Komatsu WA1200-3 and WA1200-3-A 4WD Wheeled Loaders (Japan) Workshop Manual (SEBM018225)

Illustrated factory Workshop Manual for Komatsu 4WD Wheeled Loaders Models WA1200-3 and WA1200-3-A.

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):
   WA1200-3 (SN: 50001-)
   WA1200-3-A (SN: 50001-)

Format: PDF, 2398 pages
Language: English
Table of Contents:
   GENERAL
      GENERAL ASSEMBLY DRAWING
      SPECIFICATIONS
      WEIGHT TABLE
      LIST OF LUBRICANT AND WATER
   STRUCTURE AND FUNCTION
      OUTLINE
      TADIATOR AND HYDRAULIC OIL COOLER
      DAMPER
      TORQUE CONVERTER AND TRANSMISSION PIPING
      TORQUE CONVERTER
      MAIN RELIEF VALVE AND TORQUE CONVERTER RELIEF VALVE
      TORQUE CONVERTER REGULATOR VALVE
      ECMV
      TRANSMISSION
      TRANSMISSION CONTROL VALVE
      LUBRICATING OIL RELIEF VALVE
      TRANSFER
      TORQUE CONVERTER OIL COOLER
      CENTER SUPPORT
      AXLE
      FINAL DRIVE
      AXLE MOUNT
      CENTER HINGE PIN
      JACK-UP POINT
      ARRANGEMENT OF STEERING EQUIPMENT
      AJSS (ADVANCED JOYSTICK STEERING SYSTEM)
      STEERING PUMP
      SWITCH PUMP
      SERVO VALVE
      STEERING DEMAND VALVE
      ROTARY VALVE
      EPC VALVE
      DIVERTER VALVE
      ARRANGEMENT OF BRAKE EQUIPMENT
      BRAKE VALVE
      HARGE VALVE
      ACCUMULATOR (FOR BRAKE)
      SLACK ADJUSTER
      BRAKE
      PARKING BRAKE
      PARKING BRAKE OIL CIRCUIT CHECK VALVE ASSEMBLY
      ARRANGEMENT OF HYDRAULIC EQUIPMENT
      WORK EQUIPMENT LEVER LINKAGE
      HYDRAULIC TANK
      WORK EQUIPMENT PUMP NO.1
      WORK EQUIPMENT PUMP NO.2
      WORK EQUIPMENT PUMP NEUTRAL CUT VALVE (NC VALVE)
      PPC VALVE (PROPORTIONAL PRESSURE VALVE)
      PPC RELIEF VALVE
      ACCUMULATOR(FOR PPC VALVE)
      MAIN CONTROL VALVE
      WORK EQUIPMENT LINKAGE
      OPERATION OF PROXIMITY SWITCH
      AIR CONDITIONER
      MACHINE MONITOR SYSTEM
      MAIN MONITOR
      CGC MONITOR
      MULTI MONITOR
      ALL-RANGE ELECTRONIC CONTROL AUTOMATIC TRANSMISSION (ATM) SYSTEM
      MODULATED CLUTCH (MOD/C) CONTROL SYSTEM
      WORK EQUIPMENT AND JOYSTICK STEERING CONTROL SYSTEM
      WORK EQUIPMENT AND JOYSTICK STEERING CONTROLLER
      ENGINE STARTING CIRCUIT
      ENGINE STOPPING CIRCUIT
      ETHER INJECTION CIRCUIT
      ELECTRIC PARKING BRAKE CONTROL
      PARKING BRAKE SOLENOID VALVE
      EMERGENCY PARKING BRAKE RESET SOLENOID VALVE
      KICK-DOWN SWITCH AND AUTO SHIFT/MANUAL SHIFT SELECTOR SWITCH
      BATTERY DISCONNECTOR SWITCH
      EMERGENCY ENGINE STOP SWITCH (FOR RIO TINTO)
      HYDRAULIC OIL LEVEL CAUTION DISPLAY (FOR RIO TINTO)
   TESTING AND ADJUSTING
      STANDARD VALUE TABLE
      TESTING AND ADJUSTING
      TROUBLESHOOTING
   DISASSEMBLY AND ASSEMBLY
      How to read this manual
      Coating materials list
      Special tool list
      Sketches of special tools
      Procedure for flushing work equipment and steering hydraulic circuit
      Procedure for flushing brake hydraulic circuit
      Bleeding air from piston pump
      Bleeding air from work equipment circuit and steering circuit
      Bleeding air from brake circuit
      Removal and installation of DT connector pin
      Removal and installation of HD connector pin
      Repair procedure of HD connector pin harness
      Removal and installation of engine assembly
      Removal and installation of damper assembly
      Disassembly and assembly of damper assembly
      Removal and installation of radiator and hydraulic oil cooler assembly
      Procedure for disassembly and assembly of MESABI oil cooler assembly
      Disassembly and assembly of MESABI oil cooler assembly
      Removal and installation of fuel cooler assembly
      Removal and installation of torque converter and transmission oil cooler assembly
      Removal and installation of bumper and fuel tank assembly
      Removal and installation of hood assembly
      Removal and installation of bulkhead assembly
      Disassembly and assembly of ECMV
      Removal and installation of torque converter and transmission assembly
      Disconnection and connection of transmission assembly and torque converter assembly
      Disconnection and connection of torque converter assembly and PTO • transfer assembly
      Disassembly and assembly of torque converter assembly
      Disassembly and assembly of modulated clutch assembly
      Disassembly and assembly of PTO and transfer assembly
      Disconnection and connection of transmission assembly and transfer • parking brake assembly
      Disassembly and assembly of transmission assembly
      Disassembly and assembly of transfer assembly
      Disassembly and assembly of parking brake assembly
      Removal and installation of parking brake assembly (from machine body)
      Disassembly and assembly of drive shaft assembly
      Removal and installation of front axle assembly
      Removal and installation of front final drive assembly
      Removal and installation of rear axle assembly
      Disconnection and connection of differential assembly
      Disassembly and assembly of differential assembly
      Removal and installation of rear final drive assembly
      Disassembly and assembly of final drive and brake assembly
      Removal and installation of center support assembly
      Disassembly and assembly of center support assembly
      Removal and installation of steering demand valve assembly
      Removal and installation of steering cylinder assembly
      Removal and installation of steering pump, control pump and PPC pump assembly
      Removal and installation of switching pump assembly
      Removal and installation of emergency diverter valve assembly
      Removal and installation of emergency steering pump assembly
      Removal and installation of brake accumulator charge valve assembly
      Removal and installation of brake oil cooler assembly
      Removal and installation of brake oil tank assembly
      Removal and installation of transmission, brake cooling and brake pump assembly
      Disconnecting procedure for front frame and rear frame
      Removal and installation of center hinge pin
      Removal and installation of work equipment control valve assembly
      Removal and installation of work equipment pump assembly (Right side)
      Removal and installation of work equipment pump assembly (Left side)
      Removal and installation of hydraulic tank and filter case assembly
      Removal and installation of bucket cylinder assembly
      Removal and installation of lift cylinder assembly
      Disassembly and assembly of hydraulic cylinder assembly
      Removal and installation of work equipment assembly
      Run-in procedure for bucket pin
      Run-in procedure for lift arm pin
      Removal and installation of air conditioner unit assembly
      Removal and installation of operator`s cab and floor assembly1
      Removal and installation of operator`s cab assembly
      Disassembly and assembly of operator`s seat assembly
      Removal and installation of controller assemblies
      SERVICE KIT PARTS LIST
   MAINTENANCE STANDARD
      ENGINE MOUNT
      TRANSMISSION MOUNT
      RADIATOR AND OIL COOLER
      DAMPER
      TORQUE CONVERTER, TRANSMISSION, BRAKE COOLING AND BRAKE PUMP
      INPUT TRANSFER. PTO
      MODULATED CLUTCH
      TORQUE CONVERTER
      TRANSMISSION
      TRANSFER
      MAINRELIEF, TORQUE CONVERTER RELIEF VALVE
      TORQUE CONVERTER REGULATOR VALVE
      BY-PASS FILL VALVE
      BY-PASS FILL VALVE AND BY-PASS DRAIN VALVE
      ECMV
      LUBRICATIONG OIL RELIEF VALVE
      DRIVE SHAFT
      CENTER SUPPORT
      DIFFERENTIAL
      FINAL DRIVE
      AXLE MOUNT
      CENTER HINGE PIN
      STEERING PUMP
      SWITCH PUMP
      STEERING DEMAND VALVE
      DIVERTER VALVE
      STEERING CYLINDER MOUNT
      EMERGENCY STEERING PUMP
      BRAKE VALVE
      SLACK ADJUSTER
      BRAKE
      PARDING BRAKE
      WORK EQUIPMENT PUMP NO.1
      WORK EQUIPMENT PUMP NO.2
      PPC VALVE
      PPC RELIEF VALVE
      PUMP CONTROL RELIEF VALVE
      MAIN CONTROL VALVE
      HYDRAULIC CYLINDER
      BUCKET POSITIONER AND REMOTE POSITIONER
      BUCKET LINKAGE
   OTHERS
      TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM
      BRAKE CIRCUIT DIAGRAM
      WORK EUIPMENT HYDRAULIC CIRCUIT DIAGRAM (1/2) Serial No. : 50001 - 50084
      WORK