Komatsu Wheel Loader WA380-5L Shop Manual

COVER
FOREWORD
CONTENTS
SAFETY
GENERAL
HOW TO READ THE SHOP MANUAL
HOISTING INSTRUCTIONS
PUSH PULL COUPLER
COATING MATERIALS
STANDARD TIGHTENING TORQUE
ELECTRIC WIRE CODE
CONVERSION TABLES
01 GENERAL
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
GENERAL ASSEMBLY DRAWING
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
COOLING SYSTEM
ENGINE MOUNT, TRANSMISSION MOUNT
POWER TRAIN
POWER TRAIN SYSTEM DIAGRAM
DRIVE SHAFT (PROPELLER SHAFT)
TORQUE CONVERTER, TRANSMISSION PIPING
TORQUE CONVERTER
TRANSMISSION
TRANSMISSION CONTROL VALVE
AXLE
DIFFERENTIAL
FINAL DRIVE
AXLE MOUNTING, CENTER HINGE PIN
STEERING PIPING
STEERING COLUMN, ORBIT ROLL
STEERING VALVE
ORBIT-ROLL VALVE
STOP VALVE
STEERING PUMP, SWITCH PUMP
EMERGENCY STEERING PUMP
EMERGENCY STEERING MOTOR
STEERING CYLINDER
JOYSTICK STEERING
BRAKE PIPING
BRAKE VALVE
CHARGE VALVE
ACCUMULATOR – BRAKE
BRAKE
PARKING BRAKE CONTROL
PARKING BRAKE
HYDRAULIC PIPING
WORK EQUIPMENT CONTROL LEVER
HYDRAULIC TANK
TORQUE CONVERTER CHARGING, WORK EQUIPMENT, AND PILOT CONTROL PUMPS
PPC RELIEF VALVE
E.C.S.S. VALVE (If Equipped)
WORK EQUIPMENT CONTROL VALVE
WORK EQUIPMENT PPC VALVE
PPC VALVE (FOR MULTI FUNCTION MONO LEVER)
EPC SOLENOID VALVE (If equipped)
SHUT OFF VALVE (If equipped)
ATTACHMENT PPC VALVE (If equipped)
COOLING FAN MOTOR
COOLING FAN MOTOR DRIVE PUMP
WORK EQUIPMENT LINKAGE
BUCKET
BUCKET POSITIONER, BOOM KICK-OUT
WORK EQUIPMENT CYLINDER
CAB
AIR CONDITIONER
MACHINE MONITORING SYSTEM
MACHINE MONITOR
TRANSMISSION CONTROL SYSTEM
TRANSMISSION CONTROLLER
WORK EQUIPMENT CONTROL SYSTEM
WORK EQUIPMENT CONTROLLER
ELECTRIC TRANSMISSION CONTROL
KICK DOWN, HOLD SWITCH
ENGINE STARTING CIRCUIT
ENGINE STOP CIRCUIT
PREHEATING CIRCUIT
ENGINE POWER MODE SELECTOR CIRCUIT
PARKING BRAKE CIRCUIT
SENSORS
20 STANDARD VALUE TABLES
STANDARD SERVICE VALUE TABLE
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
30 TESTING AND ADJUSTING
ENGINE COMPONENTS
ADJUSTING ACCELERATOR PEDAL
ADJUSTING TRANSMISSION SPEED SENSOR
POWER TRAIN OIL PRESSURE
FLUSHING TORQUE CONVERTER, TRANSMISSION AND HYDRAULIC CIRCUIT
TRANSMISSION VALVE FAILS
STEERING CONTROL
STEERING OIL PRESSURE
TESTING HYDRAULIC FAN
BRAKE SYSTEM
ACCUMULATOR CHARGE PRESSURE
PPC OIL PRESSURE
WORK EQUIPMENT HYDRAULIC PRESSURE
BUCKET POSITIONER
BOOM KICK-OUT
PROXIMITY SWITCH ACTUATION
ADJUSTING MACHINE MONITOR
LOAD METER
BLEEDING AIR
RELEASING REMAINING PRESSURE
PM-CLINIC INSPECTION TABLE
40 TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
ELECTRIC WIRE CODE
CHECKS BEFORE TROUBLESHOOTING
SPECIAL FUNCTIONS OF MACHINE MONITOR
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
T-ADAPTER TABLE
CONNECTOR TYPES AND LOCATIONS
CONNECTOR LAYOUT DRAWING
TRANSMISSION CONTROL SYSTEM DIAGRAM
TRANSMISSION CONTROL SYSTEM (TM MODE)
WORK EQUIPMENT CONTROL SYSTEM (WRK MODE)
MONITOR SYSTEM (MON MODE)
HYDRAULIC AND MECHINCAL SYSTEMS (H MODE)
ELECTRICAL SYSTEM (E MODE)
ENGINE SYSTEM (S-MODE)
50 DISASSEMBLY AND ASSEMBLY
HOW TO READ THIS MANUAL
SPECIAL TOOLS LIST
CONNECTOR REPAIR PROCEDURES
BULKHEAD ASSEMBLY
ENGINE HOOD ASSEMBLY
ENGINE ASSEMBLY
ENGINE CYLINDER HEAD ASSEMBLY
RADIATOR FAN MOTOR
AFTERCOOLER
FUEL INJECTION PUMP
NOZZLE HOLDER
FAN AND FAN MOTOR
FUEL TANK
PARKING BRAKE DISCS AND PLATES
TORQUE CONVERTER AND TRANSMISSION
TRANSMISSION ASSEMBLY
TRANSMISSION CLUTCH PACK
PARKING BRAKE
TORQUE CONVERTER (STANDARD)
TORQUE CONVERTER (LOCK-UP)
REAR AXLE
FRONT AXLE
AXLE HOUSING
DIFFERENTIAL
CENTER HINGE PIN
CAB ASSEMBLY
CAB AND FLOOR FRAME
OPERATOR’S CAB GLASS (SEALED GLASS)
HYDRAULIC PUMP ASSEMBLY
STEERING DEMAND VALVE ASSEMBLY
ORBITROL VALVE
ECSS VALVE
WORK EQUIPMENT VALVE
HYDRAULIC CYLINDERS
HYDRAULIC TANK ASSEMBLY
WORK EQUIPMENT
COUNTERWEIGHT
AIR CONDITIONER ASSEMBLY
AIR CONDITIONER COMPRESSOR
OPERATOR’S SEAT ASSEMBLY
90 OTHERS
POWER TRAIN OIL CIRCUIT DIAGRAM
BRAKE OIL CIRCUIT DIAGRAM
HYDRAULIC CIRCUIT SCHEMATIC
ELECTRICAL SCHEMATIC