Komatsu Wheel Loader WA120-3MC Avance Plus service & repair manual

Description Komatsu Wheel Loader WA120-3MC Avance Plus service & repair manual

Komatsu Wheel Loader WA120-3MC Avance Plus pdf workshop service repair manual + operation & maintenance manual

Serial number A31001 and up

MANUAL CONTENT:
GENERAL
SPECIFICATION DRAWING
SPECIFICATIONS
WEIGHT TABLE
LIST OF LUBRICANT AND WATER
ENGINE OIL SPECIFICATIONS
NORMAL OPERATION
ARCTIC OPERATION
DIESEL FUEL SPECIFICATIONS
COOLANT SPECIFICATIONS
GENERAL
WATER
ANTIFREEZE
INHIBITORS/CONDITIONERS

STRUCTURE AND FUNCTION
POWER TRAIN
POWER TRAIN SYSTEM
TORQUE CONVERTER, TRANSMISSION PIPING
TRANSMISSION HYDRAULIC SYSTEM DIAGRAM
ENGINE LOW IDLING, DIRECTIONAL LEVER AT NEUTRAL, SPEED LEVER AT 2ND
TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM
ENGINE STOPPED
TORQUE CONVERTER
TORQUE CONVERTER OIL FILTER
TRANSMISSION
CLUTCH
REVERSE 1ST CLUTCH
FORWARD, 2ND CLUTCH
3RD, 4TH CLUTCH
FORWARD 1ST
FORWARD 2ND
FORWARD 3RD
FORWARD 4TH
REVERSE 1ST
TRANSMISSION CONTROL VALVE
UPPER VALVE
LOWER VALVE
TRANSMISSION SOLENOID VALVE
TORQUE CONVERTER OUTLET PORT VALVE
PILOT REDUCING VALVE
TRANSMISSION SOLENOID VALVE
PRIORITY VALVE
MAIN REGULATOR VALVE
QUICK RETURN VALVE
MODULATION FILL VALVE
DIRECTIONAL SELECTOR SPOOL
EMERGENCY MANUAL SPOOL
OPERATION OF FORWARD 1ST
ACCUMULATOR VALVE
TRANSMISSION CONTROL
DRIVE SHAFT
AXLE
FRONT AXLE
FRONT DIFFERENTIAL
REAR AXLE
REAR DIFFERENTIAL
TORQUE PROPORTIONING DIFFERENTIAL
FINAL DRIVE
AXLE MOUNT
CENTER HINGE PIN
STEERING PIPING
STEERING COLUMN
PRIORITY VALVE
STEERING VALVE (ORBIT-ROLL)
CONNECTION BETWEEN HAND PUMP AND SLEEVE
BRAKE
BRAKE PIPING
BRAKE CONTROL
BRAKE BOOSTER
BRAKE
PARKING BRAKE CONTROL
PARKING BRAKE
HYDRAULIC
HYDRAULIC PIPING
WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM
ENGINE LOW IDLING, WORK EQUIPMENT IN "HOLD"
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM
HYDRAULIC TANK
OIL FILTER BYPASS VALVE
BREATHER
PPC VALVE
PPC RELIEF VALVE
ACCUMULATOR
FOR PPC VALVE
MAIN CONTROL VALVE
RELIEF VALVE
SAFETY VALVE (WITH SUCTION)
SUCTION VALVE
BOOM AND BUCKET SPOOL AT NEUTRAL POSITION
BOOM SPOOL AT RAISE POSITION
BOOM SPOOL AT LOWER POSITION
BOOM SPOOL AT FLOAT POSITION
BUCKET SPOOL AT TILT BACK POSITION
BUCKET SPOOL AT DUMP POSITION
WORK EQUIPMENT
WORK EQUIPMENT LEVER LINKAGE
WORK EQUIPMENT LINKAGE
BUCKET
BUCKET POSITIONER AND BOOM KICK-OUT
BUCKET POSITIONER
BOOM KICK-OUT
PROXIMITY SWITCH
ROPS CAB
AIR CONDITIONER
AIR CONDITIONER AND HEATER PIPING
AIR CONDITIONER AND HEATER ELECTRICAL DIAGRAM
ECSS (ELECTRONIC CONTROLLED SUSPENSION SYSTEM)
ECSS HYDRAULIC AND ELECTRICAL CIRCUIT DIAGRAM
CENTRAL PANEL
SENSORS
ENGINE OIL PRESSURE
BRAKE OIL LEVEL
ENGINE SPEED SENSOR
ENGINE
ENGINE STARTING CIRCUIT
ENGINE STOP CIRCUIT
AUTOMATIC PREHEATING CIRCUIT
QUICK HEATING SYSTEM (QHS)
QHS CONTROLLER
HEATER RELAY
RIBBON HEATER
QHS WATER TEMPERATURE SENSOR
TRANSMISSION AUTO-SHIFT CONTROL
TRANSMISSION AUTO-SHIFT CONTROL SYSTEM
SHIFT CONTROL SYSTEM FUNCTION
INPUT SIGNALS
OUTPUT SIGNALS
SHIFT CHARACTERISTICS
SAFETY FUNCTION
TROUBLESHOOTING
TRANSMISSION CONTROLLER
CONNECTOR SIGNALS
COMBINATION SWITCH
TRANSMISSION CUT-OFF FUNCTION
PARKING BRAKE FUNCTION
KICK-DOWN SWITCH
KICK-DOWN ELECTRICAL CIRCUIT
KICK-DOWN SWITCH OPERATED
KICK-DOWN SWITCH ACTUATION - CANCELED
ELECTRICAL WIRING ILLUSTRATION
ELECTRICAL WIRING DIAGRAM

TESTING, ADJUSTING AND TROUBLESHOOTING
STANDARD VALUE TABLE
ENGINE TABLE - IN CHASSIS
CHASSIS TABLE
SERVICE TOOLS TABLE
ENGINE COMPONENTS
ADJUSTING ENGINE STOP MOTOR CABLE
ADJUSTING ENGINE STOP SOLENOID
MEASURING AND ADJUSTING VALVE CLEARANCE
MEASURING BLOW-BY PRESSURE
MEASURING COMPRESSION PRESSURE
MEASURING COOLANT TEMPERATURE
MEASURING ENGINE LUBRICATING OIL PRESSURE
MEASURING ENGINE SPEEDS
MEASURING EXHAUST COLOR
MEASURING EXHAUST GAS TEMPERATURE
MEASURING FUEL FILTER INLET RESTRICTION
TEST AND ADJUSTING FAN BELT TENSION
TEST AND ADJUSTING FUEL INJECTION TIMING
ACCELERATOR PEDAL
OPERATING FORCE
OPERATING ANGLE
SPEED LEVER
OPERATING FORCE
TRAVEL
STALL SPEEDS
TORQUE CONVERTER STALL SPEED
HYDRAULIC STALL SPEED
FULL STALL SPEED
TORQUE CONVERTER OIL PRESSURE
TRANSMISSION OIL PRESSURE
EMERGENCY MANUAL SPOOL
OPERATION
STEERING WHEEL
PLAY
OPERATING FORCE
OPERATING TIME
STEERING OIL PRESSURE
METHOD OF MEASURING MAIN RELIEF PRESSURE
METHOD OF ADJUSTING MAIN RELIEF PRESSURE
BRAKE
BRAKE PEDAL
OPERATING FORCE
TRAVEL
BRAKE PEDAL LINKAGE
BRAKE PERFORMANCE
BRAKE OIL PRESSURE
BRAKE DISC WEAR
BLEEDING AIR
PARKING BRAKE
PARKING BRAKE PERFORMANCE
PARKING BRAKE LINKAGE
DISC WEAR  
MEASURING
WORK EQUIPMENT
CONTROL LEVER
PPC VALVE
MEASURING PRESSURE
WORK EQUIPMENT HYDRAULIC PRESSURE
WORK EQUIPMENT MEASUREMENT
HYDRAULIC DRIFT WORK EQUIPMENT
BUCKET POSITIONER
BOOM KICK-OUT (IF EQUIPPED)
PROXIMITY SWITCH ACTUATION PILOT LAMP (RED)
TROUBLESHOOTING GENERAL
ELECTRICAL CONNECTORS
TROUBLESHOOTING SYSTEMS OF:
A MODE - TRANSMISSION CONTROLLER SYSTEM
D MODE - ECSS (ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM)
E MODE - ELECTRICAL SYSTEM
S MODE - ENGINE
T MODE - HYDRAULIC AND MECHANICAL
AIR CONDITIONER

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS DURING OPERATION
PRECAUTIONS WHEN CARRYING OUT REMOVAL WORK
PRECAUTIONS WHEN CARRYING OUT INSTALLATION WORK
PRECAUTIONS WHEN COMPLETING THE OPERATIONS
OTHER PRECAUTIONS
SPECIAL TOOL LIST
ENGINE COMPONENTS
ALTERNATOR ASSEMBLY
CYLINDER HEAD ASSEMBLY
ENGINE OIL COOLER ASSEMBLY
FUEL INJECTION PUMP ASSEMBLY
NOZZLE HOLDER ASSEMBLY
STARTING MOTOR ASSEMBLY
THERMOSTAT ASSEMBLY
TURBOCHARGER ASSEMBLY
WATER PUMP ASSEMBLY
COVERS AND LADDER
ENGINE HOOD
RADIATOR
ENGINE
EXHAUST MUFFLER
AIR CLEANER
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER, TRANSMISSION
TORQUE CONVERTER
TRANSMISSION
DISASSEMBLY OF PARKING BRAKE
ASSEMBLY OF PARKING BRAKE
TRANSMISSION CLUTCH PACK
ST, REVERSE CLUTCH
FORWARD, 2ND CLUTCH PACK
3RD, 4TH CLUTCH PACK
ST, REVERSE CLUTCH
FORWARD, 2ND CLUTCH
3RD, 4TH CLUTCH
TRANSMISSION CONTROL VALVE
TRANSMISSION SOLENOID VALVE
TRANSMISSION ACCUMULATOR VALVE
DRIVE SHAFT
FRONT AXLE
REAR AXLE
DIFFERENTIAL
AXLE HOUSING
CENTER HINGE PIN
PRIORITY VALVE
STEERING VALVE
DISASSEMBLY OF ROTOR
DISASSEMBLY OF CONTROL SIDE
ASSEMBLY OF CONTROL SIDE
ASSEMBLY OF ROTOR
MAIN CONTROL VALVE
PPC VALVE TO MAIN CONTROL VALVE HYDRAULIC LINES
PPC VALVE
STEERING CYLINDER
BRAKE BOOSTER
PARKING BRAKE
HYDRAULIC TANK
HYDRAULIC FILTER
STEERING PUMP
BUCKET CYLINDER
BOOM CYLINDER
HYDRAULIC CYLINDER
ECSS SYSTEM
ECSS CIRCUIT - REMAINING PRESSURE REMOVAL
ECSS SOLENOID VALVE
ECSS CONTROL VALVE
WORK EQUIPMENT
FUEL TANK
COUNTERWEIGHT
REMOVAL OF LEFT AND RIGHT COUNTERWEIGHTS
INSTALLATION OF LEFT AND RIGHT COUNTERWEIGHTS
REMOVAL OF REAR COUNTERWEIGHT
INSTALLATION OF REAR COUNTERWEIGHT
INSTRUMENT PANEL
AIR CONDITIONING
AIR CONDITIONER UNIT
AIR CONDITIONER CONDENSER
DRYER RECEIVER
AIR CONDITIONER COMPRESSOR

MAINTENANCE STANDARD
ENGINE MOUNT, TRANSMISSION MOUNT
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER
TRANSMISSION
REVERSE, 1ST CLUTCH
FORWARD, 2ND CLUTCH
3RD, 4TH CLUTCH
TRANSMISSION CONTROL VALVE
UPPER VALVE
LOWER VALVE
SOLENOID VALVE
ACCUMULATOR VALVE
DRIVE SHAFT
DIFFERENTIAL
DIFERENTIAL
FINAL DRIVE
AXLE MOUNT
ADDITIONAL COUNTERWEIGHT
CENTER HINGE PIN
STEERING COLUMN
PRIORITY VALVE
STEERING CYLINDER MOUNT
BRAKE BOOSTER
BRAKE
PARKING BRAKE
HYDRAULIC PUMP
MAIN CONTROL VALVE
2-SPOOL VALVE
3-SPOOL VALVE
PPC VALVE
HYDRAULIC CYLINDER
WORK EQUIPMENT LINKAGE
BUCKET
BUCKET POSITIONER AND BOOM KICK-OUT

OTHERS
ELECTRICAL WIRING DIAGRAM

Engine S4D102E-1 workshop service repair manual