Komatsu Excavator PC228US-8 PC228USLC-8 service & repair manual

Description Komatsu Excavator PC228US-8 PC228USLC-8 service & repair manual

Komatsu Hydraulic Excavator PC228US-8, PC228USLC-8 pdf workshop service repair manual + operation & maintenance manual

Serial number 50001 and up

Technical documentation, specifications, troubleshooting, maintenance, electrical diagrams, hydraulic schematics, adjusting, assembly, disassembly, removal, installation instructions and other information

MANUAL CONTENT:
Specifications
Specifications drawing
Working range diagram
Table of weight
Table of fuel, coolant and lubricants

Structure and function
Engine and cooling system
Engine related parts
Cooling system
Power train system
Power train
Swing circle
Swing machinery
Final drive
Undercarriage and frame
Track frame and idler cushion
Hydraulic system
Hydraulic equipment layout drawing
Valve control
Hydraulic tank
CLSS
Main pump
Control valve
Function and operation by valve
Swing motor
Travel motor
PPC valve
Solenoid valve
Attachment circuit selector valve
Anti-drop valve
Multi-control valve
Center swivel joint
Accumulator
Work equipment
Electrical system
Electronic control system
Machine monitor system
KOMTRAX system
Sensors

Standard value table
Standard value table for engine
Standard value table for machine

Testing and adjusting
Tools for testing, adjusting, and troubleshooting
Engine and cooling system
Testing engine speed
Testing intake air pressure (boost pressure)
Testing exhaust gas color
Testing and adjusting valve clearance
Testing compression pressure
Testing blow by pressure
Testing engine oil pressure
Handling fuel system parts
Releasing remaining pressure from fuel system
Testing fuel pressure
Cylinder cut-out test mode
No-injection cranking
Checking fuel delivery, return rate and leakage
Bleeding air from fuel circuit
Testing fuel circuit for leakage
Testing and adjusting air conditioner compressor belt tension
Replacing fan belt
Undercarriage and frame
Testing swing circle bearing clearance
Checking and adjusting track tension
Hydraulic system
Testing and adjusting oil pressure in work equipment, swing and travel circuits
Testing control circuit source pressure
Testing and adjusting oil pressure in pump PC control circuit
Testing and adjusting oil pressure in pump LS control circuit
Testing solenoid valve output pressure
Testing PPC valve output pressure
Adjusting play of work equipment and swing PPC vavles
Testing pump swash plate sensor
Isolating the parts causing hydraulic drift of work equipment
Releasing remaining pressure from hydraulic circuit
Testing oil leakage amount
Bleeding air from each part
Work equipment
Replacement procedure of boom angle potentiometer
Cab and its attachments
Checking cab tipping stopper
Adjusting mirrors
Angle adjustment of rear view camera
Electrical system
Speial function of machine monitor (EMMS)
Handling voltage circuit of engine controller
Preparatory 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
Checks before troubleshooting
Classification and procedures for troubleshooting
Failure codes table
Symptom and troubleshooting numbers
Information in troubleshooting table
Troubleshooting method for open circuit in wiring harness of pressure sensor system
Connector list and layout
Connection table for connector pin numbers
T- branch box and T- branch adapter table
Fuse location table
Troubleshooting by failure code

Disassembly and assembly
General information on disassembly and assembly
Coating materials list
Special tools list
Sketches of special tools
Engine and cooling system

Maintenance standard
Engine and cooling system
Engine mount
Cooling system
Power train
Swing circle
Swing machinery
Final drive
Sprocket
Undercarriage and frame
Track frame and idler cushion
Idler
Track roller
Carrier roller
Track shoe
Hydraulic system
Hydraulic tank
Main pump
Control valve
Swing motor
Travel motor
PPC valve
Solenoid valve
Attachment circuit selector valve
Anti-drop valve
Center swivel joint
Work equipment
Work equipment
Dimensions of components
Work equipment cylinder

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 and Modulator
Sensor
Procedure for testing and troubleshooting
Circuit diagram and arrangement of connector pins
System diagram
Detail of air conditioner unit
Parts and connectors layout
Testing air leakage (duct)
Testing with self-diagnosis function
Testing vent (mode) changeover
Testing FRESH/RECIRC air changeover
Testing inner sensor
Testing outer sensor
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

Diagrams and drawings
Symbols used in hydraulic circuit diagrams
Hydraulic circuit diagram
Symbols used in electric circuit diagrams
Electrical circuit diagram
Air conditioner electrical circuit diagram

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