Komatsu Excavator PC450-8 PC450LC-8 PC450LCD-8 PC450LCHD-8 service & repair manual

Description Komatsu Excavator PC450-8 PC450LC-8 PC450LCD-8 PC450LCHD-8 service & repair manual

Komatsu Hydraulic Excavator PC450-8, PC450LC-8, PC450LCD-8, PC450LCHD-8 pdf workshop service repair manual + operation & maintenance manual

Serial numbers:
PC450-8 K50001 and up
PC450LC-8 K50001 and up, A10001 and up
PC450LCD-8 K50001 and up
PC450LCHD-8 K50001 and up

Specifications, testing, troubleshooting, maintenance, technical documentation, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
Index and foreword
Foreword and general information
Safety notice
How to read the shop manual
Explanation of terms for maintenance standard
Handling electric equipment and hydraulic component
How to read electric wire code
Precautions when carrying out operation
Method of disassembling and connecting push-pull type coupler
Standard tightening torque table
Conversion table

Specification
Specification and technical data
Specification dimension drawings
Weight table
Table of fuel, coolant and lubricants

Structure, function and maintenance standard
Engine and cooling system
Engine related parts
Radiator, oil cooler and aftercooler
Power train
Final drive
Sprocket
Swing machinery
Swing circle
Undercarriage and frame
Track frame and recoil spring
Idler
Carrier roller
Track roller
Track shoe
Hydraulic system, Part 1
Hydraulic equipment layout drawing
Hydraulic tank and filter
Hydraulic pump
Hydraulic system, Part 2
Control valve
CLSS
Functions and operation by valve
Attachment circuit selector valve
Holding valve
Hydraulic system, Part 3
Valve control
PPC valve
Solenoid valve
PPC accumulator
Return oil filter
Centre swivel joint
Travel motor
Swing motor
Hydraulic cylinder
Work equipment
Dimensions of components
Cab and its attachments
Air conditioner piping
Electrical system
Engine control
Electronic control system
Monitor system
Idle stop guidance function
User code/failure code display function
Sensor
KOMTRAX terminal system
Auto Grease system
Outline of Auto Grease System
Assembly
Components
The Greasing Cycle
Introduction

Standard value table
Standard service value table
Standard value table for engine related parts
Standard value table for chassis related parts

Testing and adjusting
Testing and adjusting, part 1
Tools for testing, adjusting and troubleshooting
Measuring engine speed
Measuring air boost pressure
Measuring exhaust temperature
Measuring exhaust gas color
Adjusting valve clearance
Measuring compression pressure
Measuring blow-by pressure
Measuring engine oil pressure
Handling fuel system parts
Releasing residual pressure from fuel system
Measuring fuel pressure
Handling during cylinder cut-out operation
Handling during no injection cranking operation
Measuring fuel return rate and leakage
Bleeding air from fuel circuit
Checking fuel circuit for leakage
Checking and adjusting fan belt and alternator belt
Checking and adjusting air conditioner compressor belt tension
Measuring swing circle bearing clearance
Checking and adjusting track shoe tension
Measuring and adjusting oil pressure in work equipment, swing, and travel circuits
Measuring control circuit basic pressure
Checking and adjusting pump PC control circuit oil pressure
Checking and adjusting pump LS control circuit oil pressure
Measuring solenoid valve output pressure
Measuring PPC valve output pressure
Adjusting play of work equipment and swing PPC valves
Inspecting locations of hydraulic drift of work equipment
Releasing residual pressure from hydraulic circuit
Measuring oil leakage amount
Bleeding air from various parts
Testing and adjusting, Part 2
Special functions of machine monitor
Testing and adjusting, Part 3
Handling voltage circuit of engine controller
Preparation work for troubleshooting of electrical system
Procedure for testing diodes
Pm Clinic service
Undercarriage troubleshooting report

Troubleshooting
Failure code table and fuse locations
Failure codes table
Fuse locations
General information on troubleshooting
Points to remember when troubleshooting
Sequence of events in troubleshooting
Checks before troubleshooting
Classification and troubleshooting steps
Information in troubleshooting table
Wiring table for connector pin numbers
T-adapter box and T-adapter table
Troubleshooting by failure code (Display of code)
Troubleshooting of electrical system (E-mode)
Troubleshooting of hydraulic and mechanical system (H-mode)
Troubleshooting of engine (S-mode)
Troubleshooting of Auto Grease system

Disassembly and assembly
General information on disassembly and assembly
How to read this manual
Coating materials list
Special tools list
Sketches of special tools
Engine and cooling system
Removal and installation of fuel supply pump assembly
Removal and installation of fuel injector assembly
Removal and installation of engine front seal
Removal and installation of engine rear seal
Removal and installation of cylinder head assembly
Removal and installation of radiator assembly
Removal and installation of hydraulic oil cooler assembly
Removal and installation of aftercooler assembly
Removal and installation of engine and hydraulic oil pump assembly
Power train
Removal and installation of final drive assembly
Disassembly and assembly of final drive assembly
Removal and installation of swing motor and swing machinery assembly
Disassembly and assembly of swing motor and swing machinery assembly
Removal and installation of swing circle assembly
Undercarriage and frame
Disassembly and assembly of carrier roller assembly
Disassembly and assembly of track roller assembly
Disassembly and assembly of idler assembly
Disassembly and assembly of recoil spring assembly
Removal and installation of sprocket
Expansion and installation of track shoe assembly
Removal and installation of revolving frame assembly
Removal and installation of counterweight assembly
Hydraulic system
Removal and installation of centre swivel joint assembly
Disassembly and assembly of centre swivel joint assembly
Removal and installation of hydraulic tank assembly
Removal and installation of control valve assembly
Disassembly and assembly of control valve assembly
Removal and installation of hydraulic pump assembly
Removal and installation of oil seal in hydraulic pump input shaft
Disassembly and assembly of work equipment PPC valve assembly
Disassembly and assembly of travel PPC valve assembly
Disassembly and assembly of hydraulic cylinder assembly
Work equipment
Removal and installation of work equipment assembly
Cab and its attachments
Removal and installation of operator cab assembly
Removal and installation of operator cab glass (stuck glass)
Removal and installation of front window assembly
Removal and installation of floor frame assembly
Electrical system
Removal and installation of air conditioner unit assembly
Removal and installation of KOMTRAX communication modem assembly
Removal and installation of monitor assembly
Removal and installation of pump controller assembly
Removal and installation of engine controller

Diagrams and drawings
Hydraulic diagrams and drawings
Hydraulic circuit diagram
Electrical diagrams and drawings
Connector arrangement diagram
Electrical circuit diagram

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