Komatsu WA65-5 (SN:H50051-), WA70-5 (SN:H50051-) and WA80-5 (SN:H50051-) 4WD Wheeled Loaders Workshop Manual (VEBM250100)

Illustrated factory Workshop Manual for Komatsu 4WD Wheeled Loaders Models WA65-5, WA70-5 and WA80-5.

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:
   WA65-5 (SN: H50051-)
   WA70-5 (SN: H50051-)
   WA80-5 (SN: H50051-)

Format: PDF, 306 pages
Language: English
Table of Contents:
   VEBM250100_WA65-5_WA80-5_Shop_Manual
   SAFETY
      Safety notice
      Foreword
      How to read the shop manual
      Hoisting instructions
   GENERAL
      Dimensions, weights and operating data WA65-5
      Specifications WA65-5
      Weight table WA65-5
      Dimensions, weights and operating data WA70-5
      Specifications WA70-5
      Weight table WA70-5
      Dimensions, weights and operating data WA80-5
      Specifications WA80-5
      Weight table WA80-5
      Lubricants and operating mediums: WA65-5/ WA70-5
      Lubricants and operating mediums: WA80-5
      Basic procedures of maintenance
      Torque list - screws and nuts
   STRUCTURE AND FUNCTION
      Powertrain
      Closed circuit
      Hydraulic drive system 20Km/h
      Hydraulic drive system 30Km/h
      Variable displacement pump
      Variable displacement motor
      Drive shaft
      Axle mounting - front axle
      Axle mounting - rear axle
      WA65-5 / WA70-5: Front axle
      WA80-5: Front axle
      Rear axle with transfer box
      Transfer box TB172
      Limited slip differential (locking value 25%)
      Locking differential (locking value 100%)
      Wheel hub, front and rear axle
      WA65-5 / WA70-5: Service and parking brake, front axle
      WA80-5: Service brake, front axle
      WA80-5: Parking brake, front axle
      Sevice and parking brake circuit
      WA65-5 / WA70-5: Service brake assembly
      WA80-5: Service brake assembly
      Inch-brake Valve
      Steering articulation joint
      Steering system
      Work equipment hydraulic WA65/WA70-5
      Work equipment hydraulic WA80-5
      PPC-Valve
      Main control valve
      WA65-5 / WA70-5: Lift cylinder
      WA80-5: Lift cylinder
      Dump cylinder
      Steering cylinder
      Lifting frame with quick-coupler
      Quick-coupler
      Monitor display
      Sensors
      Ribbon heater
      Engine stop / start / preheating circuit
      Electrical fuses and relays
      Electrical diagrams
      Air conditioner (option)
   TESTING AND ADJUSTING
      Standard value table for engine - WA65-5 / WA70-5 / WA80-5
      Standard value table for chassis - WA65-5
      Standard value table for chassis - WA70-5
      Standard value table for chassis - WA80-5
      Standard value table for electrical parts
      Test certificate - WA65-5
      Test certificate - WA70-5
      Test certificate - WA80-5
      Valve lash clearance
      Engine compression test
      Injection nozzle pressure
      Fuel injection timing
      V-belt tension
      Engine RPM
      RPM-dependant drive take-up
      Engine stall torque RPM
      Feed pump (and servo oil pressure for WA80-5)
      Hydraulic pressure cut-off
      Working hydraulic pressure
      Steering oil pressure
      Operating time for steering wheel
      Operating force of steering wheel
      Disc brake (foot brake WA80-5)
      Brake (WA65-5 and WA70-5)
      Inch valve - basic adjustment
      Brake efficiency
      Parking brake efficiency
      Travel speed
   DISASSEMBLY AND ASSEMBLY
      Comments
      Starter assembly
      Alternator assembly
      Water pump assembly
      Engine cover assembly
      Engine cover support assembly
      Engine assembly
      Clutch assembly
      Radiator assembly
      Fan assembly
      Inch brake valve assembly
      Priority valve assembly
      Orbit-roll-valve assembly
      Counterweight assembly
      Control valve assembly (WA65-5 / WA70-5)
      Main control valve assembly (WA80-5)
      Pilot valve assembly (WA80-5)
      Monitor assembly
      Articulated joint assembly
      Variable motor assembly
      Rear axle assembly
      Front axle assembly
      Front axle
      Brake caliper
      Rear axle
      Variable displacement pump assembly
      Hydraulic pump assemblies
      Quick-attach coupler assembly
      Steering cylinder assembly
      Lift cylinder assembly
      Dump cylinder assembly
      Replacing windows in driver’s cab
   OTHERS
      Wiring diagram1/5
      Wiring diagram 2/5
      Wiring diagram 3/5
      Wiring diagram 4/5
      Wiring diagram 5/5
      Wiring diagram, Speed control
      Wiring diagram, Immobilizer
      Hydraulic circuit diagram 1/4
      Hydraulic circuit diagram 2/4
      Hydraulic circuit diagram 3/4
      Hydraulic circuit diagram 4/4