








$25.00
Generation
7Language
EnglishModel of Truck
PC400-7, PC400LC-7, PC450-7, PC450LC-7Region
JapanTruck Class
PC400, PC450Illustrated factory Workshop Manual for Komatsu Crawler Excavators Models PC400-7, PC400LC-7, PC450-7 and PC450LC-7.
This manual will assist you in diagnosing, repairing, and adjusting for your crawler excavator.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.
Covered Models (Japan):
PC400-7 (SN: 50001-)
PC400LC-7 (SN: 50001-)
PC450-7 (SN: 20001-)
PC450LC-7 (SN: 20001-)
Format: PDF, 874 pages
Language: English
Table of Contents:
GENERAL
SPECIFICATION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
ENGINE RELATED PARTS
RADIATOR・OIL COOLER・AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SPROCKET
SWING MACHINERY
SWING CIRCLE
TRACK FRAME AND RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
HYDRAULIC PIPING DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
LS(PC)-EPC VALVE
VARIABLE VOLUME VALVE
CONTROL VALVE
CLSS
FUNCTIONS AND OPERATION BY VALVE
ATTACHMENT CIRCUIT SELECTOR VALVE
HOLDING VALVE
SWING MOTOR
REVERSAL PREVENTION VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
VALVE CONTROL
TRAVEL PPC SHUTTLE VALVE
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
SOLENOID VALVE
PPC ACCUMULATOR
RETURN OIL FILTER
HYDRAULIC CYLINDER
WORK EQUIPMENT
AIR CONDITIONER
ENGINE CONTROL
ELECTRONIC CONTROL SYSTEM
MONITOR SYSTEM
SEGMENT MONITOR SYSTEM
SENSOR
TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE
STANDARD VALUE TABLE FOR CHASSIS (BACKHOE SPECIFICATION)
STANDARD VALUE TABLE FOR CHASSIS (LOADING SHOVEL SPECIFICATION)
TESTING AND ADJUSTING
TROUBLESHOOTING
DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
COATING MATERIALS LIST
SPECIAL TOOL LIST
REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE REAR SEAL
REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL
REMOVAL AND INSTALLATION OF FUEL SUPPLY PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF FUEL INJECTOR ASSEMBLY
REMOVAL AND INSTALLATION OF NOZZLE TIP
REMOVAL AND INSTALLATION OF STARTING MOTOR ASSEMBLY
REMOVAL AND INSTALLATION OF RADIATOR ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE AND HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF SWING CIRCLE ASSEMBLY
REMOVAL AND INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY
REMOVAL AND INSTALLATION OF SPROCKET
REMOVAL AND INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY
EXPANSION AND INSTALLATION OF TRACK SHOE ASSEMBLY
REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY
REMOVAL AND INSTALLATION OF OPERATOR`S CAB
REMOVAL AND INSTALLATION OF MONITOR ASSEMBLY
REMOVAL AND INSTALLATION OF PUMP CONTROLLER
REMOVAL AND INSTALLATION OF ENGINE CONTROLLER
REMOVAL AND INSTALLATION OF REVOLVING FRAME ASSEMBLY
REMOVAL AND INSTALLATION OF COUNTERWEIGHT ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT
REMOVAL AND INSTALLATION OF CONTROL VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY
REMOVAL AND INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY
REMOVAL AND INSTALLATION OF WORK EQUIPMENT ASSEMBLY
REMOVAL AND INSTALLATION OF OPERATOR`S CAB GLASS (STUCK GLASS)
REMOVAL AND INSTALLATION OF FRONT WINDOW ASSEMBLY
OTHERS
HYDRAULIC CIRCUIT DIAGRAM (1/2)
HYDRAULIC CIRCUIT DIAGRAM (2/2)
ELECTRICAL CIRCUIT DIAGRAM (1/6)
ELECTRICAL CIRCUIT DIAGRAM (2/6)
ELECTRICAL CIRCUIT DIAGRAM (3/6)
ELECTRICAL CIRCUIT DIAGRAM (4/6)
ELECTRICAL CIRCUIT DIAGRAM (5/6)
ELECTRICAL CIRCUIT DIAGRAM (6/6)
AIR CONDITIONER ELECTRICAL CIRCUIT
ELECTRICAL CIRCUIT DIAGRAM (A1 SIZE)
CONNECTORS TABLE AND ARRANGEMENT DRAWING (A1 SIZE)
This manual will assist you in diagnosing, repairing, and adjusting for your crawler excavator.
You can use a Windows, Mac, or Android device to view this manual. You only need to have a PDF reader installed.
Covered Models (Japan):
PC400-7 (SN: 50001-)
PC400LC-7 (SN: 50001-)
PC450-7 (SN: 20001-)
PC450LC-7 (SN: 20001-)
Format: PDF, 874 pages
Language: English
Table of Contents:
GENERAL
SPECIFICATION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
ENGINE RELATED PARTS
RADIATOR・OIL COOLER・AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SPROCKET
SWING MACHINERY
SWING CIRCLE
TRACK FRAME AND RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
HYDRAULIC PIPING DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
LS(PC)-EPC VALVE
VARIABLE VOLUME VALVE
CONTROL VALVE
CLSS
FUNCTIONS AND OPERATION BY VALVE
ATTACHMENT CIRCUIT SELECTOR VALVE
HOLDING VALVE
SWING MOTOR
REVERSAL PREVENTION VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
VALVE CONTROL
TRAVEL PPC SHUTTLE VALVE
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
SOLENOID VALVE
PPC ACCUMULATOR
RETURN OIL FILTER
HYDRAULIC CYLINDER
WORK EQUIPMENT
AIR CONDITIONER
ENGINE CONTROL
ELECTRONIC CONTROL SYSTEM
MONITOR SYSTEM
SEGMENT MONITOR SYSTEM
SENSOR
TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE
STANDARD VALUE TABLE FOR CHASSIS (BACKHOE SPECIFICATION)
STANDARD VALUE TABLE FOR CHASSIS (LOADING SHOVEL SPECIFICATION)
TESTING AND ADJUSTING
TROUBLESHOOTING
DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
COATING MATERIALS LIST
SPECIAL TOOL LIST
REMOVAL AND INSTALLATION OF CYLINDER HEAD ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE REAR SEAL
REMOVAL AND INSTALLATION OF ENGINE FRONT SEAL
REMOVAL AND INSTALLATION OF FUEL SUPPLY PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF FUEL INJECTOR ASSEMBLY
REMOVAL AND INSTALLATION OF NOZZLE TIP
REMOVAL AND INSTALLATION OF STARTING MOTOR ASSEMBLY
REMOVAL AND INSTALLATION OF RADIATOR ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC OIL COOLER ASSEMBLY
REMOVAL AND INSTALLATION OF ENGINE AND HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF SWING CIRCLE ASSEMBLY
REMOVAL AND INSTALLATION OF SWING MOTOR AND SWING MACHINERY ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF SWING MOTOR AND SWING MACHINERY ASSEMBLY
REMOVAL AND INSTALLATION OF SPROCKET
REMOVAL AND INSTALLATION OF TRAVEL MOTOR AND FINAL DRIVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF FINAL DRIVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CARRIER ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL ROLLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF IDLER ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF RECOIL SPRING ASSEMBLY
EXPANSION AND INSTALLATION OF TRACK SHOE ASSEMBLY
REMOVAL AND INSTALLATION OF AIR CONDITIONER UNIT ASSEMBLY
REMOVAL AND INSTALLATION OF OPERATOR`S CAB
REMOVAL AND INSTALLATION OF MONITOR ASSEMBLY
REMOVAL AND INSTALLATION OF PUMP CONTROLLER
REMOVAL AND INSTALLATION OF ENGINE CONTROLLER
REMOVAL AND INSTALLATION OF REVOLVING FRAME ASSEMBLY
REMOVAL AND INSTALLATION OF COUNTERWEIGHT ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC TANK ASSEMBLY
REMOVAL AND INSTALLATION OF HYDRAULIC PUMP ASSEMBLY
REMOVAL AND INSTALLATION OF OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT
REMOVAL AND INSTALLATION OF CONTROL VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CONTROL VALVE ASSEMBLY
REMOVAL AND INSTALLATION OF CENTER SWIVEL JOINT ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF CENTER SWIVEL JOINT ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF WORK EQUIPMENT PPC VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF TRAVEL PPC VALVE ASSEMBLY
DISASSEMBLY AND ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLY
REMOVAL AND INSTALLATION OF WORK EQUIPMENT ASSEMBLY
REMOVAL AND INSTALLATION OF OPERATOR`S CAB GLASS (STUCK GLASS)
REMOVAL AND INSTALLATION OF FRONT WINDOW ASSEMBLY
OTHERS
HYDRAULIC CIRCUIT DIAGRAM (1/2)
HYDRAULIC CIRCUIT DIAGRAM (2/2)
ELECTRICAL CIRCUIT DIAGRAM (1/6)
ELECTRICAL CIRCUIT DIAGRAM (2/6)
ELECTRICAL CIRCUIT DIAGRAM (3/6)
ELECTRICAL CIRCUIT DIAGRAM (4/6)
ELECTRICAL CIRCUIT DIAGRAM (5/6)
ELECTRICAL CIRCUIT DIAGRAM (6/6)
AIR CONDITIONER ELECTRICAL CIRCUIT
ELECTRICAL CIRCUIT DIAGRAM (A1 SIZE)
CONNECTORS TABLE AND ARRANGEMENT DRAWING (A1 SIZE)
General
Generation
7Language
EnglishModel of Truck
PC400-7, PC400LC-7, PC450-7, PC450LC-7Region
JapanTruck Class
PC400, PC450Type of Document
Workshop ManualType of Truck
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