Komatsu Backhoe Loader WB70A-1 service & repair manual

Description Komatsu Backhoe Loader WB70A-1 service & repair manual

Komatsu Backhoe Loader WB70A-1 pdf workshop service & repair manual

Serial numbers:
F10001 and up
F10392 and up

Technical data, specifications, testing, adjusting, troubleshooting, maintenance, diagrams, schematics, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
STRUCTURE AND FUNCTION
P.T.O
Power train
Transmission
Axles
Hydrostatic transmission
Hydrostatic transmission pump
Inching valve
Travel motor
Steering system
Steering system pump
Steering unit
Priority valve
Frames knuckle and joint
Hydraulic circuit diagram
3-Spool control valve
Valves
Gear pump
Outrigger safely valves
Brake pump
Front equipment cylinder
Front work equipment
Loader control lever
Backhoe cylinder
Backhoe work equipment
Backhoe control lever
Solenoid valve
Electrical diagram

TESTING AND ADJUSTMENTS
Normal or standard technical data
Special tools
Measuring engine speed
Adjusting valve clearance
Measuring compression pressure
Testing and adjusting fuel injection timing
Checking and tightening the fan - belt
Measuring accelerator pedal operating force and accelerator lever
Adjusting inch pedal travel
Adjusting brake pedal travel
Testing frame articulation clearance
Air bleeding - releasing pressure
Checking and setting pressure in the attachments hydraulic circuit
Testing travel motor leakage
Adjusting transmission sensor
Testing priority valve operation
Testing and setting steering control system pressure
Testing steering cylinder leakage
Testing brake system
Adjusting parking brake lever
Brake disc clearance adjustment
Checking brake disks
Analysis of causes hydraulic

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS TO BE ТАКЕN WHILE WORKING
SPECIAL TOOLS
STARTER MOTOR
ALTERNATOR
INJECTION PUMP
NOZZLE HOLDER
CYLINDER HEAD
RADIATOR - OIL COOLER UNIT
MUFFLER
EXHAUST PIPE
SEAT AND ENGINE HOOD
SIDE COVER
HEATING RADIATOR
CAB
FUEL TANK
HYDRAULIC OIL TANK
ENGINE - PUMP GROUP
PISTON PUMP AND STEERING PUMP
ENGINE-PUMP COUPLING JOINT
TRAVEL MOTOR
STEERING PUMP
WORK EQUIPMENT PUMP
BRAKE PUMP
TRANSMISSION-REVERSE. DIRECTION INDICATOR AND HEADLIGHT DIPPER BEAM CONTROL GROUP
STEERING UNIT
PRIORITY VALVE
FRONT EQUIPMENT CONTROL VALVE
FRONT AXLE
REAR AXLE
AXLES
TRANSMISSION
FRAMES JOINT PIN
FRAMES JOINT
FRONT BUCKET LIFT ARM CYLINDERS
FRONT BUCKET DUMPING CYLINDERS
STEERING CYLINDERS
FRAME OSCILLATING LOCK CYLINDER
MACHINE CYLINDERS
FRAME OSCILLATING LOCK CYLINDER
FRONT BUCKET
TILT LEVER AND BUCKET LINK
ARM AND FRONT BUCKET LIFT
BACKHOE CONTROL VALVE
BACKHOE BOOM CYLINDER
BACKHOE ARM CYLINDER
BACKHOE BUCKET CYLINDER
BACKHOE SWING CYLINDERS
OUTRIGGER CYLINDERS
BACKHOE BACKFRAME LOCK CYLINDERS
BACKHOE CYLINDERS
BOOM SWING CYLINDER
BACKHOE EQUIPMENT
BACKHOE BUCKET
ARM
BACKHOE BOOM
BRACKET
BACKFRAME

MAINTENANCE STANDARD
P.T.O.
Transmission
Axles
Hydrostatic transmission pump
Steering pump
3-Spool control valve
6-Spool control valve
Brake pump
Outrigger safety valves
Front work equipment cylinders
Backhoe cylinders
Frame and joint
Backhoe frame
Front work equipment
Backframe and bracket
Backhoe work equipment

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