Komatsu D155AX-7 Crawler Dozer Shop Manual (SEN05653-15) (SN 90001-UP)
The Komatsu D155AX-7 Crawler Dozer is a heavy production tractor used for ripping, pushing, and final trim on big dirt and mining jobs. The Komatsu D155AX-7 Crawler Dozer Shop Manual (SEN05653-15) is what shops and field techs grab when a fault code won’t clear, a component needs rebuilding, or a major system has to come apart and go back together right. People usually want this manual when downtime is getting expensive and guessing isn’t an option anymore.
What this manual helps you do
- Trace hydraulic and drivetrain faults using step‑by‑step diagnostic trees and wiring/hydraulic diagrams.
- Check engine, powertrain, and implement systems with the right test points and service tools most dealers and mobile techs already carry.
- Follow disassembly and reassembly sequences for major components like final drives, cylinders, and pumps so parts actually fit and seal on the first try.
- Diagnose electrical and electronic control issues by following connector pinouts, signal flows, and typical failure patterns for this model.
- Verify adjustments and settings after repair so the D155AX-7 leaves the pad working safely and within spec.
Who this is for
This shop manual is aimed at field technicians, dealership or independent shop mechanics, and fleet maintenance leads responsible for repair decisions. Operators looking for daily checks and basic maintenance are usually better off with the Operation & Maintenance Manual instead of this one.
FAQ
Q: Is this a PDF I can search and print?
A: Yes, it’s a PDF, so you can search by keyword and print the pages you need for use in the field.
Q: Is it deep enough for full overhauls, or just basic service?
A: The Komatsu D155AX-7 Crawler Dozer Shop Manual walks through diagnostic procedures, disassembly sequences, and workshop-level repair tasks, not just fluid changes.
Q: How do I know it matches my exact D155AX-7 variant?
A: Check your machine’s identification plate and match it to the book reference SEN05653-15; if your dealer cites that same reference, this is the correct shop manual family.
Bottom line: if you’re repairing or rebuilding a D155AX-7, this is the right manual; if you only need operating tips and simple service intervals, keep looking for the O&M manual instead.
📘 Show Index
Komatsu D155AX-7 Crawler Dozer Shop Manual (SEN05653-15) (SN 90001-UP) Index:
- 00 Index and foreword
- Index
- Foreword, safety and general information
- Important safety notice
- How to read the shop manual
- Explanation of terms for maintenance standard
- Handling equipment of fuel system devices
- Handling of intake system parts
- Handling of hydraulic equipment
- Method of disconnecting and connecting of push-pull type coupler
- Handling of electrical equipment
- How to read electric wire code
- Precautions when performing operation
- Practical use of KOMTRAX
- Standard tightening torque table
- List of abbreviation
- Conversion table
- 01 Specification
- Table of contents
- Specifications
- Specification drawing
- Specification
- Weight table
- Table of fuel, coolant, and lubricants
- 10 Structure and function
- Table of contents
- Engine and cooling system
- Engine related parts
- VGT
- EGR system piping drawing
- EGR system circuit diagram
- EGR valve
- EGR cooler
- KCCV layout drawing
- KCCV ventilator
- KDPF
- Damper
- Cooling system
- Cooling fan pump
- Cooling fan motor
- Power train
- Power train system
- HSS system
- Overall drawing of power train unit
- Power train mount
- Layout of power train hydraulic piping
- Transmission, steering, and brake control
- Universal joint
- Torque converter and PTO
- Torque converter control valve
- Lockup clutch ECMV
- Stator clutch ECMV
- Transmission
- Transmission ECMV
- Main relief valve and torque converter relief valve
- Transmission lubrication relief valve
- Bevel gear shaft, HSS, and brake
- Brake control valve
- Brake ECMV
- Brake solenoid valve
- Sudden stop prevention valve
- Final drive
- Undercarriage and frame
- Main frame
- Suspension
- Track frame and idler cushion
- Hydraulic system
- Hydraulic component layout
- Work equipment control
- Hydraulic tank
- CLSS
- Scavenging pump
- Steering lubrication pump and power train pump
- Work equipment and HSS pump
- HSS motor
- Control valve
- Quick drop valve
- Work equipment lock solenoid valve
- Hydraulic oil cooler bypass valve
- Accumulator
- Self-pressure reducing valve
- Work equipment
- Cylinder stay
- Blade
- Ripper
- Piston valve
- Cab and its attachments
- ROPS cab
- Function
- Cab mount
- Electrical system
- Engine control
- Engine control system
- Palm command control system
- System operating lamp function
- Battery disconnect switch function
- Machine monitor system
- KOMTRAX system
- System component parts
- Sensor
- 20 Standard value tables
- Table of contents
- Standard service value table
- Standard value table for engine
- Standard value table for machine
- Standard value table for electrical system
- 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
- Testing engine speed
- Testing boost pressure
- Testing exhaust gas temperature
- Testing exhaust gas color
- Adjusting valve clearance
- Measuring compression pressure
- Testing blowby pressure
- Testing engine oil pressure
- Testing EGR valve and VGT driving oil pressure
- Measuring fuel pressure
- Testing fuel return rate and leakage
- Bleeding air from fuel system
- Testing fuel circuit for leakage
- Handling cylinder cutout mode operation
- Handling no-injection cranking operation
- Replacing belt for alternator and air conditioner compressor, adjusting belt tension
- Adjusting fuel control dial and decelerator pedal
- Procedures for cleaning fuel doser
- Writing compensation values at replacement of injector and engine controller
- Power train
- Testing power train oil pressure
- Adjusting transmission output shaft speed sensor (replacement procedure)
- Simple test procedure for brake performance
- Adjusting brake pedal
- Adjusting parking brake lever
- Retrieval of disabled machine by using brake release device
- Undercarriage and frame
- Adjusting idler clearance
- Testing and adjusting track tension
- Hydraulic system
- Releasing remaining pressure in work equipment cylinder
- Testing and adjusting work equipment and HSS oil pressures
- Bleeding air from work equipment and HSS pump
- Testing source pressure of control circuit
- Testing work equipment lock solenoid valve output pressure
- Isolating the parts causing hydraulic drift in blade and ripper
- Checking fan speed
- Testing fan circuit oil pressure
- Bleeding air from fan pump
- Testing internal oil leakage of work equipment cylinder
- Bleeding air from work equipment cylinders
- Emergency operating method when work equipment has trouble
- Testing ripper pin puller solenoid valve output pressure
- Work equipment
- Adjusting work equipment lock lever
- Adjusting blade
- Testing and adjusting play of blade electric lever
- Cab and its attachments
- Electrical system
- Special functions of machine monitor
- Angle adjustment of rear view camera
- Handling voltage circuit of engine controller
- Handling battery disconnect switch
- Testing diodes
- Pm clinic
- Pm Clinic service
- Check sheet
- 40 Troubleshooting
- Table of contents
- Related information on troubleshooting
- Troubleshooting points
- Sequence of events in troubleshooting
- Checks before troubleshooting
- Inspection procedure before troubleshooting
- Preparation for troubleshooting of electrical system
- Classification and procedures for troubleshooting
- Symptom and troubleshooting numbers
- Information in troubleshooting table
- Connector/electrical wiring connection table
- Layout of connectors
- Connector contact identification
- T-branch box and T-branch adapter table
- Fuse location table
- Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement
- Preparation of dummy temperature sensor (for KDOC and KDPF temperature sensors)
- Preparation of short circuit electrical connector (for failure codes [CA1883] and [CA3135])
- Failure codes 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 [15SJL1]
- Failure code [15SJLH]
- Failure code [1800MW]
- Failure code [2300NR]
- Failure code [2301L1]
- Failure code [2301LH]
- Failure code [2302L1]
- Failure code [2302LH]
- Failure code [879AKA]
- Failure code [879AKB]
- Failure code [879BKA]
- Failure code [879BKB]
- Failure code [879CKA]
- Failure code [879CKB]
- Failure code [879DKZ]
- Failure code [879EMC]
- Failure code [879FMC]
- Failure code [879GKX]
- Failure code [989L00]
- Failure code [989M00]
- Failure code [989N00]
- Failure code [A1U0N3]
- Failure code [A1U0N4]
- Failure code [AA10NX]
- Failure code [AB00KE]
- Failure code [B@BAZG]
- Failure code [B@BCNS]
- Failure code [B@BCZK]
- Failure code [B@CENS]
- Failure code [B@HANS]
- 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 [CA239]
- 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 [CA343]
- Failure code [CA351]
- Failure code [CA352]
- Failure code [CA356]
- Failure code [CA357]
- Failure code [CA386]
- Failure code [CA441]
- Failure code [CA442]
- Failure code [CA449]
- Failure code [CA451]
- Failure code [CA452]
- Failure code [CA515]
- Failure code [CA516]
- Failure code [CA553]
- Failure code [CA555]
- Failure code [CA556]
- Failure code [CA559]
- Failure code [CA595]
- Failure code [CA687]
- Failure code [CA689]
- Failure code [CA691]
- Failure code [CA692]
- Failure code [CA697]
- Failure code [CA698]
- Failure code [CA731]
- Failure code [CA778]
- Failure code [CA1117]
- Failure code [CA1664]
- Failure code [CA1691]
- Failure code [CA1695]
- Failure code [CA1696]
- Failure code [CA1843]
- Failure code [CA1844]
- Failure code [CA1879]
- Failure code [CA1881]
- Failure code [CA1883]
- Failure code [CA1921]
- Failure code [CA1922]
- Failure code [CA1923]
- Failure code [CA1924]
- Failure code [CA1925]
- Failure code [CA1927]
- Failure code [CA1928]
- Failure code [CA1942]
- Failure code [CA1963]
- Failure code [CA1977]
- Failure code [CA1993]
- Failure code [CA2185]
- Failure code [CA2186]
- Failure code [CA2249]
- Failure code [CA2265]
- Failure code [CA2266]
- Failure code [CA2271]
- Failure code [CA2272]
- Failure code [CA2349]
- Failure code [CA2353]
- Failure code [CA2357]
- Failure code [CA2381]
- Failure code [CA2382]
- Failure code [CA2383]
- Failure code [CA2386]
- Failure code [CA2387]
- Failure code [CA2555]
- Failure code [CA2556]
- Failure code [CA2637]
- Failure code [CA2639]
- Failure code [CA2732]
- Failure code [CA2733]
- Failure code [CA2741]
- Failure code [CA2765]
- Failure code [CA2878]
- Failure code [CA2881]
- Failure code [CA3133]
- Failure code [CA3134]
- Failure code [CA3135]
- Failure code [CA3167]
- Failure code [CA3251]
- Failure code [CA3253]
- Failure code [CA3254]
- Failure code [CA3255]
- Failure code [CA3256]
- Failure code [CA3311]
- Failure code [CA3312]
- Failure code [CA3313]
- Failure code [CA3314]
- Failure code [CA3315]
- Failure code [CA3316]
- Failure code [CA3317]
- Failure code [CA3318]
- Failure code [CA3319]
- Failure code [CA3321]
- Failure code [CA3322]
- Failure code [CA3419]
- Failure code [CA3421]
- Failure code [D130KA]
- Failure code [D130KB]
- Failure code [D190KA]
- Failure code [D190KB]
- Failure code [D19JKZ]
- Failure code [D811MC]
- Failure code [D862KA]
- Failure code [D8ALKA]
- Failure code [D8ALKB]
- Failure code [D8AQKR]
- Failure code [DAF0MB]
- Failure code [DAF0MC]
- Failure code [DAF8KB]
- Failure code [DAF9KQ]
- Failure code [DAFGMC]
- Failure code [DAFLKA]
- Failure code [DAFLKB]
- Failure code [DAFQKR]
- Failure code [DAZ9KQ]
- Failure code [DAZQKR]
- Failure code [DB2QKR]
- Failure code [DB2RKR]
- Failure code [DB90KT]
- Failure code [DB90MC]
- Failure code [DB91KK]
- Failure code [DB92KK]
- Failure code [DB95KK]
- Failure code [DB97KK]
- Failure code [DB99KQ]
- Failure code [DB9LKA]
- Failure code [DB9LKB]
- Failure code [DB9QKR]
- Failure code [DB9RKR]
- Failure code [DBE0KT]
- Failure code [DBE0MC]
- Failure code [DBE1KK]
- Failure code [DBE2KK]
- Failure code [DBE5KK]
- Failure code [DBE6KK]
- Failure code [DBE9KQ]
- Failure code [DBELKA]
- Failure code [DBELKB]
- 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 [DDDDKA]
- Failure code [DDDDKB]
- Failure code [DDDDKX]
- Failure code [DDKAKA]
- Failure code [DDKAKB]
- Failure code [DDKBKA]
- Failure code [DDKBKB]
- Failure code [DDKCL4]
- Failure code [DDKEL4]
- Failure code [DDN7L4]
- Failure code [DDN8L4]
- Failure code [DDNLKA]
- Failure code [DDNLKB]
- Failure code [DDTSL1]
- Failure code [DDTSLH]
- Failure code [DFA4KX]
- Failure code [DFA4KZ]
- Failure code [DFA4L8]
- Failure code [DFA5KA]
- Failure code [DFA5KB]
- Failure code [DFA6KA]
- Failure code [DFA6KB]
- Failure code [DFA7KX]
- Failure code [DFA7KZ]
- Failure code [DFA7L8]
- Failure code [DFA8KA]
- Failure code [DFA8KB]
- Failure code [DFA9KA]
- Failure code [DFA9KB]
- Failure code [DFAAKX]
- Failure code [DFAAKZ]
- Failure code [DFAAL8]
- Failure code [DFABKA]
- Failure code [DFABKB]
- Failure code [DFACKA]
- Failure code [DFACKB]
- Failure code [DGS1KA]
- Failure code [DGS1KX]
- Failure code [DGT1KA]
- Failure code [DGT1KX]
- Failure code [DH21KA]
- Failure code [DH21KB]
- Failure code [DHA4KA]
- Failure code [DHT5KA]
- Failure code [DHT5KB]
- Failure code [DHT7KA]
- Failure code [DHT7KB]
- Failure code [DK10KA]
- Failure code [DK10KB]
- Failure code [DK30KA]
- Failure code [DK30KB]
- Failure code [DK30KX]
- Failure code [DK30KZ]
- Failure code [DK30L8]
- Failure code [DK31KA]
- Failure code [DK31KB]
- Failure code [DK40KA]
- Failure code [DK40KB]
- Failure code [DK55KX]
- Failure code [DK55KZ]
- Failure code [DK55L8]
- Failure code [DK56KA]
- Failure code [DK56KB]
- Failure code [DK57KA]
- Failure code [DK57KB]
- Failure code [DKH1KA]
- Failure code [DKH1KB]
- Failure code [DLM3KA]
- Failure code [DLM3MB]
- Failure code [DLT3KA]
- Failure code [DLT3KB]
- Failure code [DR21KX]
- Failure code [DR31KX]
- Failure code [DV20KB]
- Failure code [DW7BKA]
- Failure code [DW7BKB]
- Failure code [DWN1KA]
- Failure code [DWN1KB]
- Failure code [DWN1KY]
- Failure code [DWN2KA]
- Failure code [DWN2KB]
- Failure code [DWN2KY]
- Failure code [DWN3KA]
- Failure code [DWN3KB]
- Failure code [DWN3KY]
- Failure code [DWN5KA]
- Failure code [DWN5KB]
- Failure code [DWN5KY]
- Failure code [DXA2KA]
- Failure code [DXA2KB]
- Failure code [DXA2KY]
- Failure code [DXH1KA]
- Failure code [DXH1KB]
- Failure code [DXH1KY]
- 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 [DXHBKA]
- Failure code [DXHBKB]
- Failure code [DXHBKY]
- Failure code [DXHCKA]
- Failure code [DXHCKB]
- Failure code [DXHCKY]
- Failure code [DXHRKA]
- Failure code [DXHRKB]
- Failure code [DXHRKY]
- Failure code [DXHSKA]
- Failure code [DXHSKB]
- Failure code [DXHSKY]
- Failure code [DXHTKA]
- Failure code [DXHTKB]
- Failure code [DXHTKY]
- Failure code [DXHUKA]
- Failure code [DXHUKB]
- Failure code [DXHUKY]
- Failure code [DXHWKA]
- Failure code [DXHWKB]
- Failure code [DXHWKY]
- Failure code [DXHXKA]
- Failure code [DXHXKB]
- Failure code [DXHXKY]
- Failure code [DXHYKA]
- Failure code [DXHYKB]
- Failure code [DXHYKY]
- Failure code [DXHZKA]
- Failure code [DXHZKB]
- Failure code [DXHZKY]
- Failure code [DXJ4KA]
- Failure code [DXJ4KB]
- Failure code [DXJ8KA]
- Failure code [DXJ8KB]
- Failure code [DXJ8KY]
- Failure code [DXJ9KA]
- Failure code [DXJ9KB]
- Failure code [DXJ9KY]
- Failure code [DXJAKA]
- Failure code [DXJAKB]
- Failure code [DXJAKY]
- Failure code [DXJBKA]
- Failure code [DXJBKB]
- Failure code [DXJBKY]
- Troubleshooting of electrical system (E-mode)
- E-1 Engine does not start (Engine does not crank)
- E-2 Manual preheating system does not work
- E-3 Automatic preheating system does not work
- E-4 While preheating is working, preheating monitor does not light up
- E-5 When starting switch is turned to ON position, machine monitor displays nothing
- E-6 When starting switch is turned to ON position (with engine stopped), radiator coolant level monitor lights up in yellow
- E-7 Air cleaner clogging monitor lights up in yellow while engine is running
- E-8 Charge level monitor lights up in red while engine is running
- E-9 Engine coolant temperature monitor lights up in red while engine is running
- E-10 Engine oil pressure monitor lights up in red while engine is running
- E-11 Power train oil temperature monitor lights up in red while engine is running
- E-12 Hydraulic oil temperature monitor lights up in red while engine is running
- E-13 Engine coolant temperature gauge does not indicate correct temparature
- E-14 Fuel level gauge does not indicate correct level
- E-15 Power train oil temperature gauge does not indicate correct temperature
- E-16 Hydraulic oil temperature gauge does not indicate 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 displayed
- E-22 Alarm buzzer does not sound or does not stop sounding
- E-23 While starting switch is in OFF position, service meter is not displayed
- E-24 Service mode cannot be selected
- E-25 Horn does not sound
- E-26 Horn does not stop sounding
- E-27 Backup alarm does not sound
- E-28 Backup alarm does not stop sounding
- E-29 Headlamp does not light up
- E-30 Rear lamp and ripper point lamp do not light up
- E-31 No wiper operates continuously or intermittently
- E-32 Front wiper does not operate (failed continuous and intermittent operations)
- E-33 Rear wiper does not operate (failed continuous and intermittent operations)
- E-34 Left door wiper does not operate (failed continuous and intermittent operations)
- E-35 Right door wiper does not operate (failed continuous and intermittent operations)
- E-36 Front washer does not operate
- E-37 Rear washer does not operate
- E-38 Left door washer does not operate
- E-39 Right door washer does not operate
- E-40 Ripper pin puller does not work
- E-41 Fan does not rotate in reverse
- E-42 Fuel feed pump does not operate or stop automatically
- E-43 Gear cannot be shifted
- E-44 KOMTRAX system does not operate properly
- Troubleshooting of hydraulic and mechanical system (H-mode)
- Information described in troubleshooting table (H-mode)
- System chart of hydraulic and mechanical systems
- Failure mode and cause table
- H-1 Machine lacks power (insufficient drawbar pull)
- H-2 Machine does not travel (at 2nd or 3rd gear speed)
- H-3 Machine does not start at all gear speeds
- H-4 Machine travels only in one direction, either forward or in reverse
- H-5 Large time lag is in gear shifting or directional change
- H-6 Machine cannot be steered (machine does not turn to left or right)
- H-7 Steering speed or power is insufficient
- H-8 Brake does not work
- H-9 Torque converter lockup clutch does not engage
- H-10 Power train oil overheats
- H-11 Unusual noise is heard from around HSS pump or HSS motor
- H-12 All work equipment operates slowly
- H-13 All work equipment do not operate
- H-14 Blade lift speed or power is low
- H-15 Blade tilt speed or power is low
- H-16 Ripper lift speed or power is low
- H-17 Ripper tilt speed or power is low
- H-18 Hydraulic drift of lifted blade is large
- H-19 Hydraulic drift of tilted blade is large
- H-20 Hydraulic drift of lifted ripper is large
- H-21 Ripper pin puller cylinder does not operate
- H-22 Blade pitch cylinder does not operate
- H-23 Unusual noise is heard from around work equipment pump
- H-24 Fan speed is abnormal (too high or low, or stationary)
- H-25 Unusual noise is heard from around fan
- Troubleshooting of engine (S-mode)
- Information mentioned in troubleshooting table (S mode)
- S-1 When starting switch is turned to START position, engine is not cranked
- S-2 The engine cranks but exhaust smoke does not come out
- S-3 Fuel is injected but engine does not start (incomplete combustion, engine seems to start but does not)
- S-4 Engine startability is poor
- S-5 Engine does not pick up smoothly
- S-6 Engine stops during operation
- S-7 Engine runs rough or is unstable
- S-8 Engine lacks power
- S-9 KDPF gets clogged in a short time
- S-10 Engine oil consumption is excessive
- S-11 Engine oil becomes contaminated early
- S-12 Fuel consumption is excessive
- S-13 Oil is in coolant (or coolant spurts or coolant level goes down)
- S-14 Oil pressure drops
- S-15 Fuel mixes into engine oil
- S-16 Water mixes into engine oil (milky)
- S-17 Coolant temperature rises too high (overheating)
- S-18 Unusual noise is heard
- S-19 Vibration is excessive
- S-20 Air cannot be bled from fuel circuit
- S-21 Active regeneration is executed frequently
- S-22 Active regeneration takes a long time
- S-23 White smoke is exhausted during active regeneration
- 50 Disassembly and Assembly
- Table of contents
- Related information on disassembly and assembly
- How to read this manual
- Coating materials list
- Special tools list
- Sketches 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 air cleaner assembly
- Removal and installation of KDPF assembly
- Disassembly and assembly of KDPF assembly
- Removal and installation of KCCV assembly
- Removal and installation of engine assembly
- Removal and installation of engine front seal
- Removal and installation of engine rear seal
- Removal and installation of radiator assembly
- Removal and installation of aftercooler assembly
- Removal and installation of hydraulic oil cooler assembly
- Removal and installation of cooling fan drive assembly
- Removal and installation of cooling in fan motor assembly
- Removal and installation of engine hood assembly
- Removal and installation of fuel tank assembly
- Power train
- 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 transmission assembly
- Disassembly and assembly of HSS assembly
- Removal and installation of HSS motor assembly
- Removal and installation of final drive assembly
- Disassembly and assembly of final drive
- Undercarriage and frame
- Removal and installation of track frame assembly
- Removal and installation of idler assembly
- Disassembly and assembly of idler assembly
- Removal and installation of recoil spring assembly
- Disassembly and assembly of recoil spring assembly
- Removal and installation of track roller assembly
- Disassembly and assembly of track roller assembly
- Removal and installation of 1st bogie assembly
- Removal and installation of 2nd, 3rd, or 4th bogie assembly
- Disassembly and assembly of bogie assembly
- Removal and installation of carrier roller assembly
- Disassembly and assembly of carrier roller assembly
- Removal and installation of pivot shaft assembly
- Separation and connection of track shoe assembly
- Overall disassembly and assembly of track shoe assembly
- Field disassembly and assembly of one link
- Disassembly and assembly of master link
- Removal and installation of equalizer bar assembly
- Disassembly and assembly of equalizer bar bushing
- Removal and installation of segment teeth
- Hydraulic system
- Removal and installation of hydraulic tank assembly
- Removal and installation of control valve assembly
- Removal and installation of work equipment pump and HSS pump assembly
- Removal and installation of power train pump and steering lubrication pump assembly
- Removal and installation of cooling fan pump assembly
- Removal and installation of scavenging pump 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 blade assembly
- Disassembly and assembly of multi-shank ripper assembly
- Disassembly and assembly of giant ripper assembly
- Cab and its attachments
- Removal and installation of operator's cab assembly
- Removal and installation of operator's cab glass (adhesion glass)
- Removal and installation of operator's seat
- Removal and installation of seat belt
- Removal and installation of air conditioner unit assembly
- Removal and installation of air conditioner compressor assembly
- Removal and installation of air conditioner condenser assembly
- Electrical system
- Removal and installation of machine monitor assembly
- Removal and installation of engine controller assembly
- Removal and installation of power train controller assembly
- Removal and installation of work equipment controller assembly
- Removal and installation of mass air flow and temperature sensor
- Removal and installation of KOMTRAX terminal
- 60 Maintenance standard
- Table of contents
- Engine and cooling system
- Engine mount
- Damper
- Cooling system
- Cooling fan pump
- Cooling fan motor
- Power train
- Power train mount
- Universal joint
- Torque converter and PTO
- Torque converter control valve
- Lockup clutch ECMV
- Stator cluch ECMV
- Transmission
- Transmission ECMV
- Main relief valve and torque converter relief valve
- Transmission lubrication relief valve
- Bevel gear shaft, HSS, and brake
- Brake control valve
- Brake ECMV
- Brake solenoid valve
- Sudden stop prevention valve
- Final drive
- Sprocket
- Full-scale drawing of sprocket tooth profile
- Undercarriage and frame
- Main frame
- Suspension
- Track frame and idler cushion
- Idler
- Track roller
- Carrier roller
- Track shoe
- Hydraulic system
- Hydraulic tank
- Scavenging pump
- Steering lubrication pump and power train pump
- Work equipment and HSS pump
- PC-EPC valve
- HSS motor
- Control valve
- Quick drop valve
- Self-pressure reducing valve
- Work equipment
- Cylinder stay
- Blade
- Cutting edge and end bit
- Ripper
- Blade lift cylinder
- Blade tilt cylinder
- Ripper lift cylinder
- Ripper tilt cylinder
- Cab and its attachments
- 80 Appendix
- Table of contents
- Air conditioner components
- Precautions for refrigerant
- Air conditioner component
- Configuration and function of refrigeration cycle
- Outline of refrigeration cycle
- Air conditioner unit
- Air conditioner controller
- Compressor
- Condenser
- Receiver drier
- Sunlight sensor
- Outer temperature sensor (outside air temperature sensor)
- Procedure for testing and troubleshooting
- Circuit diagram and arrangement of connector pins
- System diagram
- Parts and connectors layout
- Testing air leakage (duct)
- Testing with self-diagnosis function
- Testing vent (mode) changeover
- Testing FRESH/RECIRC air changeover
- Testing sunlight sensor
- Testing (dual) pressure switch for refrigerant
- Testing relays
- Troubleshooting chart 1
- Troubleshooting chart 2
- Information in troubleshooting table
- Failure code list related to air conditioner
- Failure code [879AKA] A/C Inner Sensor Open Circuit
- Failure code [879AKB] A/C Inner Sensor Short Circuit
- Failure code [879BKA] A/C Outer Sensor Open Circuit
- Failure code [879BKB] A/C Outer Sensor Short Circuit
- Failure code [879CKA] Ventilating Sensor Open Circuit
- Failure code [879CKB] Ventilating Sensor Short Circuit
- Failure code [879DKZ] Sunlight Sensor Open or Short Circuit
- Failure code [879EMC] Ventilation Damper Abnormality
- Failure code [879FMC] Air Mix Damper Abnormality
- Failure code [879GKX] Refrigerant Abnormality
- A-1 Troubleshooting for power supply system (Air conditioner does not operate)
- A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled)
- A-3 Troubleshooting for blower motor system (No air comes out or air flow is abnormal)
- A-4 Troubleshooting for FRESH/RECIRC air changeover
- Troubleshooting with gauge pressure
- Connection of service tool
- Precautions for disconnecting and connecting refrigerant piping
- Handling of compressor oil
- 90 Drawings
- Table of contents
- Hydraulic circuit diagram
- Symbols in hydraulic circuit diagram
- Power train hydraulic circuit diagram
- Hydraulic circuit diagram
- Electric circuit diagram
- Symbols in electric circuit diagram
- Electrical circuit diagram
- Air conditioner electrical circuit diagram
- Wiring harness diagram
- INDEX
Komatsu
