Factory Shop Manual For Komatsu Excavator. Manual Contains Illustrations, Instructions, Diagrams For Step By Step Remove And Install, Assembly And Disassembly, Service, Inspection, Repair, Troubleshooting, Tune-Ups.

Format: PDF
Language: English
Pages: 785
Number: SEBM025109 (august 2003)
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

Komatsu Excavator
PC78US-6
Serial No. 4001 and up
Serial No. 4809 and up (fro Norway)

PC78UU-6
Serial No. 228321 and up

Contents

FOREWORD
-GENERAL
Specification Dimensions Drawing
Working Range Drawing
Specifications
Weight Table
List Of Lubricants And Coolant
-STRUCTURE AND FUNCTION, MAINTENANCE STANDARD
PTO
Cooling System
Power Train System
Swing Circle
Swing Machinery
Track Frame And Idler Cushion
Idler
Track Roller
Carrier Roller
Sprocket
Track Shoe
Arrangement Of Hydraulic Components
Hydraulic Tank And Oil Filter
Center Swivel Joint
Travel Motor
Work Equipment Cylinder
Solenoid Valve
Multi-Control Valve
Accumulator For Brake
Hydraulic Pump PC78US-6 (With Blade) Serial No.: 4001 – 5500; PC78UU-6 (With Blade) Serial No.: 22832 – 23500
Control Valve
CLSS
Swing Motor
Work Equipment And Swing PPC Valve
Travel PPC Valve
Offset PPC Valve, Attachment PPC Valve, And Blade PPC Valve
Work Equipment
Dimensions Of Each Part Of Work Equipment
Air Conditioner Piping System
Electric Control System
System Components
Monitor System
Sensors
-TESTING AND ADJUSTING
Standard Value Table
Testing And Adjusting
Troubleshooting
-DISASSEMBLY AND ASSEMBLY
Method Of Using Manual
Precautions When Carrying Out Operation
Special Tool List
Removal, Installation Of Counterweight Assembly
Removal, Installation Of Injection Pump Assembly
Removal, Installation Of Cylinder Head Assembly
Removal, Installation Of Main Pump Assembly
Removal, Installation Of Control Pump Assembly
Removal, Installation Of Engine And Main Pump Assembly
Removal, Installation Of Hydraulic Oil Cooler Assembly
Removal, Installation Of Radiator Assembly
Removal, Installation Of Swing Motor And Swing Machinery Assembly
Disassembly, Assembly Of Swing Machinery Assembly
Removal, Installation Of Swing Motor Assembly
Removal, Installation Of Center Swivel Joint Assembly
Disassembly, Assembly Of Center Swivel Joint Assembly
Removal, Installation Of Control Valve Assembly
Assembly Of Control Valve Assembly
Assembly Of Work Equipment PPC Valve Assembly
Assembly Of Travel PPC Valve Assembly
Removal, Installation Of Hydraulic Tank Assembly
Removal, Installation Of Fuel Tank Assembly
Removal, Installation Of Controller Assembly
Removal, Installation Of Monitor Panel Assembly
Removal, Installation Of Air Conditioner Unit Assembly
Removal, Installation Of Operator’s Cab Assembly
Removal, Installation Of Floor Frame Assembly
Removal, Installation Of Revolving Frame Assembly
Removal, Installation Of Swing Circle Assembly
Removal, Installation Of Work Equipment Assembly
Removal, Installation Of First Boom Assembly
Removal, Installation Of Second Boom Assembly
Removal, Installation Of Offset Bracket Assembly
Expansion, Installation Of Steel Shoe, Rubber Pad Shoe, Road Liner Assembly
Removal, Installation Of Rubber Shoe Assembly
Removal, Installation Of Final Drive Assembly
Assembly Of Idler Assembly
Disassembly, Assembly Of Recoil Spring Assembly
Disassembly, Assembly Of Track Roller Assembly
Disassembly, Assembly Of Hydraulic Cylinder Assembly
-OTHER SPECIFICATIONS
PC78US-6 (For Norway)
General
Structure, Function, And Maintenance Standard
Troubleshooting
-OTHERS
Hydraulic Circuit Diagram
Electrical Circuit Diagram