The Komatsu D275A-6 Crawler Dozer is a heavy production dozer used for ripping, pushing big cuts, and stockpile work in mines, quarries, and large earthmoving jobs. People who usually reach for the Komatsu D275A-6 Crawler Dozer Shop Manual (SEN06879-09) are shop mechanics, field techs, and owners trying to avoid dealer labor rates. They’re normally looking for proper repair sequences, test points, and adjustment procedures so they don’t break expensive components guessing their way through.
What this manual helps you do
- Trace hydraulic issues in the blade, ripper, and steering circuits using factory test points and flow/pressure check procedures.
- Diagnose engine, powertrain, and steering problems using the kind of troubleshooting trees and checks most dealers rely on.
- Follow teardown and reassembly steps for major components like the final drives, transmission, and cylinders so parts go back together correctly.
- Check and adjust linkages, brakes, and undercarriage components to fix poor tracking, weak braking, or uneven wear.
- Handle electrical faults by following wiring information and test procedures for sensors, switches, and control circuits.
Who this is for
This shop manual is aimed at field techs, independent shops, and fleet mechanics who actually turn wrenches on a D275A-6. If you’re just operating the machine or only need daily/weekly service intervals, you’d be better off with the Operation & Maintenance manual instead of this one.
FAQ
Q: Is this a searchable PDF I can print from?
A: Yes, it’s a PDF you can view on a computer or tablet, search by keyword, and print pages you want in the shop.
Q: Is this deep enough for full rebuilds, or just basic maintenance?
A: The Komatsu D275A-6 Crawler Dozer Shop Manual walks through diagnostic procedures, disassembly sequences, and workshop-level repair methods, not just routine service.
Q: How do I know if it matches my exact D275A-6 variant?
A: You’ll want to match your machine’s identification with the SEN06879-09 reference; if your plate or dealer info points to that book number, you’re in the right place.
Bottom line: if you’re repairing or rebuilding a D275A-6 and want dealer-level guidance in your own shop, this is the manual you want; if you only need basic operation and simple service, keep looking for the O&M book instead.
📘 Show Index
Table of Contents:
- 00 Index and Foreword
- Index
- Abbreviation List
- 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
- How to Disconnect and Connect Type 1 Push-Pull Type Coupler
- How to Disconnect and Connect Type 2 Push-Pull Type Coupler
- How to Disconnect and Connect Type 3 Push-Pull Type Coupler
- Precautions for Disconnection and Connection of Connectors
- How to Disconnect and Connect Deutsch Connector
- How to Disconnect and Connect Slide Lock Type Connector
- How to Disconnect and Connect Connector with Lock to Pull
- How to Disconnect and Connect Connector with Lock to Push
- How to Disconnect and Connect Connector with Housing to Rotate
- How to Read the Codes for Electric Cable
- Explanation of Terms for Maintenance Standard
- Standard Tightening Torque Table
- Conversion Table
- 01 Specifications
- Table of Contents
- Specifications
- Specification Drawing
- Specification Drawing: D275A-6
- Specifications
- Weight Table
- Fuel, Coolant, Lubricant
- How to Use Fuel, Coolant and Lubricants by Ambient Temperature
- 10 Structure and Function
- Table of Contents
- Boot-up System
- Battery Disconnect Switch
- Layout Drawing of Battery Disconnect Switch
- Function of Battery Disconnect Switch
- Engine System
- Layout Drawing of Engine System
- Engine Control System
- Layout Drawing of Engine Control System
- System Diagram of Engine Control
- Function of Engine Control System
- Component Parts of Engine System
- Damper
- Turbocharger
- EGR System
- EGR Valve
- EGR Cooler
- CRI System
- Deceleration Potentiometer
- Cooling System
- Layout Drawing of Cooling System
- Specifications of Cooling System
- Component Parts of Cooling System
- Cooling Fan Pump
- Cooling Fan Motor
- Control System
- Layout Drawing of Control System
- Machine Monitor System
- System Diagram of Machine Monitor System
- Function of Machine Monitor System
- Component Parts of Control System
- Machine Monitor
- KOMTRAX Terminal
- Electric Heater Control
- Preheating System
- External Power Supply Engine Preheater
- Combustion-Type Preheater
- Power Train Controller
- Engine Controller
- Hydraulic System
- Layout Drawing of Hydraulic System
- CLSS
- Structure of CLSS
- Function of CLSS
- Component Parts of Hydraulic System
- Hydraulic Tank
- Work Equipment Pump
- LS Valve
- Variable Throttle Valve
- Transmission Lubrication Pump and Power Train Pump
- Control Valve
- Power Train System
- Layout Drawing of Power Train System
- Operation of Power Train System
- Transmission, Steering, and Brake Control
- Layout Drawing of Transmission, Steering, and Brake Control System
- Function of Transmission, Steering, and Brake Control System
- Palm Command Control System
- Palm Command Control System Diagram
- Centralized Pressure Pickup Port
- Layout Drawing of Centralized Pressure Pickup Port
- Function of Centralized Pressure Pickup Port
- Component Parts of Power Train System
- Universal Joint
- Power Train Mount
- Torque Converter and PTO
- Transmission
- Transmission ECMV
- Main Relief Valve and Torque Converter Relief Valve
- Transmission Lubrication Relief Valve
- Bevel Gear, Steering Clutch, and Brake
- Steering Control Valve
- Steering Clutch ECMV
- Brake
- Final Drive
- Scavenging Pump
- PCCS Lever
- PPC Lock Valve
- Work Equipment System
- Work Equipment Control
- Layout Drawing of Work Equipment Control
- Layout Drawing of Front Work Equipment
- Layout Drawing of Variable Giant Ripper
- Layout Drawing of Variable Multi-Shank Ripper
- Shoe Slip Control System
- Function of Shoes Slip Control System
- Component Parts of Work Equipment System
- Self-Pressure Reducing Valve
- Pilot Circuit Accumulator
- Quick Drop Valve
- Piston Valve
- PPC Valve
- Pin Puller Switch
- Undercarriage and Frame
- Main Frame
- Suspension
- Structure of Suspension
- Function of Suspension
- Track Frame and Idler Cushion
- Structure of Track Frame and Idler Cushion
- Specifications of Track Frame and Idler Cushion
- Function of Track Frame and Idler Cushion
- Work Equipment
- Structure of Front Work Equipment
- Structure of Cylinder Stay
- Structure of Variable Giant Ripper
- Structure of Variable Multi-Shank Ripper
- CAB Related Parts
- ROPS
- Structure of ROPS
- Function of ROPS
- CAB
- CAB Mount
- 20 Standard Value Table
- Table of Contents
- Standard Value Table for Engine
- Standard Value Table for Engine: D275A-6
- Standard Value Table for Machine
- Standard Value Table for Machine: D275A-6
- Machine Posture and Procedures to Measure Performance
- 30 Testing and Adjusting
- Table of Contents
- Related Information on Testing and Adjusting
- Tools for Testing and Adjusting
- Sketch of Tools for Testing and Adjusting
- Engine and Cooling System
- Examine Engine Speed
- How to Examine Engine Speed
- Examine Boost Pressure
- How to Examine Boost Pressure on Machine Monitor
- How to Examine Boost Pressure by Testing Tool
- Examine Exhaust Gas Temperature
- How to Examine Exhaust Temperature by Testing Tools
- Examine Exhaust Gas Color
- How to Examine Exhaust Gas Color with the Handy Smoke Checker
- How to Examine Exhaust Gas Color with Smoke Meter
- Examine and Adjust Valve Clearance
- How to Examine and Adjust Valve Clearance
- Examine Compression Pressure
- How to Examine Compression Pressure
- Examine Blowby Pressure
- How to Examine Blowby Pressure
- Examine Engine Oil Pressure
- How to Examine Engine Oil Pressure on Machine Monitor
- How to Examine Engine Oil Pressure by Testing Tool
- Examine EGR Valve and VGT Oil Pressure
- How to Examine EGR Valve and VGT Oil Pressure
- Examine Fuel Pressure
- How to Examine Fuel Pressure
- Examine Fuel Return Rate and Leakage
- How to Examine Fuel Return Rate and Leakage
- Bleed Air from Fuel System
- How to Bleed Air from Fuel System
- Examine Fuel Circuit for Leakage
- How to Examine Fuel System for Leakage
- Handle Cylinder Cut-out Mode Operation
- Handle No-Injection Cranking Operation
- Examine and Adjust Alternator Belt Tension
- How to Examine Alternator Belt Tension
- How to Adjust Alternator Belt Tension
- Examine and Adjust Air Conditioner Compressor Belt Tension
- How to Examine Air Conditioner Compressor Belt Tension
- How to Adjust Air Conditioner Compressor Belt Tension
- Adjust Decelerator Pedal
- How to Adjust Decelerator Pedal
- Power Train
- Examine Power Train Oil Pressure
- How to Examine Power Train Oil Pressure
- Adjust Transmission Output Shaft Speed Sensor
- How to Adjust Transmission Output Shaft Speed Sensor
- Examine Brake Performance Simply
- How to Examine Brake Performance Simply
- Examine and Adjust Brake Pedal
- How to Examine Brake Pedal
- How to Adjust Brake Pedal
- Adjust Parking Brake Lever
- How to Adjust Parking Brake Lever
- Release Parking Brake and Move Machine
- Release Parking Brake and Move Machine (Hydraulic Type)
- Release Parking Brake and Move Machine (Electric Type)
- Adjust PCCS Lever Console Position
- How to Adjust PCCS Lever Console Position
- Undercarriage and Frame
- Examine and Adjust Track Tension
- How to Examine Track Tension
- How to Adjust Track Tension
- Hydraulic System
- Release Remained Pressure in Hydraulic Circuit
- How to Release Remained Pressure in Hydraulic System
- Examine and Adjust Work Equipment Oil Pressure
- How to Examine Work Equipment Oil Pressure
- How to Adjust Work Equipment Oil Pressure
- Examine Oil Pressure of Control Circuit
- How to Examine Control Circuit Oil Pressure
- Examine PPC Valve Outlet Pressure
- How to Examine PPC Valve Outlet Pressure
- Adjust Play of PPC Valve
- How to Adjust Play of PPC Valve
- Examine Ripper Pin Puller Solenoid Valve Outlet Pressure
- How to Examine Ripper Pin Puller Solenoid Valve Outlet Pressure
- Examine Cooling Fan Speed
- How to Examine Cooling Fan Speed
- Examine Cooling Fan Circuit Oil Pressure
- How to Examine Cooling Fan Circuit Oil Pressure
- Bleed Air in Cooling Fan Pump
- How to Bleed Air in Cooling Fan Pump
- Examine Parts Which Cause Hydraulic Drift of Work Equipment
- How to Examine Parts Which Cause Hydraulic Drift of Blade Lift Cylinder
- How to Examine the Parts Which Cause Hydraulic Drift of Blade Tilt Cylinder
- How to Examine the Parts Which Cause Hydraulic Drift of Ripper Lift Cylinder
- Examine Oil Leakage from Work Equipment Cylinder
- How to Examine Oil Leakage from Work Equipment Cylinder
- Bleed Air from Work Equipment Cylinders
- How to Bleed Air from Work Equipment Cylinder
- Adjust Ripper Control Lever Position
- How to Adjust Ripper Control Lever Position
- Work Equipment
- Adjust Work Equipment Lock Lever
- How to Adjust Work Equipment Lock Lever
- Adjust Blade
- CAB Related Parts
- Examine and Adjust Operator Cab
- How to Examine Operator Cab
- How to Adjust Operator Cab
- Adjust Play of Operator Seat
- How to Adjust Play of Operator Seat
- Electrical System
- Set and Operate Machine Monitor
- Operator Mode
- Function to Show Technician Identification Status Screen
- Function to Show Operator Identification Input Screen
- Examine Function by LCD (Liquid Crystal Display)
- Examine Function of Service Meter
- How to Set Usage Limitation and Change Maintenance Password
- Service Mode
- How to Operate Service Mode
- How to See Pre-defined Monitoring Information
- How to Examine Self-Define Monitor Information
- Abnormality Record Menu
- How to See Maintenance Record
- Maintenance Mode Setting
- How to Set Phone Number Entry
- Default Menu
- Diagnostic Tests Menu
- Adjustment Menu
- KOMTRAX Settings Menu
- How to Show Service Message
- How to Start Up KOMTRAX Terminal (Machine with KOMTRAX Terminal)
- How to Stop Use of KOMTRAX Terminal (Machine with KOMTRAX Terminal)
- Handle Voltage Circuit of Engine Controller
- Handle Battery Disconnect Switch (Machine with KOMTRAX Terminal)
- Examine Diodes
- How to Examine Diodes by Digital Tester
- How to Examine Diodes by Analog Tester
- Pm Clinic
- Pm Clinic Service
- Pm Clinic Check Sheet: D275A-6
- Pm Clinic Check Sheet for Undercarriage: D275A-6
- 40 Troubleshooting
- Table of Contents
- 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
- How to Drain Water and Sediment from Fuel Tank
- How to Examine Water Separator, Drain Water and Sediment
- How to Examine Additional Water Separator and Drain Water and Sediment
- Examine Fuel Main Filter
- Examine Water Pump for Leakage
- How to Examine Oil Level in Hydraulic Tank, Add Oil
- How to Examine Coolant Level, Add Coolant
- How to Examine Oil Level in Engine Oil Pan, Add Oil
- How to Examine Oil Level in Power Train Case, Add Oil
- How to Examine Dust Indicator
- How to Examine Brake Operation
- How to Examine Electric Wiring
- How to Examine Fuel Level, Add Fuel
- How to Examine Lamp Lighting Status
- How to Examine Machine Monitor
- How to Remove Sediment in Engine Room
- How to Examine Operation State of Horn
- How to Examine Operation State of Backup Alarm
- How to Examine Electric Equipment
- Preparation for Troubleshooting of Electrical System
- Preparation for Troubleshooting of Machine Monitor
- Preparation for Troubleshooting of Engine Controller
- Preparation for Troubleshooting of Power Train Controller
- Preparation for Troubleshooting of KOMTRAX Terminal
- How to Disconnect and Connect Connector with a Special Lock
- Procedure for Troubleshooting
- Symptom and Troubleshooting Numbers
- Information Shown in Troubleshooting Table
- How to Diagnose Wiring Harness for Open Circuit of Pressure Sensor System
- Connector List and Layout
- Connector Contact Connection Table
- T-Branch Box and T-Branch Adapter Table
- Fuse Location Table
- Failure Code Table
- Troubleshooting by Failure Code (Display of Code)
- Failure Code [1500L0]
- Failure Code [15SAL1]
- Failure Code [15SALH]
- Failure Code [15SBL1]
- Failure Code [15SBLH]
- Failure Code [15SEL1]
- Failure Code [15SELH]
- Failure Code [15SFL1]
- Failure Code [15SFLH]
- Failure Code [15SGL1]
- Failure Code [15SGLH]
- Failure Code [1800MW]
- Failure Code [2201L1]
- Failure Code [2201LH]
- Failure Code [2202L1]
- Failure Code [2202LH]
- Failure Code [2300NR]
- Failure Code [2301L1]
- Failure Code [2301LH]
- Failure Code [2301NR]
- Failure Code [2301NT]
- Failure Code [2302L1]
- Failure Code [2302LH]
- Failure Code [2302NR]
- Failure Code [2302NT]
- Failure Code [989L00]
- Failure Code [989M00]
- Failure Code [989N00]
- Failure Code [AA10NX]
- Failure Code [AB00KE]
- Failure Code [B@BAZG]
- Failure Code [B@BCNS]
- Failure Code [B@BCQA]
- Failure Code [B@BCZK]
- Failure Code [B@CENS]
- Failure Code [B@HANS]
- Failure Code [CA111]
- Failure Code [CA115]
- Failure Code [CA122]
- Failure Code [CA123]
- Failure Code [CA131]
- Failure Code [CA132]
- Failure Code [CA135]
- Failure Code [CA141]
- Failure Code [CA144]
- Failure Code [CA145]
- Failure Code [CA153]
- Failure Code [CA154]
- Failure Code [CA187]
- Failure Code [CA221]
- Failure Code [CA222]
- Failure Code [CA227]
- Failure Code [CA234]
- Failure Code [CA238]
- Failure Code [CA263]
- Failure Code [CA265]
- Failure Code [CA271]
- Failure Code [CA272]
- Failure Code [CA273]
- Failure Code [CA274]
- Failure Code [CA322]
- Failure Code [CA323]
- Failure Code [CA324]
- Failure Code [CA325]
- Failure Code [CA331]
- Failure Code [CA332]
- Failure Code [CA342]
- Failure Code [CA351]
- Failure Code [CA352]
- Failure Code [CA386]
- Failure Code [CA441]
- Failure Code [CA442]
- Failure Code [CA449]
- Failure Code [CA451]
- Failure Code [CA452]
- Failure Code [CA553]
- Failure Code [CA554]
- Failure Code [CA559]
- Failure Code [CA689]
- Failure Code [CA731]
- Failure Code [CA757]
- Failure Code [CA778]
- Failure Code [CA1228]
- Failure Code [CA1625]
- Failure Code [CA1626]
- Failure Code [CA1627]
- Failure Code [CA1628]
- Failure Code [CA1629]
- Failure Code [CA1631]
- Failure Code [CA1632]
- Failure Code [CA1633]
- Failure Code [CA1642]
- Failure Code [CA1653]
- Failure Code [CA2185]
- Failure Code [CA2186]
- Failure Code [CA2249]
- Failure Code [CA2271]
- Failure Code [CA2272]
- Failure Code [CA2351]
- Failure Code [CA2352]
- Failure Code [CA2555]
- Failure Code [CA2556]
- Failure Code [D130KA]
- Failure Code [D130KB]
- Failure Code [D190KA]
- Failure Code [D190KB]
- Failure Code [D19JKZ]
- Failure Code [D811MC]
- Failure Code [D862KA]
- Failure Code [D8AQKR]
- Failure Code [DAF0MB]
- Failure Code [DAF0MC]
- Failure Code [DAF9KQ]
- Failure Code [DAFGMC]
- Failure Code [DAFQKR]
- Failure Code [DB2QKR]
- Failure Code [DBE0KT]
- Failure Code [DBE0MC]
- Failure Code [DBE1KK]
- Failure Code [DBE2KK]
- Failure Code [DBE5KK]
- Failure Code [DBE6KK]
- Failure Code [DBE7KK]
- Failure Code [DBE9KQ]
- Failure Code [DBEQKR]
- Failure Code [DBERKR]
- Failure Code [DD12KA]
- Failure Code [DD12KB]
- Failure Code [DD13KA]
- Failure Code [DD13KB]
- Failure Code [DD14KA]
- Failure Code [DD14KB]
- Failure Code [DDNLKA]
- Failure Code [DDNLKB]
- Failure Code [DGS1KA]
- Failure Code [DGS1KX]
- Failure Code [DGT1KA]
- Failure Code [DGT1KX]
- Failure Code [DH21KA]
- Failure Code [DH21KY]
- Failure Code [DHA4KA]
- Failure Code [DK10KA]
- Failure Code [DK10KB]
- Failure Code [DK30KA]
- Failure Code [DK30KX]
- Failure Code [DK30KY]
- Failure Code [DK30KZ]
- Failure Code [DK30L8]
- Failure Code [DK31KA]
- Failure Code [DK31KY]
- Failure Code [DK40KA]
- Failure Code [DK40KY]
- Failure Code [DK55KX]
- Failure Code [DK55KZ]
- Failure Code [DK55L8]
- Failure Code [DK56KA]
- Failure Code [DK56KY]
- Failure Code [DK57KA]
- Failure Code [DK57KY]
- Failure Code [DK60KA]
- Failure Code [DK60KY]
- Failure Code [DKH1KA]
- Failure Code [DKH1KB]
- Failure Code [DLM3KA]
- Failure Code [DLM3MB]
- Failure Code [DLT3KA]
- Failure Code [DLT3KB]
- Failure Code [DV20KB]
- Failure Code [DW7BKA]
- Failure Code [DW7BKB]
- Failure Code [DWN3KA]
- Failure Code [DWN3KB]
- Failure Code [DWN3KY]
- Failure Code [DWN5KA]
- Failure Code [DWN5KB]
- Failure Code [DWN5KY]
- Failure Code [DXH4KA]
- Failure Code [DXH4KB]
- Failure Code [DXH4KY]
- Failure Code [DXH5KA]
- Failure Code [DXH5KB]
- Failure Code [DXH5KY]
- Failure Code [DXH6KA]
- Failure Code [DXH6KB]
- Failure Code [DXH6KY]
- Failure Code [DXH7KA]
- Failure Code [DXH7KB]
- Failure Code [DXH7KY]
- Failure Code [DXH8KA]
- Failure Code [DXH8KB]
- Failure Code [DXH8KY]
- Failure Code [DXH9KA]
- Failure Code [DXH9KB]
- Failure Code [DXH9KY]
- Failure Code [DXHAKA]
- Failure Code [DXHAKB]
- Failure Code [DXHAKY]
- Failure Code [DXHBKA]
- Failure Code [DXHBKB]
- Failure Code [DXHBKY]
- Failure Code [DXHCKA]
- Failure Code [DXHCKB]
- Failure Code [DXHCKY]
- Troubleshooting of Electrical System (E-Mode)
- E-1 Engine Does Not Start (Engine Does Not Crank)
- E-2 Manual Preheating System Does Not Operate
- E-3 Automatic Preheating System Does Not Operate
- E-4 While Preheating is in Operation, Preheating Monitor Does Not Come On
- E-5 When Starting Switch is Turned to ON Position, Machine Monitor Shows Nothing
- E-6 While Starting Switch is Turned to ON Position (with Engine Stopped), Radiator Coolant Level Monitor Comes On in Yellow
- E-7 Air Cleaner Clogging Monitor Comes On in Yellow While Engine is in Operation
- E-8 Charge Level Monitor Comes On in Red While Engine is in Operation
- E-9 Engine Coolant Temperature Monitor Comes On in Red While Engine is in Operation
- E-10 Engine Oil Pressure Monitor Comes on in Red While Engine is in Operation
- E-11 Power Train Oil Temperature Monitor Comes On in Red While Engine is in Operation
- E-12 Hydraulic Oil Temperature Monitor Comes On in Red While Engine is in Operation
- E-13 Engine Coolant Temperature Gauge Does Not Show Correct Temperature
- E-14 Fuel Gauge Does Not Show Normally
- E-15 Power Train Oil Temperature Gauge Does Not Show Correct Temperature
- E-16 Hydraulic Oil Temperature Gauge Does Not Show Correct Temperature
- E-17 Operation Mode Does Not Change
- E-18 Gear Shift Mode Does Not Change
- E-19 Operating Customize Switch Does Not Display Customize Screen
- E-20 Modifying Setting on Customize Screen Does Not Change Setting of Machine
- E-21 Some Areas of Machine Monitor Screen are Not Shown
- E-22 Alarm Buzzer Does Not Sound or Cannot be Stopped
- E-23 Service Meter is Not Shown, While Starting Switch is in OFF Position
- E-24 Machine Does Not Change to Service Mode
- E-25 Horn Does Not Sound
- E-26 Horn Does Not Stop
- E-27 Backup Alarm Does Not Sound
- E-28 Backup Alarm Does Not Stop
- E-29 Headlamp Does Not Come On
- E-30 Rear Lamp and Ripper Point Lamp Do Not Come On
- E-31 No Wiper Operates
- E-32 Front Wiper Does Not Operate
- E-33 Rear Wiper Does Not Operate
- E-34 Left Door Wiper Does Not Operate
- E-35 Right Door Wiper Does Not Operate
- E-36 Fan Does Not Rotate in Reverse
- E-37 Gear Cannot be Shifted
- E-38 Front Washer Does Not Operate
- E-39 Rear Washer Does Not Operate
- E-40 Left Door Washer Does Not Operate
- E-41 Right Door Washer Does Not Operate
- E-42 Ripper Pin Puller Does Not Work
- E-43 KOMTRAX System Does Not Operate Correctly
- Troubleshooting for Hydraulic and Mechanical Systems (H Mode)
- Information Shown in Troubleshooting Table (H-Mode)
- H-1 Machine Power is Not Sufficient (Not Sufficient Drawbar Pull)
- H-2 Machine Does Not Travel (at 2nd or 3rd Gear Speed)
- H-3 Machine Does Not Move Off at All Gear Speeds
- H-4 Machine Travels Only in One Direction, Forward or in Reverse
- H-5 Large Time Lag is in Gear Shifting or Directional Change
- H-6 Brake Does Not Work
- H-7 Power Train Oil Overheats
- H-8 Machine Cannot be Steered (Machine Does Not Turn LEFT or RIGHT)
- H-9 Machine Can Turn (Steering) Only in One Direction
- H-10 Machine Overturns (Steering)
- H-11 All Work Equipment Operate Slowly
- H-12 All Work Equipment Do Not Operate
- H-13 Blade Lift Speed or Power is Low
- H-14 Blade Tilt Speed or Power is Low
- H-15 Ripper Lift Speed or Power is Low
- H-16 Ripper Tilt Speed is Low or Power is Low
- H-17 Hydraulic Drift of Blade Lift is Large
- H-18 Hydraulic Drift of Tilted Blade is Large
- H-19 Hydraulic Drift of Lifted Ripper is Large
- H-20 Ripper Pin Puller Cylinder Does Not Operate (Machine with Giant Ripper)
- H-21 Unusual Noise is Heard from Around Work Equipment and Cooling Fan Pump or Control Valve
- H-22 Fan Speed is Abnormal (Too High or Low, or Does Not Rotate)
- Troubleshooting of Engine (S-Mode)
- Information Shown in Troubleshooting Table (S-Mode)
- S-1 Engine Does Not Rotate
- S-2 Engine Rotates but No Exhaust Gas Comes Out
- S-3 Exhaust Gas Comes but Engine Does Not Start
- S-4 Engine Startability is Unsatisfactory
- S-5 Engine Does Not Pick Up Smoothly
- S-6 Engine Stops During Operation
- S-7 Engine Runs Rough or is Not Stable
- S-8 Engine Lacks Power
- S-9 Oil Consumption is Excessive (or Exhaust Gas is Blue)
- S-10 Oil Becomes Dirty Quickly
- S-11 Fuel Consumption is Excessive
- S-12 Oil is in Coolant (or Coolant Spurts Back or Coolant Level Goes Down)
- S-13 Oil Pressure Drops
- S-14 Oil Level Increases (Entry of Coolant or Fuel)
- S-15 Coolant Temperature Becomes Too High (Overheating)
- S-16 Abnormal Noise is Made
- S-17 Vibration is Excessive
- S-18 Air Cannot be Bled from Fuel Circuit
- 50 Disassembly and Assembly
- Table of Contents
- Abbreviation List
- Related Information on Disassembly and Assembly
- How to Read This Manual
- Coating Materials List
- Special Tool List
- Sketches of Special Tools
- Engine and Cooling System
- Remove and Install Supply Pump Assembly
- How to Remove Supply Pump Assembly
- How to Install Supply Pump Assembly
- Remove and Install Injector Assembly
- How to Remove Injector Assembly
- How to Install Injector Assembly
- Remove and Install Cylinder Head Assembly
- How to Remove Cylinder Head Assembly
- How to Install Cylinder Head Assembly
- Remove and Install Common Rail
- How to Remove Common Rail
- How to Install Common Rail
- Remove and Install Radiator Guard Assembly
- How to Remove Radiator Guard Assembly
- How to Install Radiator Guard Assembly
- Remove and Install Radiator Assembly
- How to Remove Radiator Assembly
- How to Install Radiator Assembly
- Remove and Install Radiator Tube
- How to Remove Radiator Tube
- How to Install Radiator Tube
- Remove and Install Hydraulic Oil Cooler Assembly
- How to Remove Hydraulic Oil Cooler Assembly
- How to Install Hydraulic Oil Cooler Assembly
- Remove and Install Aftercooler Assembly
- How to Remove Aftercooler Assembly
- How to Install Aftercooler Assembly
- Remove and Install Fan Drive Assembly
- How to Remove Fan Drive Assembly
- How to Install Fan Drive Assembly
- Remove and Install Fan Motor Assembly
- How to Remove Fan Motor Assembly
- How to Install Fan Motor Assembly
- Remove and Install Engine Assembly
- How to Remove Engine Assembly
- How to Install Engine Assembly
- Remove and Install Engine Front Oil Seal
- How to Remove Engine Front Oil Seal
- How to Install Engine Front Oil Seal
- Remove and Install Engine Rear Oil Seal
- How to Remove Engine Rear Oil Seal
- How to Install Engine Rear Oil Seal
- Remove and Install Engine Hood Assembly
- How to Remove Engine Hood Assembly
- How to Install Engine Hood Assembly
- Remove and Install Fuel Tank Assembly
- How to Remove Fuel Tank Assembly
- How to Install Fuel Tank Assembly
- Remove and Install Air Conditioner Condenser Assembly
- How to Remove Air Conditioner Condenser Assembly
- How to Install Air Conditioner Condenser Assembly
- Power Train
- Remove and Install Damper Assembly
- How to Remove Damper Assembly
- How to Install Damper Assembly
- Disassemble and Assemble Damper Assembly
- How to Disassemble Damper Assembly
- How to Assemble Damper Assembly
- Remove and Install Power Train Unit Assembly
- How to Remove Power Train Unit Assembly
- How to Install Power Train Unit Assembly
- Disconnect and Connect Power Train Unit Assembly
- How to Disconnect Power Train Unit Assembly
- How to Connect Power Train Unit Assembly
- Disassemble and Assemble PTO Assembly
- How to Disassemble PTO Assembly
- How to Assemble PTO Assembly
- Disassemble and Assemble Torque Converter Assembly
- How to Disassemble Torque Converter Assembly
- How to Assemble Torque Converter Assembly
- Disassemble and Assemble Torque Flow Transmission Assembly
- How to Disassemble Torque Flow Transmission Assembly
- How to Assemble Torque Flow Transmission Assembly
- Remove and Install Final Drive Assembly
- How to Remove Final Drive Assembly
- How to Install Final Drive Assembly
- Disassemble and Assemble Final Drive Assembly
- How to Disassemble Final Drive Assembly
- How to Assemble Final Drive Assembly
- Disassemble and Assemble HSS Assembly
- How to Disassemble HSS Assembly
- How to Assemble HSS Assembly
- Undercarriage and Frame
- Remove and Install Track Frame Assembly
- How to Remove Track Frame Assembly
- How to Install Track Frame Assembly
- Remove and Install Idler Assembly (Applicable Machine: 30001 to 40000)
- How to Remove Idler Assembly (Applicable Machine: 30001 to 40000)
- How to Install Idler Assembly (Applicable Machine: 30001 to 40000)
- Disassemble and Assemble Idler Assembly
- How to Disassemble Idler Assembly
- How to Assemble Idler Assembly
- Remove and Install Idler and Idler Cushion Assembly (Applicable Machine: 30001 to 40000)
- How to Remove Idler and Idler Cushion Assembly (Applicable Machine: 30001 to 40000)
- How to Install Idler and Idler Cushion Assembly (Applicable Machine: 30001 to 40000)
- Remove and Install Recoil Spring Assembly
- How to Remove Recoil Spring Assembly
- How to Install Recoil Spring Assembly
- Disassemble and Assemble Recoil Spring Assembly
- How to Disassemble Recoil Spring Assembly
- How to Assemble Recoil Spring Assembly
- Remove and Install Track Roller Assembly (Applicable Machine: 30001 to 40000)
- How to Remove Track Roller Assembly (Applicable Machine: 30001 to 40000)
- How to Install Track Roller Assembly (Applicable Machine: 30001 to 40000)
- Disassemble and Assemble Track Roller Assembly
- How to Disassemble Track Roller Assembly
- How to Assemble Track Roller Assembly
- Remove and Install No. 1 Bogie Assembly (Applicable Machine: 30001 to 40000)
- How to Remove No.1 Bogie Assembly (Applicable Machine: 30001 to 40000)
- How to Install No. 1 Bogie Assembly (Applicable Machines: 30001 to 40000)
- Remove and Install No. 2, 3, 4 Bogie Assemblies (Applicable Machine: 30001 to 40000)
- How to Remove No. 2, 3, 4 Bogie Assemblies (Applicable Machine: 30001 to 40000)
- How to Install No. 2, 3, 4 Bogie Assemblies (Applicable Machines: 30001 to 40000)
- Disassemble and Assemble Bogie Assembly
- How to Disassemble Bogie Assembly
- How to Assemble Bogie Assembly
- Remove and Install Carrier Roller Assembly
- How to Remove Carrier Roller Assembly
- How to Install Carrier Roller Assembly
- Disassemble and Assemble Carrier Roller Assembly
- How to Disassemble Carrier Roller Assembly
- How to Assemble Carrier Roller Assembly
- Remove and Install Pivot Shaft Assembly
- How to Remove Pivot Shaft Assembly
- How to Install Pivot Shaft Assembly
- Separate and Connect Track Assembly
- How to Separate Track Assembly
- How to Install Track Assembly
- Disassemble and Assemble Track Assembly Generally
- How to Disassemble Full Track Shoe Assembly
- How to Assemble Full Track Shoe Assembly
- Remove and Install Equalizer Bar Assembly
- How to Remove Equalizer Bar Assembly
- How to Install Equalizer Bar Assembly
- Disassemble and Assemble Equalizer Bar Bushing
- How to Disassemble Equalizer Bar Bushing
- How to Assemble Equalizer Bar Bushing
- Hydraulic System
- Remove and Install Work Equipment Pump and HSS Pump Assembly
- How to Remove Work Equipment Pump and HSS Pump Assembly
- How to Install Work Equipment Pump and HSS Pump Assembly
- Remove and Install Work Equipment and HSS Charge Pump Assembly
- How to Remove Work Equipment and HSS Charge Pump Assembly
- How to Install Work Equipment and HSS Charge Pump Assembly
- Remove and Install Power Train Pump and Steering Lubrication Pump Assembly
- How to Remove Power Train Pump and Steering Lubrication Pump Assembly
- How to Install Power Train Pump and Steering Lubrication Pump Assembly
- Remove and Install HSS Motor Assembly
- How to Remove HSS Motor Assembly
- How to Install HSS Motor Assembly
- Remove and Install Cooling Fan Pump Assembly
- How to Remove Cooling Fan Pump Assembly
- How to Install Cooling Fan Pump Assembly
- Remove and Install Control Valve Assembly
- How to Remove Control Valve Assembly
- How to Install Control Valve Assembly
- Disassemble and Assemble Control Valve Assembly
- How to Disassemble Control Valve Assembly
- How to Assemble Control Valve Assembly
- Disassemble and Assemble Hydraulic Cylinder Assembly
- How to Disassemble Hydraulic Cylinder Assembly
- How to Assemble Hydraulic Cylinder Assembly
- Remove and Install Scavenging Pump Assembly
- How to Remove Scavenging Pump Assembly
- How to Install Scavenging Pump Assembly
- Work Equipment
- Remove and Install Ripper Assembly
- How to Remove Ripper Assembly
- How to Install Ripper Assembly
- Remove and Install Blade Assembly
- How to Remove Blade Assembly
- How to Install Blade Assembly
- CAB Related Parts
- Remove and Install ROPS Guard
- How to Remove ROPS Guard
- How to Install ROPS Guard
- Remove and Install Operator Cab Assembly
- How to Remove Operator Cab Assembly
- How to Install Operator Cab Assembly
- Remove and Install Operator Cab Glass (Adhered Glass)
- How to Remove Operator Cab Glass (Adhered Glass)
- How to Install Operator Cab Glass (Adhered Glass)
- Remove and Install Floor Frame Assembly
- How to Remove Floor Frame Assembly
- How to Install Floor Frame Assembly
- Disassemble and Assemble Seismic Isolation Device for Operator Seat
- How to Disassemble Seismic Isolation Operator Seat
- How to Assemble Seismic Isolation Device for Operator Seat
- Remove and Install Air Conditioner Unit Assembly
- How to Remove Air Conditioner Unit Assembly
- How to Install Air Conditioner Unit Assembly
- Electrical System
- Remove and Install Transmission Controller Assembly
- How to Remove Transmission Controller Assembly
- How to Install Transmission Controller Assembly
- Remove and Install Steering Controller Assembly
- How to Remove Steering Controller Assembly
- How to Install Steering Controller Assembly
- Remove and Install Engine Controller Assembly
- How to Remove Engine Controller Assembly
- How to Install Engine Controller Assembly
- Remove and Install Machine Monitor Assembly
- How to Remove Machine Monitor Assembly
- How to Install Machine Monitor Assembly
- Remove and Install KOMTRAX Terminal Assembly
- How to Remove KOMTRAX Terminal Assembly
- How to Install KOMTRAX Terminal Assembly
- 60 Maintenance Standard
- Table of Contents
- Engine and Cooling System
- Maintenance Standard for Engine Mount
- Maintenance Standard for Turbocharger
- Maintenance Standard for Damper
- Maintenance Standard for Cooling System
- Maintenance Standard for Cooling Fan Pump
- Maintenance Standard for Servo Valve
- Maintenance Standard for Cooling Fan Motor
- Power Train
- Maintenance Standard for Universal Joint
- Maintenance Standard for Power Train Mount
- Maintenance Standard for Torque Converter and PTO
- Maintenance Standard for Transmission
- Maintenance Standard for Power Train Pump and Steering Lubrication Pump
- Maintenance Standard for Transmission ECMV
- Maintenance Standard for Main Relief Valve and Torque Converter Relief Valve
- Maintenance Standard for Lubrication Relief Valve
- Maintenance Standard for Bevel Gear Shaft and Steering
- Maintenance Standard for Steering Control Valve
- Maintenance Standard for Steering Clutch ECMV
- Maintenance Standard for Steering Brake ECMV
- Maintenance Standard for Parking Brake Valve
- Maintenance Standard for Sudden Stop Prevention Valve
- Maintenance Standard for Final Drive
- Maintenance Standard for Sprocket for Conventional Type Track Shoes
- Maintenance Standard for Sprocket Tooth Profile Full-Scale Drawing for Conventional Type Track Shoes
- Undercarriage and Frame
- Maintenance Standard for Main Frame
- Maintenance Standard for Suspension
- Maintenance Standard for Track Frame and Idler Cushion
- Maintenance Standard for Idler
- Maintenance Standard for Track Roller Bogie
- Maintenance Standard for Track Roller for Conventional Type Track Shoes
- Maintenance Standard for Carrier Roller for Conventional Type Track Shoes
- Maintenance Standard for Conventional Type Track Shoes
- Maintenance Standard for Single Shoes
- Hydraulic System
- Maintenance Standard for Hydraulic Tank
- Maintenance Standard for Work Equipment Pump
- Maintenance Standard for Scavenging Pump
- Maintenance Standard for Control Valve
- Maintenance Standard for Self-Pressure Reducing Valve
- Maintenance Standard for Quick Drop Valve
- Work Equipment
- Maintenance Standard for Cylinder Stay
- Maintenance Standard for Front Work Equipment
- Maintenance Standard for Cutting Edge and End Bit
- Maintenance Standard for Blade Lift Cylinder
- Maintenance Standard for Blade Tilt Cylinder
- Maintenance Standard for Variable Multi-Shank Ripper
- Maintenance Standard for Variable Giant Ripper
- Maintenance Standard for Ripper Lift Cylinder
- Maintenance Standard for Ripper Tilt Cylinder
- CAB Related Parts
- Maintenance Standard for CAB Mount
- Maintenance Standard for ROPS
- 80 Appendix
- Table of Contents
- Air Conditioner System
- Precautions for Refrigerant
- Air Conditioner Component
- Specifications of Air Conditioner
- Structure and Function of Refrigeration Cycle
- Outline of Refrigeration Cycle
- Component Parts of Air Conditioner System
- Air Conditioner Unit
- Configuration Diagram of Air Conditioner Unit
- Compressor
- Structure of Compressor
- Specifications of Compressor
- Function of Compressor
- Condenser
- Structure of Condenser
- Specifications of Condenser
- Function of Condenser
- Receiver Drier
- Structure of Receiver Dryer
- Specifications of Receiver Dryer
- Function of Receiver Dryer
- Explanation of Procedure for Test of and Troubleshooting of Air Conditioner
- Circuit Diagram and Configuration of Connector Pins of Air Conditioner
- Installation Locations of Circuit Breakers
- Air Conditioner Troubleshooting Chart 1
- Air Conditioner Troubleshooting Chart 2
- Information Shown in Troubleshooting Table
- A-1 The Air Conditioner Does Not Operate (No Air Flow)
- A-1 The Air Conditioner Does Not Operate (Cooling is Not Possible)
- Connect Service Tool
- How to Connect Service Tool
- Precautions for Disconnection and Connection of Air Conditioner Piping
- Handle Compressor Oil
- 90 Circuit Diagrams
- Table of Contents
- Hydraulic Circuit Diagram
- Symbols Used in Hydraulic Circuit Diagram
- Hydraulic Circuit Diagram
- Power Train Hydraulic Circuit Diagram
- Electrical Circuit Diagram
- Symbols Used in Electric Circuit Diagram
- Electrical Circuit Diagram (1/12)
- Electrical Circuit Diagram (2/12)
- Electrical Circuit Diagram (3/12)
- Electrical Circuit Diagram (4/12)
- Electrical Circuit Diagram (5/12)
- Electrical Circuit Diagram (6/12)
- Electrical Circuit Diagram (7/12)
- Electrical Circuit Diagram (8/12)
- Electrical Circuit Diagram (9/12)
- Electrical Circuit Diagram (10/12)
- Electrical Circuit Diagram (11/12)
- Electrical Circuit Diagram (12/12)
- Index
Komatsu
