Komatsu WA470-8 Wheel Loader Service Manual (FEN03020-00)

FOREWORD ……………………………………………………………………………………………………………………………………………………………. 
FIG No. PAGE
ENGINE CYLINDER HEAD AND ITS RELATED PARTS
Cylinder Head …………………………………………………………………………………………………………………………..(X-)
A- 
Cylinder Head Cover …………………………………………………………………………………………………………………(X-)
A- 
Air Intake Manifold …………………………………………………………………………………………………………………….(X-)
A- 
Air Cleaner ………………………………………………………………………………………………………………………………(X-)
B- 
Exhaust Manifold ………………………………………………………………………………………………………………………(X-)
A- 
Komatsu Variable Geometry Turbocharger (KVGT) ………………………………………………………………………(X-)
Inner Parts …………………………………………………………………………………………………………………………A- 
Piping ……………………………………………………………………………………………………………………………….A- 
Water Pipe ………………………………………………………………………………………………………………………..A- 
EPC Piping ………………………………………………………………………………………………………………………..A- 
Komatsu Diesel Particulate Filter (KDPF) Piping …………………………………………………………………….A- 
Heat Shield ………………………………………………………………………………………………………………………………(X-)
A- 
Exhaust Gas Re-circulation (EGR) Valve …………………………………………………………………………………….(X-)
EGR Valve and Cooler Mounting ………………………………………………………………………………………….A- 
Inner Parts, EGR Oil Pump ………………………………………………………………………………………………….A- 
EGR Piping and Cooler ……………………………………………………………………………………………………….A- 
EGR Cooler Piping and Air Vent …………………………………………………………………………………………..A- 
EGR Valve Lubricating Oil Piping …………………………………………………………………………………………A- 
Komatsu Closed Crankcase Ventilation (KCCV) …………………………………………………………………………..(X-)
Breather and Hose ……………………………………………………………………………………………………………..A- 
Coolant Piping ……………………………………………………………………………………………………………………A- 
AdBlue/DEF Supply System ………………………………………………………………………………………………………(X-)
B- 
Komatsu Diesel Particulate Filter (KDPF) and SCR Assembly ………………………………………………………..(X-)
Komatsu Diesel Particulate Filter (KDPF) ………………………………………………………………………………B- 
Komatsu Diesel Particulate Filter (KDPF) Mounting ………………………………………………………………..B- 
SCR Assembly …………………………………………………………………………………………………………………..B- 
SCR Assembly Mounting …………………………………………………………………………………………………….B- 
AdBlue/DEF Mixing Tube …………………………………………………………………………………………………….B- 
ENGINE CYLINDER BLOCK AND ITS RELATED PARTS
Oil Pan and Suction Tube ………………………………………………………………………………………………………….(X-)
A- 
Camshaft Related Parts …………………………………………………………………………………………………………….(X-)
Camshaft and Cam Follower ……………………………………………………………………………………………….A- 
Rocker Arm and Housing …………………………………………………………………………………………………….A- 
Front Cover Accessory ………………………………………………………………………………………………………………(X-)
Mounting Bolt and Pointer ……………………………………………………………………………………………………A- 
Front Cover ……………………………………………………………………………………………………………………………..(X-)
A- 
Flywheel Housing ……………………………………………………………………………………………………………………..(X-)
A- 
Flywheel ………………………………………………………………………………………………………………………………….(X-)
A- 
Crank Pulley …………………………………………………………………………………………………………………………….(X-)
A- 

Cylinder Block ………………………………………………………………………………………………………………………….(X-)
A- 
Cylinder Block Accessory …………………………………………………………………………………………………………..(X-)
A- 
Crankshaft ……………………………………………………………………………………………………………………………….(X-)
A- 
Vibration Damper ……………………………………………………………………………………………………………………..(X-)
A- 
Piston and Connecting Rod ……………………………………………………………………………………………………….(X-)
A- 
Cam Follower Cover and Oil Filler ………………………………………………………………………………………………(X-)
A- 
Engine Front Support ………………………………………………………………………………………………………………..(X-)
A- 
Idler Gear ………………………………………………………………………………………………………………………………..(X-)
A- 
ENGINE LUBRICATION SYSTEM
Engine Oil Cooler Mounting ……………………………………………………………………………………………………….(X-)
A- 
Engine Oil Pump ………………………………………………………………………………………………………………………(X-)
A- 
Engine Oil Filter ………………………………………………………………………………………………………………………..(X-)
A- 
Piping ……………………………………………………………………………………………………………………………….A- 
Engine Oil Cooler ……………………………………………………………………………………………………………………..(X-)
A- 
ENGINE FUEL SYSTEM
Fuel Prefilter …………………………………………………………………………………………………………………………….(X-)
A- 
Piping ……………………………………………………………………………………………………………………………….A- 
Fuel Supply Pump …………………………………………………………………………………………………………………….(X-)
Inner Parts, Pump ………………………………………………………………………………………………………………A- 
Inner Parts, Feed Pump ………………………………………………………………………………………………………A- 
Pump Mounting ………………………………………………………………………………………………………………….A- 
Common Rail …………………………………………………………………………………………………………………….A- 
Piping ……………………………………………………………………………………………………………………………….A- 
Fuel Supply Pump Drive ……………………………………………………………………………………………………………(X-)
A- 
Fuel Injection Nozzle …………………………………………………………………………………………………………………(X-)
A- 
Fuel Return ………………………………………………………………………………………………………………………………(X-)
A- 
Fuel Filter ………………………………………………………………………………………………………………………………..(X-)
Fuel Filter and Piping ………………………………………………………………………………………………………….A- 
Priming Pump …………………………………………………………………………………………………………………….A- 
Priming Pump Piping ………………………………………………………………………………………………………….A- 
Timer Switch …………………………………………………………………………………………………………………………….(X-)
B- 
Fuel Supply Pump Bracket and Piping …………………………………………………………………………………………(X-)
Piping and Bracket ……………………………………………………………………………………………………………..A- 
Cover ………………………………………………………………………………………………………………………………..A- 
ENGINE COOLING SYSTEM
Cooling Fan ……………………………………………………………………………………………………………………………..(X-)
B- 
Water Pump Mounting and Air Vent …………………………………………………………………………………………….(X-)
A- 

Thermostat Housing ………………………………………………………………………………………………………………….(X-)
A- 
ENGINE ELECTRICAL SYSTEM
Alternator (Amp.) …………………………………………………………………………………………………………………..(X-)
Inner Parts …………………………………………………………………………………………………………………………A- 
Mounting Parts …………………………………………………………………………………………………………………..A- 
Starting Motor (KW) ………………………………………………………………………………………………………………(X-)
Inner Parts …………………………………………………………………………………………………………………………A- 
Mounting Parts …………………………………………………………………………………………………………………..A- 
Wiring Harness …………………………………………………………………………………………………………………………(X-)
(/) ………………………………………………………………………………………………………………………………….A- 
(/) ………………………………………………………………………………………………………………………………….A- 
(/) ………………………………………………………………………………………………………………………………….A- 
ENGINE ACCESSORIES AND OTHERS
Water Drain Valve …………………………………………………………………………………………………………………….(X-)
A- 
Engine Controller ………………………………………………………………………………………………………………………(X-)
A- 
ENGINE MARKS AND PLATES
Name Plate and Caution Plate ……………………………………………………………………………………………………(X-)
A- 
ENGINE RELATED PARTS
Engine Mounting ………………………………………………………………………………………………………………………(X-)
B- 
Engine Related Parts ………………………………………………………………………………………………………………..(X-)
Engine Wiring Harness (/) ………………………………………………………………………………………………..B- 
Engine Wiring Harness (/) ………………………………………………………………………………………………..B- 
Engine Wiring Harness Mounting …………………………………………………………………………………………B- 
Engine Wiring Harness (/) ………………………………………………………………………………………………..B- 
Air Cleaner Hose ………………………………………………………………………………………………………………..B- 
Wiring Harness Mounting …………………………………………………………………………………………………….B- 
Air Cleaner Cover ……………………………………………………………………………………………………………….B- 
Air Cleaner Mounting (/) …………………………………………………………………………………………………..B- 
Dust Indicator …………………………………………………………………………………………………………………….B- 
Air Cleaner Mounting (/) …………………………………………………………………………………………………..B- 
Priming Pump Switch ………………………………………………………………………………………………………….B- 
Exhaust Pipe ……………………………………………………………………………………………………………………………(X-)
Komatsu Diesel Particulate Filter (KDPF) and SCR Assembly Mounting (/) ……………………………B- 
Komatsu Diesel Particulate Filter (KDPF) and SCR Assembly Mounting (/) ……………………………B- 
Mounting and Piping …………………………………………………………………………………………………………..B- 
Exhaust Pipe ……………………………………………………………………………………………………………………..B- 
COOLING SYSTEM
Radiator …………………………………………………………………………………………………………………………………..(X-)
Radiator Core and Oil Cooler ……………………………………………………………………………………………….C- 
Oil Cooler Mounting ……………………………………………………………………………………………………………C- 
Sheet ………………………………………………………………………………………………………………………………..C- 
Fan Motor (/) ………………………………………………………………………………………………………………….C- 
Fan Motor (/) ………………………………………………………………………………………………………………….C- 
Fan Motor Related Parts (/) ……………………………………………………………………………………………..C- 
Fan Motor Related Parts (/) ……………………………………………………………………………………………..C- 
Fan Guard …………………………………………………………………………………………………………………………C- 
Sub-tank Piping (/) ………………………………………………………………………………………………………….C- 
Fan Motor Piping ………………………………………………………………………………………………………………..C- 
Condenser …………………………………………………………………………………………………………………………C- 
Breather, Fuel Tank ……………………………………………………………………………………………………………C- 
Piping (/) ………………………………………………………………………………………………………………………..C- 
Sub-tank Piping (/) ………………………………………………………………………………………………………….C- 

Torque Converter Oil Cooler Piping ………………………………………………………………………………………C- 
Sub-tank ……………………………………………………………………………………………………………………………C- 
Piping (/) ………………………………………………………………………………………………………………………..C- 
Piping (/) ………………………………………………………………………………………………………………………..C- 
Cooling Piping ………………………………………………………………………………………………………………………….(X-)
C- 
FUEL SYSTEM
Fuel Tank ………………………………………………………………………………………………………………………………..(X-)
Tank and Piping …………………………………………………………………………………………………………………D- 
Strainer ……………………………………………………………………………………………………………………………..D- 
Sensor ………………………………………………………………………………………………………………………………D- 
Mounting …………………………………………………………………………………………………………………………..D- 
Spill Hose Piping and Clamp ……………………………………………………………………………………………….D- 
AdBlue/DEF Tank ……………………………………………………………………………………………………………………..(X-)
D- 
AdBlue/DEF Piping ……………………………………………………………………………………………………………………(X-)
Piping (/) ………………………………………………………………………………………………………………………..D- 
Holder ……………………………………………………………………………………………………………………………….D- 
Piping (/) ………………………………………………………………………………………………………………………..D- 
Piping (/) ………………………………………………………………………………………………………………………..D- 
Piping (/) ………………………………………………………………………………………………………………………..D- 
Piping (/) ………………………………………………………………………………………………………………………..D- 
Piping Mounting …………………………………………………………………………………………………………………D- 
ELECTRICAL SYSTEM
Battery …………………………………………………………………………………………………………………………………….(X-)
E- 
Battery Box ………………………………………………………………………………………………………………………………(X-)
Cover, L.H. ………………………………………………………………………………………………………………………..E- 
Cover, R.H. ……………………………………………………………………………………………………………………….E- 
Holder ……………………………………………………………………………………………………………………………….E- 
Battery Cable …………………………………………………………………………………………………………………….E- 
Rear Combination Lamp ……………………………………………………………………………………………………..E- 
Disconnect Switch ………………………………………………………………………………………………………………E- 
Cover ………………………………………………………………………………………………………………………………..E- 
Bolt …………………………………………………………………………………………………………………………………..E- 
Front Wiring Harness ………………………………………………………………………………………………………………..(X-)
Wiring Harness and Senser …………………………………………………………………………………………………E- 
Wiring Harness Mounting …………………………………………………………………………………………………….E- 
Potentiometer …………………………………………………………………………………………………………………….E- 
Boom Wiring Harness …………………………………………………………………………………………………………E- 
Rear Wiring Harness (Without Secondary Steering, Automatic Control) …………………………………………..(X-)
Mounting (/) ……………………………………………………………………………………………………………………E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Battery Cable …………………………………………………………………………………………………………………….E- 
Wiring Harness and Switch ………………………………………………………………………………………………….E- 
Fuse …………………………………………………………………………………………………………………………………E- 
Alternator Cable …………………………………………………………………………………………………………………E- 
Ground Cable …………………………………………………………………………………………………………………….E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Clip …………………………………………………………………………………………………………………………………..E- 
Secondary Steering Wiring Harness ……………………………………………………………………………………..E- 
Rear Wiring Harness (With Secondary Steering, Automatic Control) ……………………………………………….(X-)
Mounting (/) ……………………………………………………………………………………………………………………E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 

Mounting (/) ……………………………………………………………………………………………………………………E- 
Battery Cable …………………………………………………………………………………………………………………….E- 
Wiring Harness and Switch ………………………………………………………………………………………………….E- 
Fuse …………………………………………………………………………………………………………………………………E- 
Alternator Cable …………………………………………………………………………………………………………………E- 
Ground Cable …………………………………………………………………………………………………………………….E- 
Mounting (/) ……………………………………………………………………………………………………………………E- 
Clip …………………………………………………………………………………………………………………………………..E- 
Secondary Steering Wiring Harness ……………………………………………………………………………………..E- 
Secondary Steering Cable …………………………………………………………………………………………………..E- 
Front Lamp ………………………………………………………………………………………………………………………………(X-)
L.H. …………………………………………………………………………………………………………………………………..E- 
R.H. ………………………………………………………………………………………………………………………………….E- 
Support Mounting ……………………………………………………………………………………………………………….E- 
Front Working Lamp ………………………………………………………………………………………………………………….(X-)
E- 
Horn ………………………………………………………………………………………………………………………………………..(X-)
E- 
POWER TRANSMITTING SYSTEM
Propeller Shaft ………………………………………………………………………………………………………………………….(X-)
Center ………………………………………………………………………………………………………………………………F- 
Front …………………………………………………………………………………………………………………………………F- 
Rear …………………………………………………………………………………………………………………………………F- 
Torque Converter and Transmission ……………………………………………………………………………………………(X-)
Pump and Turbine ……………………………………………………………………………………………………………..F- 
Forward and st Housing …………………………………………………………………………………………………….F- 
Reverse and nd Housing …………………………………………………………………………………………………..F- 
rd and th Housing ……………………………………………………………………………………………………………F- 
Transmission Case …………………………………………………………………………………………………………….F- 
Relief Valve ……………………………………………………………………………………………………………………….F- 
Transmission Control Valve Seat (/) ………………………………………………………………………………….F- 
ECMV Valve (/) ………………………………………………………………………………………………………………F- 
Filter …………………………………………………………………………………………………………………………………F- 
Transmission Control Valve Seat (/) ………………………………………………………………………………….F- 
ECMV Valve (/) ………………………………………………………………………………………………………………F- 
Filter and Piping …………………………………………………………………………………………………………………F- 
Gauge ………………………………………………………………………………………………………………………………F- 
Wiring Harness …………………………………………………………………………………………………………………..F- 
Input Shaft …………………………………………………………………………………………………………………………F- 
Output Shaft ………………………………………………………………………………………………………………………F- 
Coupling ……………………………………………………………………………………………………………………………F- 
Mounting …………………………………………………………………………………………………………………………..F- 
Breather ……………………………………………………………………………………………………………………………F- 
O-ring ……………………………………………………………………………………………………………………………….F- 
Oil Cooler Piping ………………………………………………………………………………………………………………..F- 
Piping Mounting …………………………………………………………………………………………………………………F- 
Clip …………………………………………………………………………………………………………………………………..F- 
Filler Tube …………………………………………………………………………………………………………………………F- 
Parking Brake Piping ………………………………………………………………………………………………………….F- 
Front Axle ………………………………………………………………………………………………………………………………..(X-)
Final Drive L.H. ………………………………………………………………………………………………………………….F- 
Final Drive R.H. ………………………………………………………………………………………………………………….F- 
Differential, Pinion and Cage ……………………………………………………………………………………………….F- 
Differential, Case and Housing …………………………………………………………………………………………….F- 
Differential, Cover and Carrier ……………………………………………………………………………………………..F- 
Brake ………………………………………………………………………………………………………………………………..F- 
Housing Mounting ………………………………………………………………………………………………………………F- 

Mounting …………………………………………………………………………………………………………………………..F- 
Rear Axle …………………………………………………………………………………………………………………………………(X-)
Final Drive L.H. ………………………………………………………………………………………………………………….F- 
Final Drive R.H. ………………………………………………………………………………………………………………….F- 
Differential, Pinion and Cage ……………………………………………………………………………………………….F- 
Differential, Case and Housing …………………………………………………………………………………………….F- 
Differential, Cover and Carrier ……………………………………………………………………………………………..F- 
Brake ………………………………………………………………………………………………………………………………..F- 
Housing Mounting ………………………………………………………………………………………………………………F- 
Wheel Rim Mounting …………………………………………………………………………………………………………..F- 
Transmission Mounting ……………………………………………………………………………………………………………..(X-)
F- 
HYDRAULIC SYSTEM
Hydraulic Tank (Without Secondary Steering, Automatic Control) …………………………………………………..(X-)
Tank and Elbow …………………………………………………………………………………………………………………H- 
Element and Strainer ………………………………………………………………………………………………………….H- 
Piping and Bracket ……………………………………………………………………………………………………………..H- 
Hydraulic Tank Cover …………………………………………………………………………………………………………H- 
Hydraulic Tank (With Secondary Steering, Automatic Control) ……………………………………………………….(X-)
Tank and Elbow …………………………………………………………………………………………………………………H- 
Element and Strainer ………………………………………………………………………………………………………….H- 
Piping and Bracket ……………………………………………………………………………………………………………..H- 
Hydraulic Tank Cover …………………………………………………………………………………………………………H- 
Control Valve ……………………………………………………………………………………………………………………………(X-)
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………….H- 
-valve (/) …………………………………………………………………………………………………………………..H- 
-valve (/) …………………………………………………………………………………………………………………..H- 
-valve (/) …………………………………………………………………………………………………………………..H- 
Bracket ……………………………………………………………………………………………………………………………..H- 
Elbow ……………………………………………………………………………………………………………………………….H- 
Steering Demand Valve …………………………………………………………………………………………………………….(X-)
Inner Parts, Demand Valve ………………………………………………………………………………………………….H- 
Bracket ……………………………………………………………………………………………………………………………..H- 
Steering Piping …………………………………………………………………………………………………………………..H- 
Steering Drain Piping ………………………………………………………………………………………………………….H- 
Hydraulic Pump (Without Secondary Steering, Automatic Control) ………………………………………………….(X-)
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Loader Pump (/) ……………………………………………………………………………………………………………..H- 
Fan and Brake Pump (/) …………………………………………………………………………………………………..H- 
Fan and Brake Pump (/) …………………………………………………………………………………………………..H- 
Fan and Brake Pump (/) …………………………………………………………………………………………………..H- 
Fan and Brake Pump (/) …………………………………………………………………………………………………..H- 
Steering Pump (/) ……………………………………………………………………………………………………………H- 
Steering Pump (/) ……………………………………………………………………………………………………………H- 
Steering Pump (/) ……………………………………………………………………………………………………………H-

Pages: 634
Language: English
Format: PDF

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