Komatsu Excavator PC350LL-7E0 service & repair manual

Description Komatsu Excavator PC350LL-7E0 service & repair manual

Komatsu Logging / Road Builder Excavator PC350LL-7E0 pdf workshop service repair manual + operation & maintenance manual

Serial number A50001 and up

MANUAL CONTENT:
GENERAL
SPECIFICATIONS
Dimensions
Road Builder
Working Ranges
Road Builder
WEIGHT TABLE
FUEL, COOLANT, AND LUBRICANTS

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
ENGINE RELATED PARTS
RADIATOR OIL COOLER AFTERCOOLER
POWER TRAIN
FINAL DRIVE
SPROCKET
Sprocket Tool
SWING MACHINERY
Swing Circle
TRACK FRAME RECOIL SPRING
IDLER
TRACK ROLLER/CARRIER ROLLER
TRACK SHOE
TRIPLE GROUSER SHOE
DOUBLE GROUSER SHOE
HYDRAULIC EQUIPMENT
HYDRAULIC TANK AND FILTER
HYDRAULIC PUMP
LS Valve
PC Valve
LS(PC)-EPC Valve
Variable Volume Valve
CONTROL VALVE
CLSS
VALVE FUNCTIONS AND OPERATION
UNLOADER VALVE
INTRODUCTION OF LS PRESSURE
LS BYPASS VALVE
PRESSURE COMPENSATION VALVE
Pressure Compensation Valve Inner Shuttle
Boom Regeneration Circuit
Arm Regeneration Circuit
MERGE-DIVIDER VALVE
LS SELECT VALVE
SELF PRESSURE REDUCING VALVE
TRAVEL JUNCTION VALVE
TRAVEL PPC SHUTTLE VALVE
BOOM DRIFT PREVENTION VALVE
ARM DRIFT PREVENTION VALVE
QUICK RETURN VALVE
LIFT CHECK VALVE
MAIN RELIEF VALVE
2-STAGE SAFETY-SUCTION VALVE
VARIABLE PRESSURE COMPENSATION VALVE
CONTROL VALVE
PPC VALVE
PRESSURE REDUCING VALVE
Straight Travel PPC Valve
PPC Accumulator
SOLENOID VALVE
ATTACHMENT SOLENOID VALVE
CENTER SWIVEL JOINT
TRAVEL MOTOR
Operation of Motor
PARKING BRAKE
Brake Valve Operation
SAFETY VALVE
SWING MOTOR
Swing Holding Brake
Relief Valve Portion
REVERSE PREVENTION VALVE
Explanatory Drawing of Effects
HYDRAULIC CYLINDERS - EXCAVATOR WORK EQUIPMENT
Boom Cylinder
Arm Cylinder
Bucket Cylinder
WORK EQUIPMENT PIVOT POINT MEASUREMENTS
Boss Bushing/Pins - Excavator Work Equipment
Dimension of Arm - Excavator Work Equipment
Dimension of Bucket
CAB AND ATTACHMENTS
Air Conditioner Piping
ELECTRICAL SYSTEM
Engine Control
ELECTRONIC COMPONENTS
Fuel Control Dial
Engine Controller
Coolant Temperature Sensor
Oil Pressure Switch
Engine Speed Sensor
Boost Pressure and Temperature Sensor
WIF (Water-in-fuel Detection) Sensor
Engine Oil Level Sensor
ELECTRONIC CONTROL SYSTEM
System Diagram
Engine and Pump Control Function
Pump and Valve Control
LS Control Function
Cut-off Function
2-stage Relief Function
Power Maximizing and Machine Push-up
Auto-deceleration
Auto-warm-up and Overheat Prevention
Swing Control
Travel Control
Attachment Flow Control and Circuit Selector (If Equipped)
SYSTEM COMPONENTS
PPC Oil Pressure Switch
Oil Pressure Sensor
MONITOR SYSTEM
Machine Monitor
MONITOR CONTROL AND DISPLAY
Monitor
Display
SWITCHES
Brightness, Contrast Adjustment
Service Meter Check Function
Display Lcd Check Function
User Code Display Function
SENSOR
Hydraulic Oil and Coolant Temperature Sensor
Fuel Level Sensor
Air Cleaner Clogging Sensor
KOMTRAX TERMINAL SYSTEM
Komtrax Terminal

STANDARD VALUE TABLES
Engine Related
Chassis Related

TESTING AND ADJUSTING
SERVICE TOOLS
Engine Service Tools
Chassis Service Tools
ENGINE
Engine Speed
Air Boost Pressure
Exhaust Gas Color
Valve Clearance
Compression Pressure
Blow-by Pressure
Engine Oil Pressure
Fuel Pressure
Handling During Cylinder Cut-out Operation
Handling During No Injection Cranking Operation
Fuel Return Rate And Leakage
Bleeding Air From Fuel Circuit
Fuel Circuit For Leakage
AIR COMPRESSOR BELT TENSION
FAN BELT
ALTERNATOR BELT
ENGINE FUNCTIONS
Measure Engine Speed With Machine Monitor
Preparation
Measuring Low Idle Speed
Measuring High Idle Speed
Measuring the Engine Speed When 2-pumps are Relieved
Measuring the Engine Speed At 2-pump Relief and Power Maximizing (Near Rated Speed)
Measuring the Speed When Auto-deceleration Speed is in Operation
Determining a Defective Cylinder
Procedures
Determining Cylinder Group
Isolating the Defective Cylinder
Cylinder Cut-out Operation
No Injection Cranking Operation
REFRIGERANT COMPRESSOR BELT
SWING CIRCLE BEARING CLEARANCE
TRACK SHOE TENSION
OIL PRESSURE IN WORK EQUIPMENT
OIL PRESSURE IN SWING
OIL PRESSURE IN TRAVEL CIRCUIT
CONTROL CIRCUIT OIL PRESSURE
PUMP PC CONTROL CIRCUIT OIL PRESSURE
SOLENOID VALVE OUTPUT PRESSURE
ATTACHMENT SOLENOID VALVE OUTPUT
PPC VALVE OUTPUT
ATTACHMENT PPC VALVE OUTPUT
WORK EQUIPMENT AND SWING PPC VALVES
Adjust Play
HYDRAULIC DRIFT IN WORK EQUIPMENT
Boom and Bucket Cylinders Inspection
Arm Cylinder Inspection
Boom Lock Valve Inspection
PPC Valve Inspection
RELEASE REMAINING PRESSURE IN HYDRAULIC CIRCUIT
Oil Leakage Amount
BLEEDING AIR FROM VARIOUS SYSTEMS
DIODE INSPECTION PROCEDURES
MACHINE MONITOR - SPECIAL FUNCTIONS
Ordinary and Special Functions
Operators Menu and Display (Outline)
SERVICE MENU OPERATION AND DISPLAY
Switching To Service Menu
Monitoring Function
Function Of Abnormality Record
Function of Maintenance Record
Function of Maintenance Mode Change
Function of Phone Number Entry
Function of Default
Function of Adjustment
Function of Cylinder Cut Out Operation
Function of No Injection Cranking
HANDLING VOLTAGE CIRCUIT OF ENGINE CONTROLLER
PROCEDURE FOR TURNING ON KOMTRAX TERMINAL
KOMTRAX TERMINAL LAMP INDICATIONS
TROUBLESHOOTING ELECTRICAL SYSTEM
PM-CLINIC INSPECTION TABLE

TROUBLESHOOTING
POINTS TO REMEMBER WHEN TROUBLESHOOTING
SEQUENCE OF EVENTS IN TROUBLESHOOTING
PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
Precautions when Handling Electrical Equipment
Handling Electronic Control Unit
Points to Remember when Troubleshooting Electrical Circuits
Points to Remember when Handling Hydraulic Equipment
Checks Before Troubleshooting
Categories and Method of using Troubleshooting Charts
Troubleshooting Individual Electrical Circuits
Troubleshooting Individual Hydraulic Circuits
POSSIBLE PROBLEMS WHEN TROUBLESHOOTING A MODE
CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
T-ADAPTER TABLE
CONNECTOR TYPES AND LOCATIONS
CONNECTOR LAYOUT DRAWINGS
TROUBLESHOOTING BY FAILURE CODE
Before carrying out troubleshooting when failure code is displayed
Location of Fuse Box and Fuse Numbers
INFORMATION CONTAINED IN TESTING PROCEDURES
FAILURE CODE (DISPLAY OF CODE)

DISASSEMBLY AND ASSEMBLY
SPECIAL TOOLS LIST
CONNECTOR REPAIR PROCEDURES
Contact Terminal Removal (HD30 Type)
Stripping Insulation
Crimping Contact Terminal (HD30 Type)
Insertion of Contact Terminal (HD30 Type)
Contact Terminal Removal (DT Type)
Stripping Insulation
Crimping Contact Terminal (DT Type)
Insertion of Contact Terminal (DT Type)
ENGINE COMPONENTS
Cylinder Head
Engine Front Seal
Engine Rear Seal
Fuel Supply Pump
Valves
ENGINE AND COOLING SYSTEM
Hydraulic Oil Cooler
Engine and Hydraulic Pump
POWER TRAIN
UNDERCARRIAGE AND FRAME
HYDRAULIC SYSTEM
WORK EQUIPMENT
CAB AND ITS ATTACHMENTS
ELECTRICAL SYSTEM

AIR CONDITIONER
STRUCTURE AND FUNCTION
TESTING AND ADJUSTING
TROUBLESHOOTING

OTHERS
ELECTRICAL CIRCUIT DIAGRAMS
HYDRAULIC CIRCUIT DIAGRAMS

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