Komatsu Excavator PC290LC-8 PC290NLC-8 service & repair manual

Description Komatsu Excavator PC290LC-8 PC290NLC-8 service & repair manual

Komatsu Hydraulic Excavator PC290LC-8, PC290NLC-8 pdf workshop service manual

Serial numbers:
K50001 and up, 10001 and up

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

MANUAL CONTENT:
Index and foreword
Organization list of the shop manual
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
Method of disassembling and connecting push-pull type coupler
Standard tightening torque table
Conversion table

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

Structure, function and maintenance standard
Engine and cooling system
Engine related parts
Radiator, oil cooler, aftercooler and fuel cooler
Diesel Particulate Filter
Power train
Final drive
Swing machinery
Swing circle
Undercarriage and frame
Track frame and recoil spring
Idler
Carrier roller
Track roller
Track shoe
Hydraulic system
Hydraulic equipment layout drawing
Hydraulic tank and filter
Hydraulic pump
Pilot oil filter
Control valve
CLSS
Functions and operation by valve
Swing motor
Centre swivel joint
Travel motor
PPC valve
Valve control
ATT EPC Valve Assembly
Solenoid valve
PPC Accumulator
Return oil filter
Attachment circuit selector valve
Quick coupler control valve
Hydraulic cylinder
Work equipment
Dimensions of components
Cab and its attachments
Air conditioner piping
Electrical system
Engine control
Electrical control system
Monitor system
Sensor
PPC Levers
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
Tools for testing, adjusting, and troubleshooting
Measuring engine speed
Measuring intake air pressure (boost pressure)
Checking exhaust gas colour
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
Measuring fuel return rate and leakage
Bleeding air from fuel circuit
Checking fuel circuit for leakage
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
Measuring and adjusting oil pressure in pump PC control circuit
Measuring and adjusting oil pressure in pump LS control circuit
Measuring solenoid valve output pressure
Measuring PPC valve output pressure
Adjusting play of work equipment and swing PPC valves
Checking parts which cause hydraulic drift of work equipment
Releasing residual pressure from hydraulic circuit
Measuring oil leakage
Bleeding air from each part
Checking cab tipping stopper
Adjusting mirrors
Special functions of machine monitor
Handling high-voltage circuit of engine controller
Preparation work for troubleshooting of electrical system
Procedure for testing diodes
Pm Clinic service

Troubleshooting
General information on troubleshooting
Points to remember when troubleshooting
Sequence of events in troubleshooting
Check before troubleshooting
Classification and procedures for troubleshooting
How to read electric wire code
Connection table for connector pin numbers
T-boxes and T-adapters 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 tool 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 fuel cooler assembly
Removal and installation of engine and hydraulic 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 center swivel joint assembly
Disassembly and assembly of center 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's 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 assembly

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

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