Description
Komatsu PW140-7 Hydraulic Excavator Shop Manual (SAA4D107E-1 Engine)
Komatsu PW140-7 Hydraulic Excavator Index:
VEBM410100 PW140-7
SAFETY
HOW TO READ THE SHOP MANUAL
HOISTING INSTRUCTIONS
COATING MATERIALS
STANDARD TIGHTENING TORQUE
ELECTRIC WIRE CODE
CONVERSION TABLES
UNITS
SAFETY NOTICE
01 GENERAL
WORKING RANGES
SPECIFICATION DIMENSION DRAWINGS
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
10 STRUCTURE, FUNCTION AND MAINTENANCE
ENGINE RELATED PARTS
RADIATOR . OIL COOLER . CHARGE AIR COOLER
POWER TRAIN
SWING CIRCLE
SWING MACHINERY & MOTOR
UNDERCARRIAGE
TRANSMISSION
TRAVEL MOTOR
CLUTCH CONTROL CIRCUIT
AXLE
SUSPENSION LOCK CYLINDER
BRAKING SYSTEM
BRAKE/STEER PUMP
PRIORITY VALVE
POWER BRAKE VALVE
ACCUMULATOR FOR BRAKE VALVE
STEERING SYSTEM
STEERING COLUMN
ORBITROL VALVE
HYDRAULIC EQUIPMENT LAYOUT DRAWINGS
HYDRAULIC CIRCUIT DIAGRAM
HYDRAULIC TANK
HYDRAULIC PUMP
PILOT PRESSURE CONTROL (PPC) SYSTEM
CONTROL VALVE
CLSS
CENTRE SWIVEL JOINT
TRAVEL PPC PEDAL
WORK EQUIPMENT . SWING PPC VALVE
SOLENOID VALVE BLOCK
BOOM SAFETY VALVE
HYDRAULIC CYLINDER
OUTRIGGER CYLINDER
DOZER CYLINDER
WORK EQUIPMENT
AIR CONDITIONER
ELECTRICAL WIRING DIAGRAM
ELECTRICAL SYSTEM
ELECTRONIC CONTROL SYSTEM
MACHINE MONITOR SYSTEM
OVERLOAD WARNING DEVICE
SENSOR
1st ATTACHMENT CIRCUIT HYDRAULIC PERFORMANCE (MAIN VALVE BYPASSED)
TRAVEL SYSTEM
STEERING SYSTEM
SERVICE BRAKE AND SUSPENSION SYSTEM
20 TESTING AND ADJUSTING
MEASURING ENGINE SPEED
MEASURING INTAKE AIR PRESSURE (BOOST PRESSURE)
CHECKING EXHAUST GAS COLOUR
ADJUSTING VALVE CLEARANCE
MEASURMENT OF COMPRESSION PRESSURE
MEASURING BLOW-BY PRESSURE
MEASURING ENGINE OIL PRESSURE
HANDLING FUEL SYSTEM PARTS
RELEASING RESIDUAL PRESSURE FROM FUEL SYSTEM
MEASURING FUEL PRESSURE
MEASURING FUEL RETURN RATE AND LEAKAGE
BLEEDING AIR FROM FUEL CIRCUIT
CHECKING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION
REPLACING THE FAN BELT
MEASUREMENT OF CLEARANCE IN SWING CIRCLE BEARINGS
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 (VALVE INLET) CONTROL OIL PRESSURE
MEASUREMENT OF SOLENOID VALVE OUTPUT PRESSURE
INSPECTION AND ADJUSTMENT OF PUMP LS VALVE CONTROL OIL PRESSURE
MEASUREMENT OF PPC VALVE OUTPUT PRESSURE
ADJUSTMENT OF WORK EQUIPMENT AND SWING PPC VALVE
TESTING TRAVEL MOTOR RELIEF PRESSURE
ADJUSTING TRAVEL MOTOR RELIEF PRESSURE
TESTING PROPSHAFT SPEED
TESTING TRANSMISSION CLUTCH CONTROL CIRCUIT
INSPECTION OF LOCATIONS OF HYDRAULIC DRIFT OF WORK EQUIPMENT
RELEASE OF REMAINING PRESSURE IN HYDRAULIC CIRCUIT
MEASUREMENT OF OIL LEAKAGE
AIR BLEEDING OF VARIOUS PARTS
INSPECTION PROCEDURES FOR DIODE
SPECIAL FUNCTION OF MONITOR PANEL
PREPARATIONS FOR TROUBLESHOOTING ELECTRICAL SYSTEM
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
INFORMATION CONTAINED IN TROUBLESHOOTING TABLE
STANDARD VALUE TABLE FOR CHASSIS RELATED PARTS
TROUBLESHOOTING OF ELECTRICAL SYSTEM (Error checking of items without Monitor codes)
STANDARD VALUE TABLE FOR ENGINE RELATED PARTS
30 DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
90 OTHER
HYDRAULIC CIRCUIT DIAGRAM (1/3)
HYDRAULIC CIRCUIT DIAGRAM (2/3)
HYDRAULIC CIRCUIT DIAGRAM (3/3)
ELECTRICAL CIRCUIT DIAGRAM (1/3)
ELECTRICAL CIRCUIT DIAGRAM (2/3)
ELECTRICAL CIRCUIT DIAGRAM (3/3)
