Komatsu Excavator PC270LC-7L service & repair manual

Description Komatsu Excavator PC270LC-7L service & repair manual

Komatsu Hydraulic Excavator PC270LC-7L pdf workshop service repair manual + operation & maintenance manual

Serial number A86001 and up

MANUAL CONTENT:
GENERAL
SPECIFICATION DIMENSION DRAWINGS
Dimensions
Working Ranges
SPECIFICATIONS
WEIGHT TABLE
FUEL, COOLANT AND LUBRICANTS
Recommended Brands, Recommended Quality For Products Other Than Komatsu
Genuine Oil

STRUCTURE AND FUNCTION
ENGINE RELATED PARTS
RADIATOR OIL COOLER AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SWING MACHINERY
SWING CIRCLE
TRACK FRAME RECOIL SPRING
IDLER
CARRIER ROLLER
TRACK ROLLER
TRACK SHOE
TRIPLE GROUSER SHOE
HYDRAULIC EQUIPMENT LAYOUT DRAWING
HYDRAULIC TANK
HYDRAULIC PUMP
HPV95+95
LS valve
PC Valve
LS(PC)-EPC Valve
CONTROL VALVE
SELF PRESSURE REDUCING VALVE
Main Relief Valve
VARIABLE PRESSURE COMPENSATION VALVE
CLSS
SWING MOTOR
Relief Valve Portion
REVERSE PREVENTION VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
Motor Operation
Parking Brake Operation
Brake Valve Operation
TRAVEL JUNCTION VALVE
TRAVEL PPC SHUTTLE VALVE
VALVE CONTROL
WORK EQUIPMENT SWING PPC VALVE
TRAVEL PPC VALVE
SERVICE PPC VALVE
SOLENOID VALVE
PPC ACCUMULATOR
RETURN OIL FILTER
BOOM HYDRAULIC DRIFT PREVENTION VALVE
LIFT CHECK VALVE
ATTACHMENT CIRCUIT SELECTOR VALVE
HYDRAULIC CYLINDERS
Boom Cylinder
Arm Cylinder
Bucket Cylinder
WORK EQUIPMENT
100 Hours
500 Hours
Dimension Of Arm
Dimension Of Bucket
AIR CONDITIONER
Piping
ENGINE CONTROL
Fuel Control Dial
Governor Motor
Engine Throttle And Pump Controller
Input And Output Signals
ELECTRONIC CONTROL SYSTEM
Total System Diagram
MULTI MONITOR SYSTEM
Monitor Panel
Monitor Control, Display Portion Monitor Portion
Maintenance Function
7-SEGMENT MONITOR SYSTEM
Monitor panel
SENSORS
Engine Oil Level Sensor
Engine Oil Pressure Sensor (For Low Pressure)
Coolant Temperature Sensor
Hydraulic Oil Temperature Sensor
Fuel Level Sensor
Air Cleaner Clogging Sensor

STANDARD VALUE TABLES
Engine
Chassis

TESTING AND ADJUSTING
SERVICE TOOLS
ENGINE
Engine Speed
Exhaust Gas Color
Valve Clearance
Compression Pressure
Blow-by Pressure
Fuel Injection Timing
Engine Oil Pressure
Engine Speed Sensor
Defective Cylinder
BELT TENSION - AIR COMPRESSOR
ENGINE CONTROL SYSTEM FAILURE
SWING CIRCLE BEARINGS
TRACK SHOE TENSION
SPROCKET
OIL PRESSURE
Work Equipment, Swing And Travel
Control Circuit
Pump PC Control Circuit
Pump LS Control Circuit
Solenoid Valve Output Pressure
PPC Valve Output Pressure
WORK EQUIPMENT AND SWING PPC VALVE
WORK EQUIPMENT - HYDRAULIC DRIFT
RELEASING PRESSURE IN HYDRAULIC CIRCUIT
OIL LEAKAGE
AIR BLEEDING OF VARIOUS PARTS
DIODE INSPECTION PROCEDURES
MULTI-MONITOR PANEL
Monitor Panel Functions - Conventional And Special
Conventional Function: Operator's Menu
Special Function: Service Menu
Operator's Menu And Display (Outline)
Table For Service And Failure Code Numbers
Service Menu
7-SEGMENTS MONITOR PANEL - SPECIAL FUNCTIONS
Ordinary functions and special functions of monitor panel
Display of operator menu
Operation and display of service menu
ELECTRICAL SYSTEM TROUBLESHOOTING
PM TUNE UP SERVICE

TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE
CHECKS BEFORE TROUBLESHOOTING
CLASSIFICATION AND STEPS FOR TROUBLESHOOTING
Classification Of Troubleshooting
Steps For Troubleshooting
Failure-looking Phenomenon And Troubleshooting No
ELECTRICAL CIRCUIT DIAGRAM SYSTEM

DISASSEMBLY AND ASSEMBLY
PRECAUTIONS DURING OPERATION
Precautions When Carrying Out Removal Work
Precautions When Carrying Out Installation Work
Precautions When Completing The Operations
Other Precautions
SPECIAL TOOL LIST
SKETCHES OF SPECIAL TOOLS
STARTING MOTOR

DIAGRAMS AND SCHEMATICS
ELECTRICAL DIAGRAM
A/C HEATER DIAGRAM
HYDRAULIC DIAGRAM

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