The Komatsu D275A-5R Crawler Dozer is a heavy production dozer used for ripping, pushing big cuts, and stockpile work in mines, quarries, and large earthmoving jobs. This Shop Manual is what working shops and field techs reach for when a machine is down and guessing is getting too expensive. People usually want it to trace faults properly, tear down major components in the right order, and put everything back together so it lasts.
What this manual helps you do
- Trace hydraulic issues in the D275A-5R’s blade, ripper, and steering circuits using the correct test points and flow paths.
- Diagnose engine, powertrain, and steering problems using the factory-style troubleshooting trees and symptom-based checks.
- Follow step‑by‑step disassembly and reassembly sequences for major components like final drives, transmission, and undercarriage assemblies.
- Check adjustment procedures for clutches, brakes, linkages, and controls so the dozer responds correctly under load.
- Handle workshop‑level repairs with the right tightening sequences, inspection points, and wear limits you’d expect in a dealer shop.
Who this is for
This Komatsu D275A-5R Crawler Dozer Shop Manual (SEN02158-26) is aimed at shop mechanics, field service techs, and fleet maintenance managers trying to keep repair work in‑house and save on dealer bills. It’s overkill if you’re just an operator wanting daily checks or basic maintenance; in that case you’d want the Operation & Maintenance Manual instead.
FAQ
Q: Is this a PDF I can download and search?
A: Yes, it’s a downloadable PDF you can search on-screen and print specific pages for the job.
Q: Does it go deep enough for full overhauls?
A: This kind of shop manual usually covers diagnostic procedures, teardown, inspection, and reassembly for workshop‑level repairs on the D275A-5R.
Q: How do I know if it matches my exact machine variant?
A: You’ll want to match your machine’s ID plate and serial information against the SEN02158-26 reference before you buy, or check with your Komatsu dealer.
Bottom line: If you’re repairing or rebuilding a Komatsu D275A-5R Crawler Dozer in a shop or field setting, this is the right manual; if you only need operating tips and basic service intervals, keep looking for the O&M book instead.
📘 Show Index
Table of Contents:
- 00 Index and foreword
- Index
- Composition of shop manual
- Table of contents
- Foreword and general information
- Safety notice
- How to read the shop manual
- Explanation of terms for maintenance standard
- Handling of electric equipment and hydraulic component
- Handling of connectors newly used for engines
- How to read electric wire code
- Precautions when carrying out operation
- Method of disassembling and connecting push-pull type coupler
- Standard tightening torque table
- Conversion table
- 01 Specification
- Specification and technical data
- Specefication dimension drawings
- Specifications
- Weight table
- Table of fuel, coolant and lubricants
- 10 Structure, function and maintenance standard
- Engine and cooling system
- Engine mount
- Cooling system
- Cooling fan pump
- Cooling fan motor
- Power train system, Part 1
- Power train
- Overall drawing of power train unit
- Power train hydraulic piping drawing
- Damper, universal joint
- Torque converter, PTO
- Scavenging pump
- Transmission control
- Transmission
- Tranmission ECMV
- Main relief valve and torque convertor relif valve
- Power train pump, steering lubrication pump
- Lubrication relief valve
- Power train system, Part 2
- Steering, brake control
- Bevel gear shaft, steering clutch and brake
- Steering control valve
- Steering clutch ECMV
- Steering brake ECMV
- Parking brake valve
- Sudden brake prevention valve
- Final drive
- Sprocket
- Undercarriage and frame
- Track frame
- ldler cushiion
- Idler
- Track roller
- Track roller bogie
- Carrier roller
- Track shoe
- Main frame
- Suspension
- Hydraulic system, Part 1
- Work equipment hydraulic piping diagram
- PPC control piping diagram
- Work equipment control
- Hydraulic tank
- Work equipment pump
- Hydraulic system, Part 2
- Control valve
- Operation of control valve
- Self pressure reducing valve
- Hydraulic system, Part 3
- PPC valve
- PCCS lever
- PPC lock valve
- Hydraulic cylinder
- Piston valve
- Quick drop valve
- Pin puller switch
- Pin puller solenoid valve
- Blade control knob
- Pitch, dual tilt solenoid valve
- Accumulator
- Work equipment
- Cylinder stay
- Blade
- Ripper
- Cab and its attachments
- Cab mount
- Cab
- Air conditioner
- Electrical system
- Engine control system
- CRI engine control system
- Monitor system
- Machine monitor
- Mode selection system
- Electrical equipment
- Palm command control system
- Sensors
- KOMTRAX system
- 20 Standard value table
- Standard service value table
- Standard value table for engine
- Standard value table for machine
- 30 Testing and adjusting
- Testing and adjusting, Part 1
- Tools for testing, adjusting, and troubleshooting
- Testing engine speed
- Testing intake air pressure (Boost pressure)
- Testing exhaust temperature
- Testing exhaust gas color
- Adjusting valve clearance
- Testing compression pressure
- Testing blow-by pressure
- Testing engine oil pressure
- Handling of fuel system devices
- Releasing residual pressure from fuel system
- Testing fuel pressure
- Testing fuel return rate and fuel leakage
- Bleeding air from fuel circuit
- Testing fuel circuit for leakage
- Testing and adjusting alternator belt tension
- Handling controller voltage circuit
- Testing and adjusting air conditioner compressor belt
- Testing fan speed
- Testing fan circuit oil pressure
- Bleeding air from fan pump
- Adjusting fuel control dial and decelerator pedal
- Testing and adjusting, Part 2
- Testing power train oil pressure
- Adjusting transmission speed sensor
- Simple method of testing brake performance
- Adjusting brake pedal and parking brake lever
- Adjusting PCCS lever console position
- Emergency escape method when power train has trouble
- Adjusting clearance of idler
- Inspecting wear of sprocket
- Testing and adjusting track shoe tension
- Testing and adjusting work equipment oil pressure
- Testing control circuit main pressure
- Testing PPC valve output pressure
- Adjusting play of PPC valve
- Testing outlet pressure of ripper pin puller solenoid valve
- Testing parts which cause hydraulic drift of blade and ripper
- Testing internal leakage of work equipment cylinder
- Releasing residual pressure from work equipment cylinder
- Bleeding air from work equipment cylinder
- Adjusting ripper lever position
- Adjusting work equipment lock lever
- Adjusting blade
- Testing and adjusting operator's cab
- Testing and adjusting, Part 3
- Special functions of machine monitor (EMMS)
- Testing and adjusting, Part 4
- Adjustment method when controller has been replaced
- Method of starting use of KOMTRAX terminal
- Indication by KOMTRAX terminal lamps
- Preparation work for troubleshooting for electric system
- Handling of optional devices
- Pm Clinic service
- 40 Troubleshooting
- Failure code table and fuse locations
- Failure codes table
- Fuse locations
- General information on troubleshooting
- Points to remember when troubleshooting
- Sequence of events in troubleshooting
- Check before troubleshooting
- Checking water pump for water leakage
- Classification and procedures for troubleshooting
- Contents of troubleshooting table
- Connection table for connector pin numbers
- T-branch box and T-branch adapter table
- Troubleshooting by failure and error codes, Part 1
- Failure code [1500L0] Transmission clutch dual engagement
- Failure code [15SAL1] Forward clutch oil pressure 1
- Failure code [15SALH] Forward clutch oil pressure 2
- Failure code [15SBL1] Reverse clutch oil pressure 1
- Failure code [15SBLH] Reverse clutch oil pressure 2
- Failure code [15SEL1] 1st clutch oil pressure 1
- Failure code [15SELH] 1st clutch oil pressure 2
- Failure code [15SFL1] 2nd clutch oil pressure 1
- Failure code [15SFLH] 2nd clutch oil pressure 2
- Failure code [15SGL1] 3rd clutch oil pressure 1
- Failure code [15SGLH] 3rd clutch oil pressure 2
- Failure code [2201L1] Right steering clutch oil pressure 1
- Failure code [2201LH] Right steering clutch oil pressure 2
- Failure code [2202L1] Left steering clutch oil pressure 1
- Failure code [2202LH] Left steering clutch oil pressure 2
- Failure code [2300NR] Brake thermal load
- Failure code [2301L1] Right steering brake oil pressure 1
- Failure code [2301LH] Right steering brake oil pressure 2
- Failure code [2301NR] Right steering brake thermal load
- Failure code [2302L1] Left steering brake oil pressure 1
- Failure code [2302LH] Left steering brake oil pressure 2
- Failure code [2302NR] Left steering brake thermal load
- Failure code [6001ZK] Failure code for design
- Failure code [A000NS] Engine overheat
- Failure code [AA10NX] Air cleaner clogging
- Failure code [AB00MA] Battery charge abnormal
- Failure code [B@BAZG] Eng oil press low
- Failure code [B@BAZK] Eng oil level low
- Failure code [B@BCNS] Eng coolant overheat
- Failure code [B@BCZK] Radiator coolant level low
- Failure code [B@BEBF] Water gets mixed with fuel
- Failure code [B@BFZK] Fuel level abnormal reduction
- Failure code [B@CENS] Torque converter oil overheat
- Failure code [B@CHZG] HSS charge oil pressure reduction
- Failure code [B@CHZK] Power train oil level reduction
- Failure code [B@GAZK] Battery electrolyte level reduction
- Failure code [B@HANS] Hyd oil overheat
- Failure code [B@HAZK] Hydraulic oil level reduction
- Troubleshooting by failure and error codes, Part 2
- Failure code [CA111] EMC critical internal failure
- Failure code [CA115] Eng Ne and Bkup speed sens error
- Failure code [CA122] Chg air (boost) press sensor high error
- Failure code [CA123] Chg air (boost) press sensor low error
- Failure code [CA131] Throttle sensor high error
- Failure code [CA132] Throttle sensor low error
- Failure code [CA135] End oil press sensor high error
- Failure code [CA141] Eng oil press sensor low error
- Failure code [CA144] Coolant temp sens high error
- Failure code [CA145] Coolant temp sens low error
- Failure code [CA153] Chg air (boost) temp sensor high error
- Failure code [CA154] Chg air (boost) temp sensor low error
- Failure code [CA187] Sens supply 2 volt low error
- Failure code [CA221] Ambient press sens high error
- Failure code [CA222] Ambient press sens low error
- Failure code [CA227] Sens supply 2 volt high error
- Failure code [CA234] Eng overspeed
- Failure code [CA238] Ne speed sens supply volt error
- Failure code [CA263] Fuel temp sensor high error
- Failure code [CA265] Fuel temp sensor low error
- Failure code [CA271] PCV1 short error
- Failure code [CA272] PCV1 open error
- Failure code [CA273] PCV2 short error
- Failure code [CA274] PCV2 open error
- Failure code [CA322] Inj #1 open/short error
- Failure code [CA323] Inj #5 open/short error
- Failure code [CA324] Inj #3 open/short error
- Failure code [CA325] Inj #6 open/short error
- Failure code [CA331] Inj #2 open/short error
- Failure code [CA332] Inj #4 open/short error
- Failure code [CA342] Calibration code incompatibility
- Failure code [CA351] Injectors drive circuit error
- Failure code [CA352] Sens supply 1 volt low error
- Failure code [CA386] Sens supply 1 volt high error
- Failure code [CA441] Battery voltage low error
- Failure code [CA442] Battery voltage high error
- Failure code [CA449] Rail press very high error
- Failure code [CA451] Rail press sensor high error
- Failure code [CA452] Rail press sensor low error
- Failure code [CA553] Rail press high error
- Failure code [CA554] Rail press sensor in range error
- Failure code [CA559] No-pressure feed by supply pump 1
- Failure code [CA689] Eng Ne speed sensor error
- Troubleshooting by failure and error codes, Part 3
- Failure code [CA731] Eng Bkup speed sens phase error
- Failure code [CA757] All continuous data lost error
- Failure code [CA778] Eng Bkup speed sensor error
- Failure code [CA1633] KOMNET datalink timeout error
- Failure code [CA2185] Throt sens sup volt high error
- Failure code [CA2186] Throt sens sup volt low error
- Failure code [CA2249] No-pressure feed by supply pump 2
- Failure code [CA2555] Intake air heater relay open error
- Failure code [CA2556] Intake air heater relay short error
- Failure code [D110KA] Battery relay holding disconnection
- Failure code [D110KB] Battery relay drive short circuit
- Failure code [D130KA] Neutral safety relay disconnection
- Failure code [D130KB] Neutral safety relay short circuit
- Failure code [D161KA] Back-up alarm relay disconnection
- Failure code [D161KB] Back-up alarm relay short circuit
- Failure code [D190KA] Engine controller ACC signal cut relay
- Failure code [D190KB] Engine controller ACC signal cut relay short
- Failure code [D811KR] KOMTRAX controller CAN defective communication
- Failure code [DAFRKR] Machine monitor CAN communication defective communication
- Troubleshooting by failure and error codes, Part 4
- Failure code [DAQ0KT] Transmission controller internal abnormality
- Failure code [DAQ1KK] Transmission controller main source voltage reduction
- Failure code [DAQ2KK] Transmission controller load voltage reduction
- Failure code [DAQ5KK] Transmission controller sensor 5 V power source (1) power supply source voltage reduction
- Failure code [DAQ6KK] Transmission controller sensor 24 V power supply source voltage reduction
- Failure code [DAQ7KK] Transmission controller sensor 5 V power supply source (2) power source voltage reduction
- Failure code [DAQ9KQ] Transmission controller type collation (Type select signal inconsistency)
- Failure code [DAQRKR] Transmission controller CAN defective communication (Abnormality in objective component system)
- Failure code [DAQSKR] Transmission controller S-NET defective communication (Abnormality in objective component system)
- Failure code [DB2RKR] Engine controller CAN defective communication
- Failure code [DB30KT] Steering controller abnormality in controller
- Failure code [DB31KK] Steering controller main power supply source voltage reduction
- Failure code [DB32KK] Load power source of steering controller power source voltage drop
- Failure code [DB35KK] Steering controller sensor 5 V power source (1) power source voltage drop
- Failure code [DB36KK] Steering controller sensor 24 V power supply source voltage reduction
- Failure code [DB37KK] Steering controller sensor 5 V power source (2) power source voltage drop
- Failure code [DB39KQ] Steering controller type collation (Type select signal inconsistency)
- Failure code [DB3RKR] Steering controller CAN defective communication (Abnormality in objective component system)
- Failure code [DB3SKR] Steering controller S-NET defective communication (Abnormality in objective component system)
- Failure code [DD12KA] Shift up switch disconnection
- Failure code [DD12KB] Shift up switch short circuit
- Failure code [DD13KA] Shift down switch disconnection
- Failure code [DD13KB] Shift down switch short circuit
- Failure code [DD14KA] Parking brake lever switch disconnection
- Failure code [DD14KB] Parking brake lever switch short circuit
- Failure code [DDB9L4] Reverse switch disagreement
- Failure code [DDK3L4] Forward switch disagreement
- Failure code [DDK5KA] Gearshift switch disconnection
- Failure code [DDK5KB] Gearshift switch short circuit
- Failure code [DDN7KA] Blade pitch switch disconnection
- Failure code [DDN7KB] Blade pitch switch short circuit
- Failure code [DDN9KA] Blade tilt switch disconnection
- Failure code [DDN9KB] Blade tilt switch short circuit
- Failure code [DDNBLD] Ripper lift raise oil pressure switch is kept ON for long time
- Failure code [DDNCLD] Ripper lift lower oil pressure switch is kept ON for long time
- Failure code [DDNDLD] Ripper lift tilt-in oil pressure switch is kept ON for long time
- Failure code [DDQ2KA] Parking brake lever switch disconnection
- Failure code [DDQ2KB] Parking brake lever switch short circuit
- Failure code [DDQ2L4] Parking brake lever switch disagreement
- Failure code [DDT5KA] Neutral switch disconnection
- Failure code [DDT5KB] Neutral switch short circuit
- Failure code [DDT5KQ] Lever specification selection (Model selection signal disagreement)
- Failure code [DGS1KX] Hydraulic oil temperature sensor input signal is out of normal range
- Troubleshooting by failure and error codes, Part 5
- Failure code [DGT1KA] Power train oil temp sensor disconnection
- Failure code [DGT1KX] Power train oil temp sensor out of input signal range
- Failure code [DH21KB] Work equipment pump oil pressure sensor short circuit
- Failure code [DH22KA] Work equipment pump oil pressure sensor disconnection
- Failure code [DH22KB] Work equipment pump oil pressure sensor short circuit
- Failure code [DK10KA] Fuel control dial disconnection
- Failure code [DK10KB] Fuel control dial short circuit
- Failure code [DK30KA] Steering potentiometer (1) disconnection
- Failure code [DK30KB] Steering potentiometer (1) short circuit
- Failure code [DK30KX] Steering potentiometer (1) out of input signal range
- Failure code [DK30KZ] Steering potentiometer (1) disconnection or short circuit
- Failure code [DK30L8] Steering potentiometer (1) analog signals do not agree
- Failure code [DK31KA] Steering potentiometer (2) disconnection
- Failure code [DK31KB] Steering potentiometer (2) short circuit
- Failure code [DK40KA] Brake potentiometer disconnection
- Failure code [DK40KB] Brake potentiometer short circuit
- Failure code [DK55KX] Directional potentiometer out of input signal range
- Failure code [DK55KZ] Directional potentiometer disconnection or short circuit
- Failure code [DK55L8] Directional potentiometer analog signals do not agree
- Failure code [DK56KA] F-R potentiometer (1) disconnection
- Failure code [DK56KB] F-R potentiometer (1) short circuit
- Failure code [DK57KA] F-R potentiometer (2) disconnection
- Failure code [DK57KB] F-R potentiometer (2) short circuit
- Failure code [DK60KA] Acceleration sensor disconnection
- Failure code [DK60KB] Acceleration sensor short circuit
- Failure code [DKH1KA] Pitch angle sensor disconnection
- Failure code [DKH1KB] Pitch angle sensor short circuit
- Failure code [DKH1KX] Pitch angle sensor out of input signal range
- Failure code [DLT3KA] Transmission out-speed sensor disconnection
- Failure code [DLT3KB] Transmission out-speed sensor abnormal
- Failure code [DV00KB] Caution buzzer short circuit
- Failure code [DW59KA] Blade dual selector solenoid disconnection
- Failure code [DW59KB] Blade dual selector solenoid short circuit
- Failure code [DW59KY] Blade dual selector solenoid hot short
- Failure code [DW5AKA] Blade pitch selector solenoid disconnection
- Failure code [DW5AKB] Blade pitch selector solenoid short circuit
- Failure code [DW5AKY] Blade pitch selection solenoid hot short circuit
- Troubleshooting by failure and error codes, Part 6
- Failure code [DW7BKA] Fan rev EPC disconnection
- Failure code [DW7BKB] Fan rev EPC short circuit
- Failure code [DW7BKY] Fan reverse solenoid hot short circuit
- Failure code [DWN3KA] Sudden stop prevention solenoid disconnection
- Failure code [DWN3KB] Sudden stop prevention solenoid short circuit
- Failure code [DWN3KY] Sudden stop prevention solenoid hot short circuit
- Failure code [DWN5KA] Fan pump solenoid disconnection
- Failure code [DWN5KB] Fan pump solenoid short circuit
- Failure code [DWN5KY] Fan pump solenoid hot short circuit
- Failure code [DXH1KA] Lock-up solenoid disconnection
- Failure code [DXH1KB] Lock-up solenoid short circuit
- Failure code [DXH1KY] Lock-up solenoid hot short
- Failure code [DXH4KA] 1st clutch ECMV disconnection
- Failure code [DXH4KB] 1st clutch ECMV short circuit
- Failure code [DXH4KY] 1st clutch ECMV hot short circuit
- Failure code [DXH5KA] 2nd clutch ECMV disconnection
- Failure code [DXH5KB] 2nd clutch ECMV short circuit
- Failure code [DXH5KY] 2nd clutch ECMV hot short circuit
- Failure code [DXH6KA] 3rd clutch ECMV disconnection
- Failure code [DXH6KB] 3rd clutch ECMV short circuit
- Failure code [DXH6KY] 3rd clutch ECMV hot short circuit
- Failure code [DXH7KA] Reverse clutch ECMV disconnection
- Failure code [DXH7KB] Reverse clutch ECMV short circuit
- Failure code [DXH7KY] R clutch ECMV hot short circuit
- Failure code [DXH8KA] Forward clutch ECMV disconnection
- Failure code [DXH8KB] Forward clutch ECMV short circuit
- Failure code [DXH8KY] F clutch ECMV hot short circuit
- Failure code [DXH9KA] Right steering clutch ECMV disconnection
- Failure code [DXH9KB] Right steering clutch ECMV short circuit
- Failure code [DXH9KY] Right steering clutch ECMV hot short
- Failure code [DXHAKA] Left steering clutch ECMV disconnection
- Failure code [DXHAKB] Left steering clutch ECMV short circuit
- Failure code [DXHAKY] Left steering clutch ECMV hot short
- Failure code [DXHBKA] Right brake ECMV disconnection
- Failure code [DXHBKB] Right brake ECMV short circuit
- Failure code [DXHBKY] Right brake ECMV hot short circuit
- Failure code [DXHCKA] Left brake ECMV disconnection
- Failure code [DXHCKB] Left brake ECMV short circuit
- Failure code [DXHCKY] Left brake ECMV hot short circuit
- Troubleshooting of electrical system (E-mode)
- Information in troubleshooting table
- E-1 The engine does not start
- E-2 The preheater does not operate (Manual preheating function)
- E-3 The ripper pin puller cylinder does not operate
- E-4 The machine monitor does not come on at all when the starting switch is turned ON
- E-5 When the starting switch is turned ON, the machine monitor completely remains lighted and does not go out
- E-6 When the starting switch is turned ON, the basic check items flash
- E-7 While the engine is operating, any caution item flashes
- E-8 While the engine is operating, the emergency warning item flashes
- E-9 While the preheater is operating, the preheating pilot lamp does not come on
- E-10 At the selecting time of dual tilt, the dual/single tilt selector lamp does not come on (Dual tilt-mounted machine)
- E-11 The engine coolant temperature gauge does not indicate normally
- E-12 Indication of the power train (torque converter) temperature gauge is abnormal
- E-13 The hydraulic oil temperature gauge does not indicate normally
- E-14 Indication of the fuel gauge is abnormal
- E-15 Indications of gear speed and engine speed are abnormal
- E-16 Indication of the shift mode service meter is abnormal
- E-17 The switch module cannot be operated
- E-18 The warning lamp does not flash or does not go out
- E-19 The alarm buzzer does not sound or does not stop
- E-20 Auto shift down is not possible or is not released
- E-21 The alarm buzzer cannot be cancelled
- E-22 The operator mode cannot be operated
- E-23 The service mode cannot be operated
- E-24 The back-up alarm does not sound
- E-25 The night light, the headlamp, the working lamp and the rear lamp on the panel do not come on
- E-26 The air conditioner does not operate
- E-27 KOMTRAX system does not operate normally
- E-28 Fan does not reverse
- E-29 Gear cannot be shifted
- E-30 Electric priming pump does not operate or does not stop automatically
- Troubleshooting of hydraulic and mechanical system (H-mode)
- Information in troubleshooting table
- H-1 No travel power (No drawbar pull)
- H-2 Machine does not move (At 2nd or 3rd speed)
- H-3 Machine does not move in any speed range
- H-4 Machine travels only in one direction forward or in reverse
- H-5 When gear is shifted or travel direction is changed, large time lag is made
- H-6 Steering is not possible
- H-7 Steering is possible only on one side
- H-8 Steering overrun occurs
- H-9 Brake does not work
- H-10 Overheat of power train oil temperature
- H-11 All work equipment speeds are slow
- H-12 Work equipment does not move
- H-13 Blade lift speed is slow or lacks power
- H-14 Blade tilt speed is slow or lacks power
- H-15 Ripper lift speed is slow or lacks power
- H-16 Ripper tilt speed is slow or lacks power
- H-17 Excessive hydraulic drift of blade lift
- H-18 Excessive hydraulic drift of blade tilt
- H-19 Excessive hydraulic drift of ripper lift
- H-20 Ripper pin puller cylinder does not work (Giant ripper attachment machine)
- H-21 Blade pitch does not work (Dual tilt attachment machine)
- H-22 Abnormal sound comes out from around work equipment pump
- H-23 Fan speed is abnormal (Sound and/or vibration of fan are/is abnormally large or engine overheats)
- H-24 Operator's seat isolator quakes abnormally or makes shocks (Machine with operator's seat isolator)
- Troubleshooting of engine (S-mode)
- Method of using troubleshooting chart
- S-1 Starting performance of engine is poor
- S-2 Engine does not start
- S-3 Engine does not pick up smoothly
- S-4 Engine stops during operation
- S-5 Engine does not rotate smoothly
- S-6 Engine lack output (or lacks power)
- S-7 Exhaust gas is black (incomplete combustion)
- S-8 Oil consumption is excessive (or exhaust gas is blue)
- S-9 Oil becomes dirty quickly
- S-10 Fuel consumption is excessive
- S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)
- S-12 Oil pressure drops
- S-13 Oil level rises (Entry of coolant or fuel)
- S-14 Coolant temperature becomes too high (Overheating)
- S-15 Abnormal noise is made
- S-16 Vibration is excessive
- S-17 Air cannot be bled from fuel circuit
- 50 Disassembly and assembly
- General information on disassembly and assembly
- How to read this manual
- Coating materials list
- Special tool list
- Sketchs of special tools
- Engine and cooling system
- Removal and installation of fuel supply pump assembly
- Removal and installation of fuel injector assembly
- Removal and installation of cylinder head assembly
- Removal and installation of engine front seal
- Removal and installation of engine rear seal
- Removal and installation of engine assembly
- Removal and installation of radiator assembly (including hydraulic oil cooler assembly and aftercooler assembly)
- Removal and installation of hydraulic oil cooler assembly
- Removal and installation of aftercooler assembly
- Removal and installation of radiator guard assembly
- Removal and installation of fuel tank assembly
- Removal and installation of engine hood assembly
- Removal and installation of fan drive assembly
- Removal and installation of fan motor assembly
- Power train, Part 1
- Removal and installation of damper assembly
- Disassembly and assembly of damper assembly
- Removal and installation of power train unit assembly
- Disconnection and connection of power train unit assembly
- Disassembly and assembly of PTO assembly
- Disassembly and assembly of torque converter assembly
- Disassembly and assembly of torque converter assembly (Option)
- Disassembly and assembly of TORQFLOW transmission assembly
- Power train, Part 2
- Removal and installation of scavenging pump
- Disassembly and assembly of steering case assembly
- Removal and installation of final drive assembly
- Disassembly and assembly of final drive assembly
- Undercarriage and frame, Part 1
- Removal and installation of track frame assembly
- Removal and installation of idler cushion assembly
- Removal and installation of recoil spring assembly
- Disassembly and assembly of recoil spring assembly
- Removal and installation of idler assembly
- Disassembly and assembly of idler assembly
- Removal and installation of track roller assembly
- Disassembly and assembly of track roller assembly
- Removal and installation of carrier roller assembly
- Disassembly and assembly of carrier roller assembly
- Removal and installation of 1st bogie assembly
- Removal and installation of 2nd, 3rd and 4th bogie assembly
- Disassembly and assembly of bogie assembly
- Undercarriage and frame, Part 2
- Expanding and installing track shoe assembly
- Whole disassembly and whole assembly of track shoe assembly
- Removal and installation of pivot shaft assembly
- Removal and installation of equalizer bar assembly
- Disassembly and assembly of equalizer bar bushing
- Open and close front under guard
- Open and close rear under guard
- Remove and install front under guard assembly
- Remove and install rear under guard assembly
- Hydraulic system
- Removal and installation of work equipment pump assembly
- Removal and installation of power train and steering lubricating oil pump assembly
- Removal and installation of fan pump assembly
- Removal and installation of control valve assembly
- Disassembly and assembly of work equipment control valve assembly
- Disassembly and assembly of hydraulic cylinder assembly
- Work equipment
- Removal and installation of blade assembly
- Removal and installation of blade lift cylinder assembly
- Disassembly and assembly of ripper assembly
- Cab and its attachments
- Removal and installation of ROPS guard
- Removal and installation of operator's cab assembly
- Removal and installation of operator's cab glass (Stuck glass)
- Removal and installation of air conditioner unit assembly
- Removal and installation of floor frame assembly
- Disassembly and assembly of operator's seat isolator
- Electrical system
- Removal and installation of transmission controller assembly
- Removal and installation of steering controller assembly
- Removal and installation of engine controller assembly
- Removal and installation of monitor panel assembly
- 90 Diagrams and drawings
- Hydraulic diagrams and drawings
- Hydraulic circuit diagram
- Power train hydraulic circuit diagram
- Electrical diagrams and drawings
- Electrical circuit diagram (1/13)
- Electrical circuit diagram (2/13)
- Electrical circuit diagram (3/13)
- Electrical circuit diagram (4/13)
- Electrical circuit diagram (5/13)
- Electrical circuit diagram (6/13)
- Electrical circuit diagram (7/13)
- Electrical circuit diagram (8/13)
- Electrical circuit diagram (9/13)
- Electrical circuit diagram (10/13)
- Electrical circuit diagram (11/13)
- Electrical circuit diagram (12/13)
- Electrical circuit diagram (13/13)
- Electrical circuit diagram for inside cab
- Air conditioner unit electrical circuit diagram
- Connectors table and arrangement drawing
Komatsu
