Komatsu WA50-3 (SN from 21450) 4WD Wheeled Loaders (Japan) Workshop Manual (SEBM017803)

Illustrated factory Workshop Manual for Komatsu 4WD Wheeled Loaders Models WA50-3.

This manual will assist you in diagnosing, repairing, and adjusting for your 4wd wheeled loader.
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):
   WA50-3 (SN: 21450-)

Format: PDF, 396 pages
Language: English
Table of Contents:
   GENERAL
      GENERAL ASSEMBLY DRAWING
      SPECIFICATIONS
      WEIGHT TABLE
      LIST OF LUBRICANT AND WATER
   STRUCTURE AND FUNCTION
      POWER TRAIN
      POWER TRAIN SYSTEM
      RADIATOROIL COOLER
      HST PIPING
      HST HYDRAULIC CIRCUIT DIAGRAM
      MAIN PISTON PUMP
      HIGH-PRESSURE RELIEF VALVE
      LOW-PRESSURE RELIEF VALVE
      WORK EQUIPMENTSTEERING PUMP, HST CHARGE PUMP
      CHARGE PUMP OIL FILTER
      SPEED RELATED VALVE (DA VALVE)
      PISTON MOTOR
      DIRECTIONAL SHUTTLE VALVE
      SERVO VALVE
      INCHING VALVE
      TRANSFER
      HST CONTROL
      AXLE
      DIFFERENTIAL
      FINAL DRIVE
      AXLE MOUNT
      CENTER HINGE PIN
      TIREWHEEL
      STEERING PIPING
      STEERING COLUMN
      PRIORITY VALVE
      STEERING VALVE (ORBIT-ROLL)
      BRAKE, PARKING BRAKE CONTROL
      BRAKE (ALSO USED AS PARKING BRAKE)
      WORK EQUIPMENT PIPING
      WORK EQUIPMENT HYDRAULIC SYSTEM DIAGRAM
      WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM
      WORK EQUIPMENT LEVER LINKAGE
      HYDRAULIC TANK
      HYDRAULIC FILTER
      MAIN CONTROL VALVE
      WORK EQUIPMENT LINKAGE
      BUCKET
      BUCKET POSITIONER
      PROXIMITY SWITCH
      ROPS CANOPY
      CENTRAL PANEL (CLUSTER GAUGE)
      ENGINE START CIRCUIT
      ENGINE STOP CIRCUIT
      PREHEATING CIRCUIT
      PARKING BRAKE CIRCUIT
   TESTING AND ADJUSTING
      STANDARD VALUE TABLE FOR ENGINE
      STANDARD VALUE TABLE FOR CHASSIS
      TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
      ADJUSTING VALVE CLEARANCE
      MEASURING COMPRESSION PRESSURE
      TESTING AND ADJUSTING FUEL INJECTION TIMING
      BLEEDING AIR FROM FUEL CIRCUIT
      TESTING AND ADJUSTING FAN BELT TENSION
      TESTING FOR ABNORMALITY IN FUEL LEVEL SENSOR
      MEASURING ACCELERATOR PEDAL
      MEASURING OPERATING EFFORT, TRAVEL OF DIRECTIONAL LEVER
      MEASURING STALL SPEED
      MEASURING HST OIL PRESSURE
      TESTING AND ADJUSTING STEERING WHEEL
      MEASURING OPERATING TIME FOR STEERING WHEEL
      MEASURING STEERING PRESSURE
      TESTING AND ADJUSTING BRAKE PEDAL
      MEASURING OPERATION EFFORT, TRAVEL OF BRAKE PEDAL
      MEASURING BRAKE PERFORMANCE
      MEASURING PARKING BRAKE PERFORMANCE
      MEASURING BRAKE DISC WEAR
      TESTING AND ADJUSTING INCHING VALVE LINKAGE
      MEASURING AND ADJUSTING WORK EQUIPMENT CONTROL LEVER
      MEASURING TRAVEL OF MAIN CONTROL VALVE SPOOL
      MEASURING WORK EQUIPMENT PRESSURE
      TESTING AND ADJUSTING BUCKET POSITIONER
      TROUBLESHOOTING
   DISASSEMBLY AND ASSEMBLY
      HOW TO READ THIS MANUAL
      PRECAUTIONS WHEN CARRYING OUT OPERATION
      SPECIAL TOOLS LIST
      REMOVAL OF FUEL INJECTION PUMP ASSEMBLY
      INSTALLATION OF FUEL INJECTION PUMP ASSEMBLY
      REMOVAL OF ENGINE ASSEMBLY
      INSTALLATION OF ENGINE ASSEMBLY
      REMOVAL OF ENGINE ASSEMBLY
      INSTALLATION OF ENGINE ASSEMBLY
      REMOVAL OF RADIATOR
      INSTALLATION OF RADIATOR
      REMOVAL OF RADIATOR
      INSTALLATION OF RADIATOR
      REMOVAL OF FUEL TANK
      INSTALLATION OF FUEL TANK
      REMOVAL OF MAIN PISTON PUMP ASSEMBLY
      INSTALLATION OF MAIN PISTON PUMP ASSEMBLY
      DISASSEMBLY OF MAIN PISTON PUMP ASSEMBLY
      ASSEMBLY OF MAIN PISTON PUMP ASSEMBLY
      REMOVAL OF PISTON MOTOR ASSEMBLY
      INSTALLATION OF PISTON MOTOR ASSEMBLY
      DISASSEMBLY OF PISTON MOTOR ASSEMBLY
      ASSEMBLY OF PISTON MOTOR ASSEMBLY
      REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES
      INSTALLATION OF ENGINE AND TRANSFER ASSEMBLY
      REMOVAL OF ENGINE AND TRANSFER ASSEMBLIES
      INSTALLATION OF ENGINE AND TRANSFER ASSEMBLIES
      DISASSEMBLY OF TRANSFER
      ASSEMBLY OF TRANSFER ASSEMBLY
      DISASSEMBLY OF DRIVE SHAFT
      ASSEMBLY OF DRIVE SHAFT
      REMOVAL OF FRONT AXLE
      INSTALLATION OF FRONT AXLE
      REMOVAL OF REAR AXLE
      INSTALLATION OF REAR AXLE
      DISASSEMBLY OF DIFFERENTIALS
      ASSEMBLY OF DIFFERENTIAL
      DISASSEMBLY OF AXLE HOUSINGS
      ASSEMBLY OF AXLE HOUSING
      REMOVAL OF CENTER HINGE PIN
      INSTALLATION OF CENTER HINGE PIN
      REMOVAL OF STEERING VALVE
      INSTALLATION OF STEERING VALVE
      DISASSEMBLY OF STEERING VALVE
      DISASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE
      ASSEMBLY OF RELIEF VALVE HOUSING SIDE OF STEERING VALVE
      REMOVAL OF STEERING CYLINDER
      INSTALLATION OF STEERING CYLINDER
      REMOVAL OF PARKING BRAKE
      INSTALLATION OF PARKING BRAKE
      REMOVAL OF HYDRAULIC TANK
      INSTALLATION OF HYDRAULIC TANK
      REMOVAL OF WORK EQUIPMENT VALVE
      INSTALLATION OF WORK EQUIPMENT VALVE
      REMOVAL OF BUCKET CYLINDER
      INSTALLATION OF BUCKET CYLINDER
      REMOVAL OF BOOM CYLINDER
      INSTALLATION OF BOOM CYLINDER
      DISASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES
      ASSEMBLY OF HYDRAULIC CYLINDER ASSEMBLIES
      REMOVAL OF WORK EQUIPMENT
      INSTALLATION OF WORK EQUIPMENT
      REMOVAL OF COUNTERWEIGHT
      INSTALLATION OF COUNTERWEIGHT
      REMOVAL OF INSTRUMENTS PANEL
      INSTALLATION OF INSTRUMENTS PANEL
   MAINTENANCE STANDARD
      TRANSMISSIONENGINE MOUNT
      WORK EQUIPMENTSTEERING PUMP, HST CHARGE PUMP
      TRANSFER
      HST INCHING VALVE
      DRIVE SHAFT
      DIFFERENTIAL (1/2)
      DIFFERENTIAL (2/2)
      FINAL DRIVE
      AXLE MOUNT
      CENTER HINGE PIN
      STEERING COLUMN
      PRIORITY VALVE
      STEERING CYLINDER MOUNT
      BRAKE
      HYDRAULIC CYLINDER
      WORK EQUIPMENT LINKAGE
      BUCKET
      BUCKET POSITIONER
   OTHERS
      ELECTRIC CIRCUIT DIAGRAM