Komatsu Mini Excavator PC25MR-5 service & repair manual

Description Komatsu Mini Excavator PC25MR-5 service & repair manual

Komatsu Mini Excavator PC25MR-5 pdf workshop service repair manual

Serial number:
25001 and up

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

SERVICE MANUAL CONTENT:
Index and Foreword
Foreword, Safety, Basic Information
How to Read the Shop Manual
Safety Notice for Operation
Precautions to Prevent Fire
Procedures If Fire Occurs
Precautions When You Discard Waste Materials
Precautions When You Handle Hydraulic Equipment
Precautions When You Disconnect and Connect Pipings
Precautions When You Handle Electrical Equipment
Precautions When You Handle Fuel System Equipment
Precautions When You Handle Intake System Equipment
Practical Use of KOMTRAX
Disconnect and Connect Push-Pull Type Coupler
Precautions for Disconnection and Connection of Connectors
Disconnect and Connect Deutsch Connector
How to Disconnect and Connect Slide Lock Type Connector
Disconnect and Connect Connector with Lock to Pull
Disconnect and Connect Connector with Lock to Push
Disconnect and Connect Connector with Housing to Rotate
Standard Tightening Torque Table
Abbreviation List

Specification
Specification Drawing
Working Range Drawings
Weight Table
Fuel, Coolant, Lubricant

Structure and Function
Boot-up System
Layout Drawing of Boot-up System
System Operating Lamp System
Battery Disconnect Switch
Engine System
Layout Drawing of Engine System
Engine Control System
Component Parts of Engine System
Cooling System
Layout Drawing of Cooling System
Control System
Layout Drawing of Control System
Machine Monitor System
KOMTRAX System
Component Parts of Control System
Hydraulic System
Layout Drawing of Hydraulic System
CLSS
Component Parts of Hydraulic System
Work Equipment System
Layout Drawing of Work Equipment System
Structure of Valve Control
PPC Lock System
Work Equipment Double Lock System
Component Parts of Work Equipment System
Swing System
Layout Drawing of Swing System
Component Parts of Swing System
Travel System
Layout Drawing of Travel System
System Diagram of Travel Control System
Component Parts of Travel System
Undercarriage and Frame
Layout Drawing of Undercarriage
Specifications of Undercarriage
Idler Cushion
Work Equipment
Structure of Work Equipment
Function of Work Equipment
Work Equipment Clearance Adjustment Shim

Standard Value Table
Standard Value Table for Engine
Standard Value Table for Engine: PC25MR-5
Standard Value Table for Machine
Standard Value Table for Machine: PC25MR-5
Gear Pump: PC25MR-5
Piston Pump PC25MR-5
Machine Posture and Procedures to Measure Performance

Testing and Adjusting
Related Information on Testing and Adjusting
Tools for Testing and Adjusting
Engine and Cooling System
Examine Engine Speed
Examine Exhaust Gas Color
Examine and Adjust Valve Clearance
Examine Compression Pressure
Examine Engine Oil Pressure
Examine and Adjust Fuel Injection Timing
Bleed Air from Fuel System
Examine Fuel Circuit for Leakage
Examine and Adjust Alternator Belt
Power Train
Examine Swing Circle Bearing Clearance
Undercarriage and Frame
Examine and Adjust Track Tension
Hydraulic System
Release Remained Pressure in Hydraulic Circuit
Examine and Adjust Oil Pressure in Work Equipment, Travel, and Boom Swing Circuits
Examine and Adjust Swing and Blade Circuit Oil Pressure
Examine and Adjust Oil Pressure in Control Circuit
Examine and Adjust Oil Pressure in Pump LS Control Circuit
Examine Outlet Pressure of Solenoid Valve
Examine PPC Valve Outlet Pressure
Adjust Play of Work Equipment and Swing PPC Valves
Examine Swing Parking Brake Release Pressure
Examine Travel Deviation
Examine Parts Which Cause Hydraulic Drift of Work Equipment
Examine Oil Leakage
Bleed Air from Hydraulic System
Pressurize Hydraulic Tank
Electrical System
How to Start Up KOMTRAX Terminal
Stop Use of KOMTRAX Terminal (Machine with KOMTRAX Terminal)
Display of KOMTRAX Terminal Lamps
Handle Battery Disconnect Switch
Examine Diodes
Pm Clinic
Pm Clinic Service

Troubleshooting
Related Information to Troubleshooting
General Troubleshooting Points
Sequence of Events in Troubleshooting
Checks Before Troubleshooting
Inspection Procedure Before Troubleshooting
Test in Accordance with Testing Procedure
Preparation for Troubleshooting of Electrical System
Procedure for Troubleshooting
Symptom and Troubleshooting Numbers
Connector List and Layout
Connector Contact Connection Table
T-Branch Box and T-Branch Adapter Table
Fuse Location Table
Troubleshooting of Electrical System (E-Mode)
Troubleshooting for Hydraulic and Mechanical Systems (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 Tool List
Engine and Cooling System
Drain and Add Coolant
Drain and Add Hydraulic Oil
Remove and Install Radiator Assembly
Remove and Install Hydraulic Oil Cooler Assembly
Remove and Install Engine and Main Pump Assembly
Remove and Install Fuel Tank Assembly
Power Train
Remove and Install Travel Motor Assembly
Remove and Install Swing Motor Assembly
Remove and Install Swing Circle Assembly
Undercarriage and Frame
Disassemble and Assemble Recoil Spring Assembly
Remove and Install Track Assembly
Disassemble and Assemble Idler Assembly
Disassemble and Assemble Track Roller Assembly
Remove and Install Revolving Frame Assembly
Remove and Install Counterweight Assembly
Hydraulic System
Remove and Install Center Swivel Joint Assembly
Remove and Install Hydraulic Tank Assembly
Remove and Install Main Pump Assembly
Work Equipment
Remove and Install Blade Assembly
Remove and Install Work Equipment Assembly
Disassemble and Assemble Work Equipment Cylinder Assembly
CAB Related Parts
Remove and Install Floor Frame Assembly
Remove and Install Operator Seat
Remove and Install Seat Belt
Electrical System
Remove and Install Machine Monitor Assembly
Remove and Install KOMTRAX Terminal Assembly

Maintenance Standard
Explanation of Terms for Maintenance Standard
Engine and Cooling System
Maintenance Standard for Engine Mount
Maintenance Standard for PTO
Maintenance Standard for Cooling System
Power Train
Maintenance Standard for Swing Circle
Maintenance Standard for Sprocket
Undercarriage and Frame
Maintenance Standard for Track Frame and Idler Cushion
Maintenance Standard for Idler
Maintenance Standard for Track Roller
Maintenance Standard for Rubber Shoe
Hydraulic System
Maintenance Standard for Hydraulic Tank
Maintenance Standard for Main Pump
Maintenance Standard for Swing Motor
Maintenance Standard for Travel Motor
Maintenance Standard for Control Valve
Maintenance Standard for Work Equipment and Swing PPC Valve
Maintenance Standard for Blade PPC Valve
Maintenance Standard for Boom Swing PPC Valve
Maintenance Standard for Travel PPC Valve
Maintenance Standard for Attachment PPC Valve
Maintenance Standard for Center Swivel Joint
Work Equipment
Maintenance Standard for Work Equipment Linkage
Dimensions for Arm
Dimensions for Bucket
Maintenance Standard for Boom Cylinder
Maintenance Standard for Arm Cylinder
Maintenance Standard for Bucket Cylinder
Maintenance Standard for Blade Cylinder
Maintenance Standard for Boom Swing Cylinder

Circuit Diagrams
How to Read the Codes for Electric Cable
Hydraulic Circuit Diagram
Symbols Used in Hydraulic Circuit Diagram
Hydraulic Circuit Diagram
Hydraulic Circuit Diagram (at Boom Raise Operation)
Hydraulic Circuit Diagram (at Left Swing Operation)
Hydraulic Circuit Diagram (at Boom Raise and Left Swing Operation)
Electrical Circuit Diagram
Symbols Used in Electric Circuit Diagram

Engine 3D76E-6 workshop service repair manual