of End Screen...400
Selection of Auto-deceleration...400
Selection of Working Mode...400
Selection of Travel Speed...401
Operation to Stop Alarm Buzzer...401
Operation of Windshield Wiper...402
Operation of Window Washer...402
Operation of Air Conditioner/heater...402
Operation to Display Camera Mode (if CameraiIs Installed)...403
Operation to Display Clock and Service Meter...403
Check of Maintenance Information...404
Setting and Display of User Mode...404
KOMTRAX Message...405
Display of Energy-saving Guidance...405
Display of Caution Monitor...405
Display of Automatic Judgment of Breaker...406
Display of User Code and Failure Code...406
Function of Checking Display of LCD (Liquid Crystal Display)...408
Function of Checking Service Meter...408
Function of Changing Attachment/Maintenance Password...409
Service Mode...411
Monitoring...413
Abnormality Record (Mechanical Systems)...418
Abnormality Record (Electrical Systems)...419
Abnormality Record (Air-conditioning System/Heater System)...427
Maintenance Record...428
Maintenance Mode Change...429
Phone Number Entry...432
Default (Key-ON Mode)...433
Default (Unit)...434
Default (With/Without Attachment)...435
Default (Attachment/Maintenance Password)...436
Default (Camera)...437
Default (ECO Display)...438
Default (Breaker Detect)...440
Adjustment (Pump Absorption Torque)...441
Adjustment (Low Speed)...442
Adjustment (Attachment Flow Adjustment)...443
Cylinder Cut-Out...444
No Injection...445
Fuel Consumption...447
