Komatsu Excavator PC390LC-8M0 parts + service manual

Description Komatsu Excavator PC390LC-8M0 parts + service manual

Komatsu Hydraulic Excavator PC390LC-8M0 pdf parts manual + workshop service repair manual

Serial numbers:
80699 and up
82062 and up

Technical documentation, specifications, maintenance procedures, testing & troubleshooting guidance, electrical wiring diagrams, hydraulic schematics, instructions for adjustment, assembly, disassembly, removal and installation

MANUAL CONTENT:
PARTS CATALOG PC390LC-8M0 serial number 81354 and up

WORKSHOP MANUAL
Index and foreword
Foreword and general information
Foreword, safety and general information
How to read the shop manual
Explanation of terms for maintenance standard
Handling equipment of fuel system devices
Handling of intake system parts
Handling of hydraulic equipment
Method of disconnecting and connectingof push-pull type coupler
Handling of electrical equipment
How to read electric wire code
Precautions when performing operation
Practical use of KOMTRAX
Standard tightening torque table
List of abbreviation
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
Swing circle
Swing machinery
Final drive
Sprocket
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
Control valve
CLSS
Functions and operation by valve
Attachment circuit selector valve
Hydraulic drift prevention valve
Valve control
PPC valve
Solenoid valve
PPC accumulator
Center swivel joint
Travel motor
Swing motor
Work equipment cylinder
Work equipment
Dimensions of components
Electrical system
Engine control system
Electronic control system
Machine monitor system
Sensor
KOMTRAX system

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

Testing and adjusting
Related information on testing and adjusting
Tools for testing, adjusting and troubleshooting
Sketches of special tools
Engine and cooling system
Testing engine speed
Testing air boost pressure
Testing exhaust gas color
Adjusting valve clearance
Testing compression pressure
Testing blowby pressure
Testing engine oil pressure
Testing fuel pressure
Handling during cylinder cutout operation
Handling during no-injection cranking operation
Testing fuel return rate and leakage
Bleeding air from fuel circuit
Checking fuel circuit for leakage
Testing and adjusting air compressor belt tension
Replacing fan belt
Replacing alternator belt
Power train
Testing clearance in swing circle bearings
Undercarriage and frame
Testing and adjusting track tension
Hydraulic system
Testing and adjusting oil pressure in work equipment, swing and travel circuit
Testing control circuit oil pressure
Testing and adjusting pump PC control circuit oil pressure
Testing and adjusting pump LS control circuit oil pressure
Testing solenoid valve output pressure
Testing PPC valve output pressure
Adjusting play of work equipment and swing PPC valves
Inspecting locations of hydraulic drift of work equipment
Releasing remaining pressure in hydraulic circuit
Testing oil leakage amount
Bleeding air from various parts
Testing and charging accumulator (manufactured by NOK) nitrogen gas pressure for attachment (low pressure side)
Testing and charging accumulator nitrogen gas pressure for attachment (high pressure side)
Replacing accumulator bladder on high pressure side for accumulator piping
Electrical sysytem
Special functions of machine monitor
Handling voltage circuit of engine controller
Preparation work for troubleshooting of electrical system
Procedure for testing diodes
Pm clinic
Pm clinic service

Troubleshooting
General Information on troubleshooting
Symptom and troubleshooting numbers
Sequence of events in troubleshooting
Checks before troubleshooting
Classification and procedures for troubleshooting
Symptom and troubleshooting numbers
Information in troubleshooting table
Connector list and layout
Connection table for connector pin numbers
T- branch box and T- branch adapter table
Troubleshooting method for open circuit in wiring harness of pressure sensor system
Failure codes table
Fuse locations
Troubleshooting by failure code
Troubleshooting of electrical system (E-mode)
Troubleshooting of hydraulic and mechanical system (H-mode)
Troubleshooting of engine (S-mode)

Disassembly and assembly
Related 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 supply pump assembly
Removal and installation of engine front oil seal
Removal and installation of engine rear oil 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 pump assembly
Power train system
Removal and installation of travel motor and 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 hydraulic pump input shaft oil seal
Disassembly and assembly of work equipment PPC valve assembly
Disassembly and assembly of travel PPC valve assembly
Disassembly and assembly of work equipment 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's cab glass (adhered window glass)
Removal and installation of front window assembly
Removal and installation of floor frame assembly
Removal and installation of work equipment control lever assembly
Electrical system
Removal and installation of air conditioner unit assembly
Removal and installation of KOMTRAX terminal assembly
Removal and installation of machine monitor assembly
Removal and installation of pump controller assembly
Removal and installation of engine controller assembly

Appendix
Air conditioner
Precautions for refrigerant
Air conditioner component
Configuration and function of refrigeration cycle
Outline of refrigeration cycle
Air conditioner unit
Air conditioner controller
Compressor
Condenser
Receiver drier
Sensor
Procedure for testing and troubleshooting
Circuit diagram and arrangement of connector pins
System diagram
Parts and connectors layout
Testing air leakage (duct)
Testing with self-diagnosis function
Testing vent (mode) changeover
Testing FRESH/RECIRC air changeover
Testing sunlight sensor
Testing (dual) pressure switch for refrigerant
Testing relays
Troubleshooting chart
Information in troubleshooting table
Troubleshooting for power supply and CAN communication system (Air conditioner does not operate)
Troubleshooting for compressor and refrigerant system (Air is not cooled)
Troubleshooting for blower motor system (No air comes out or air flow is abnormal)
Troubleshooting for FRESH/RECIRC air changeover
Troubleshooting with gauge pressure
Connection of service tool
Precautions for disconnecting and connecting air conditioner piping
Handling of compressor oil

Diagrams and drawings
Hydraulic diagrams and drawings
Symbols in hydraulic circuit diagram
Hydraulic circuit diagram
Electrical diagrams and drawings
Symbols in electric circuit diagram
Electrical circuit diagram

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