Komatsu Excavator PC270-7 service & repair manual

Description Komatsu Excavator PC270-7 service & repair manual

Komatsu Hydraulic Excavator PC270-7 pdf workshop service manual

Serial numbers 10001 and up

Specifications, testing, adjusting, troubleshooting, technical documentation, electrical wiring diagrams, hydraulic schematics, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
GENERAL
SPECIFICATION DIMENSION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT, AND LUBRICANTS

STRUCTURE, FUNCTION, AND MAINTENANCE STANDARD
ENGINE RELATED PARTS
RADIATOR – OIL COOLER – AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SWING MACHINERY
SWING CIRCLE
TRACK FRAME – RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
HYDRAULIC EQUIPMENT LAYOUT DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
CONTROL VALVE
CLSS
SELF PRESSURE REDUCING VALVE
SWING MOTOR
REVERSE PREVENTION VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
TRAVEL JUNCTION VALVE
TRAVEL PPC SHUTTLE VALVE
VALVE CONTROL
WORK EQUIPMENT・SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
SOLENOID VALVE
PPC ACCUMULATOR
RETURN OIL FILTER
BOOM HYDRAULIC DRIFT PREVENTION VALVE
LIFT CHECK VALVE
ATTACHMENT CIRCUIT SELECTOR VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT
AIR CONDITIONER
ENGINE CONTROL
ELECTRONIC CONTROL SYSTEM
MULTI MONITOR SYSTEM
7-SEGMENT MONITOR SYSTEM
SENSOR

TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
TESTING AND ADJUSTING
TOOLS FOR TESTING, ADJUSTING AND TROUBLESHOOTING
INSPECTION AND ADJUSTMENT OF ENGINE RPM
MEASUREMENT OF EXHAUST GAS COLOR
ADJUSTMENT OF VALVE CLEARANCE
MEASUREMENT OF COMPRESSION PRESSURE
MEASUREMENT OF BLOW-BY PRESSURE
INSPECTION AND ADJUSTMENT OF FUEL INJECTION TIMING
MEASUREMENT OF ENGINE OIL PRESSURE
ADJUSTMENT OF ENGINE SPEED SENSOR
INSPECTION AND ADJUSTMENT OF AIR COMPRESSOR BELT TENSION
EMERGENT ESCAPE FROM FAILURE IN ENGINE CONTROL SYSTEM
MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS
INSPECTION AND ADJUSTMENT OF TRACK SHOE TENSION
INSPECTION AND ADJUSTMENT OF HYDRAULIC OIL PRESSURE IN HYDRAULIC CIRCUIT FOR WORK EQUIPMENT,SWING AND TRAVEL
INSPECTION AND ADJUSTMENT OF CONTROL CIRCUIT OIL PRESSURE
INSPECTION AND ADJUSTMENT OF PUMP PC CONTROL CIRCUIT OIL PRESSURE
INSPECTION AND ADJUSTMENT OF PUMP LS CONTROL CIRCUIT OIL PRESSURE
MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE
MEASUREMENT OF PPC VALVE OUTPUT PRESSURE
ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE
INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT
RELEASE OF REMAINING PRESSURE IN HYDRAULIC CIRCUIT
MEASUREMENT OF OIL LEAKAGE AMOUNT
AIR BLEEDING OF VARIOUS PARTS
INSPECTION PROCEDURES FOR DIODE
SPECIAL FUNCTION OF MULTI-MONITOR PANEL
SPECIAL FUNCTIONS OF 7-SEGMENTS MONITOR PANEL
PREPARATIONS FOR TROUBLESHOOTING ELECTRICAL SYSTEM
PM-TUNE UP SERVICE

TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
CHECKS BEFORE TROUBLESHOOTING
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
CONNECTOR LOCATION CHART AND ELECTRICAL CIRCUIT DIAGRAM BY SYSTEM
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
TROUBLESHOOTING WHEN SERVICE CODE"ELECTRICAL SYSTEM"AND FAILURE CODE"MECHANICAL SYSTEM"ARE INDICATED
TROUBLESHOOTING OF ELECTRICAL SYSTEM(E-MODE)
TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM(H-MODE)
TROUBLESHOOTING OF ENGINE(S-MODE)

DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
PRECAUTIONS WHEN PERFORMING OPERATION
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARTING MOTOR ASSEMBLY
FUEL INJECTION PUMP ASSEMBLY
ENGINE FRONT SEAL
ENGINE REAR SEAL
CYLINDER HEAD ASSEMBLY
RADIATOR ASSEMBLY
HYDRAULIC OIL COOLER ASSEMBLY
ENGINE AND HYDRAULIC PUMP ASSEMBLIES
FINAL DRIVE ASSEMBLY
SWING MOTOR AND SWING MACHINERY ASSEMBLY
CARRIER ROLLER ASSEMBLY
TRACK ROLLER ASSEMBLY
IDLER ASSEMBLY
RECOIL SPRING ASSEMBLY
SPROCKET
TRACK SHOE ASSEMBLY
SWING CIRCLE ASSEMBLY
REVOLVING FRAME ASSEMBLY
CENTER SWIVEL JOINT ASSEMBLY
HYDRAULIC TANK ASSEMBLY
CONTROL VALVE ASSEMBLY
HYDRAULIC PUMP ASSEMBLY
OIL SEAL IN HYDRAULIC PUMP INPUT SHAFT
WORK EQUIPMENT PPC VALVE ASSEMBLY
TRAVEL PPC VALVE ASSEMBLY
HYDRAULIC CYLINDER ASSEMBLY
EQUIPMENT ASSEMBLY
AIR CONDITIONER UNIT ASSEMBLY
COUNTERWEIGHT ASSEMBLY
OPERATOR'S CAB ASSEMBLY
OPERATOR'S CAB CLASS(STUCK GLASS)
FRONT WINDOW ASSEMBLY
MONITOR ASSEMBLY
GOVERNOR, PUMP CONTROLLER ASSEMBLY

OTHERS
HYDRAULIC CIRCUIT DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM
ELECTRICAL CIRCUIT DIAGRAM FOR AIR CONDITIONER

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