The Komatsu HM400-2R Articulated Dump Truck is a production truck, moving heavy loads in quarries, large construction sites, and mining support work. People who reach for the Komatsu HM400-2R Articulated Dump Truck Shop Manual (SEN03042-20) are usually shop mechanics, field techs, and trainers trying to fix real faults, not just do daily checks. They’re typically chasing hydraulic issues, driveline problems, or electrical faults that basic operation manuals don’t touch. If you’re trying to actually tear down, inspect, and reassemble major components, you’re looking in the right direction.
What this manual helps you do
- Trace hydraulic and steering faults using the kind of step‑by‑step diagnostic flow you’d expect in a shop manual for a mid-size articulated dump truck.
- Check engine, transmission, and brake systems with guided test procedures and inspection points that most shops rely on for rebuild decisions.
- Follow disassembly and reassembly sequences for major components so you don’t miss hidden fasteners, seals, or alignment steps students often overlook.
- Diagnose electrical and monitoring system issues using wiring information, connector callouts, and logic that usually ties back to fault indications in the cab.
- Verify adjustments and post-repair checks so the truck goes back to work safely and doesn’t bounce right back to the bay with the same complaint.
Who this is for
This shop manual is aimed at field technicians, dealership or fleet shop mechanics, and instructors training new techs on workshop-level repairs. If you’re just an operator wanting basic controls and daily service points, you’d be better off with the Operation and Maintenance manual instead of this one.
FAQ
Q: Is this a PDF I can download and search?
A: Yes, this is a digital PDF manual you can download, search by keyword, and print selected pages for use in the shop.
Q: Does it go deep enough for full component repairs and rebuilds?
A: Yes, the Komatsu HM400-2R Articulated Dump Truck Shop Manual walks through diagnostic procedures, disassembly sequences, and reference torque tables used during workshop-level repairs.
Q: How do I know if it matches my exact HM400-2R machine?
A: This manual is identified as SEN03042-20; you should match that book number against your machine documentation or dealer information to confirm coverage for your specific serial range or variant.
If you’re responsible for repairing or teaching repairs on the HM400-2R, this is more or less the right book; if you only need operating tips or basic maintenance, keep looking for the operation/maintenance manual 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
- 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
- Specification drawings
- Specifications
- Weight table
- Fuel, coolant and lubricants
- 10 Structure, function and maintenance standard
- Engine and cooling system
- Radiator, oil cooler, aftercooler
- Output shaft
- Power train, Part 1
- Power train skeleton
- Torque converter and transmission hydraulic piping
- Brake cooling oil control valve (BCV)
- Power train pump
- Torque converter
- Transmission
- Transmission control valve
- ECMV
- Main relief, torque converter relief valve
- Power train, Part 2
- Drive shaft
- Axle
- Differential
- Limited slip differential
- Final drive
- Steering system
- Brake system
- Brake piping
- Brake valve
- Accumulator charge valve
- Accumulator
- Slack adjuster
- Brake
- Proportional reducing valve
- Brake system tank
- Parking brake
- Parking brake caliper
- Spring cylinder
- Parking brake solenoid
- Undercarriage and frame
- Suspension
- Suspension cylinder
- Oscillation hitch
- Hydraulic system
- Steering, hoist hydraulic piping diagram
- Dump body control
- Hydraulic tank and filter
- Flow amp valve
- Steering valve
- Steering cylinder
- Hoist valve
- EPC valve
- Pilot check valve
- Hoist cylinder
- Hydraulic pump
- Cab and its attachments
- ROPS cab
- Cab tilt
- Air conditioner
- Rear view monitor
- Controller related
- Electrical system, Part 1
- Electrical system, Part 2
- Automatic shift control system
- Transmission controller
- Retarder control system
- Auto emergency steering system
- Dump control lever
- Electrical system, Part 3
- Payload meter (Card type)
- Electrical system, Part 4
- Sensors, switches
- KOMTRAX terminal system (if equipped)
- 20 Standard value table
- Standard service value table
- Standard value table for engine
- Standard value table for chassis
- 30 Testing and adjusting
- Testing and adjusting, Part 1
- Precautions before work
- Tools for testing, adjusting, and troubleshooting
- Sketches of special tools
- Measuring 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 and leakage amount
- Bleeding air from fuel circuit
- Testing the fuel circuit for leakage
- Testing and adjusting fan belt tension
- Testing and adjusting alternator belt tension
- Testing and adjusting air conditioner compressor belt tension
- Adjusting the shims in the body mount
- Testing and adjusting, Part 2
- Testing torque converter stall speed
- Testing power train oil pressure
- Testing and adjusting of differential lock oil pressure (differential lock spec.)
- Adjusting transmission speed sensor
- Testing and adjusting brake oil pressure
- Testing of accumulator nitrogen gas pressure and procedure for charging accumulator with nitrogen gas
- Testing brake performance
- Releasing remaining pressure in brake circuit
- Bleeding air from brake circuit
- Testing wear of wheel brake disc
- Testing the parking brake pad wear
- Emergency release of the parking brake
- Testing and adjusting steering circuit oil pressure
- Testing and adjusting suspension cylinder
- Method of tilting cab up
- Testing and adjusting dump circuit oil pressure
- Adjusting body positioner sensor
- Adjusting length of spring in body heating spherical joint
- Adjustment of tilt lock lever of steering wheel
- Handling of voltage circuit of engine controller
- Adjusting transmission controller
- Method for emergency escape at electrical system failure
- Testing and adjusting, Part 3
- Setting and adjusting various equipments
- Special function of machine monitor
- How to start operation of KOMTRAX terminal
- Lamp display of KOMTRAX terminal
- Pm Clinic check sheet
- 40 Troubleshooting
- Failure code table and fuse locations
- Failure codes table
- Fuse locations
- General information on troubleshooting
- Precautions before work
- Points to remember when performing troubleshooting
- How to proceed in troubleshooting
- Check before troubleshooting
- Checking water pump for water leakage
- Classification and procedures of troubleshooting
- Information in troubleshooting table
- Troubleshooting method for disconnecting wiring harness of pressure sensor system
- Phenomena looking like troubles and troubleshooting Nos.
- Connection table for connector pin numbers
- T- branch box and T- branch adapter table
- Troubleshooting by failure code (Display of code), Part 1
- Failure code [1500L0] Detecting dual engagement
- Failure code [15B0NX] Transmission oil filter: Clogging
- Failure code [15F0KM] R → F gear shift abuse 1
- Failure code [15F0MB] R → F gear shift abuse 2
- Failure code [15F7KM] Transmission forward clutch abuse
- Failure code [15G0MW] Reverse clutch system failure (Slip is detected)
- Failure code [15G7KM] Transmission reverse clutch abuse
- Failure code [15H0MW] Hi clutch system failure (Slip is detected)
- Failure code [15J0MW] Lo clutch system failure (Slip is detected)
- Failure code [15K0MW] 1st clutch system failure (Slip is detected)
- Failure code [15L0MW] 2nd clutch system failure (Slip is detected)
- Failure code [15M0MW] 3rd clutch system failure (Slip is detected)
- Failure code [15SBL1] Reverse clutch pressure control valve failure I
- Failure code [15SBMA] Reverse clutch pressure control valve failure II
- Failure code [15SCL1] Hi clutch pressure control valve failure I
- Failure code [15SCMA] Hi clutch pressure control valve failure II
- Failure code [15SDL1] Lo clutch pressure control valve failure I
- Failure code [15SDMA] Lo clutch pressure control valve failure II
- Troubleshooting by failure code (Display of code), Part 2
- Failure code [15SEL1] 1st clutch pressure control valve failure I
- Failure code [15SEMA] 1st clutch pressure control valve failure II
- Failure code [15SFL1] 2nd clutch pressure control valve failure I
- Failure code [15SFMA] 2nd clutch pressure control valve failure II
- Failure code [15SGL1] 3rd clutch pressure control valve failure I
- Failure code [15SGMA] 3rd clutch pressure control valve failure II
- Failure code [15SJMA] Lockup clutch pressure control valve failure II
- Failure code [15SKMA] Interaxle differential lock clutch pressure control valve failure II
- Failure code [2A62L1] Front wheel differential lock pressure control valve failure II
- Failure code [2A62LH] Front wheel differential lock pressure control valve failure I
- Failure code [2B62L1] Rear wheel differential lock pressure control valve failure II
- Failure code [2B62LH] Rear wheel differential lock pressure control valve failure I
- Failure code [2C4MNX] Retarder cooling oil filter clogging
- Failure code [2F00KM] Dragging of parking brake
- Failure code [2G42ZG] Lowering of accumulator oil pressure (front)
- Failure code [2G43ZG] Lowering of accumulator oil pressure (rear)
- Failure code [989A00] Engine overrun prevention activated
- Failure code [989D00] Rear section tipping over alarm (Raising operation on slope)
- Failure code [A570NX] Engine oil filter clogging
- Failure code [AA10NX] Air cleaner clogging
- Failure code [AB00MA] Battery charge circuit failure
- Failure code [B@BAZG] Lowering of engine oil pressure
- Failure code [B@BAZK] Lowering of engine oil level
- Failure code [B@BCNS] Engine overheat
- Failure code [B@BCZK] Lowering of coolant level
- Failure code [B@C6NS] Overheat of brake cooling oil temperature (front)
- Failure code [B@C8NS] Overheat of brake cooling oil temperature (center)
- Failure code [B@CENS] Overheat of torque converter oil temperature
- Failure code [B@JANS] Overheat of steering oil temperature
- Troubleshooting by failure code, Part 3
- Failure code [CA111] Abnormality in engine controller
- Failure code [CA115] Engine Ne or Bkup speed sensor error
- Failure code [CA122] Charge (boost) pressure sensor high error
- Failure code [CA123] Charge (boost) pressure sensor low error
- Failure code [CA131] Throttle sensor high error
- Failure code [CA132] Throttle sensor low error
- Failure code [CA135] Engine oil pressure sensor high error
- Failure code [CA141] Engine oil pressure sensor low error
- Failure code [CA144] Coolant temperature sensor high error
- Failure code [CA145] Coolant temperature sensor low error
- Failure code [CA153] Charge (boost) temperature sensor high error
- Failure code [CA154] Charge (boost) temperature sensor low error
- Failure code [CA187] Sensor power supply 2 low error
- Failure code [CA221] Atmospheric pressure sensor high error
- Failure code [CA222] Atmospheric pressure sensor low error
- Failure code [CA227] Sensor power supply 2 high error
- Failure code [CA234] Engine overspeed
- Failure code [CA238] Ne speed sensor power supply error
- Failure code [CA263] Fuel Temperature Sensor High Error
- Failure code [CA265] Fuel Temperature Sensor Low Error
- Failure code [CA271] PCV1 Short circuit
- Failure code [CA272] PCV1 Disconnection
- Failure code [CA273] PCV2 Short circuit
- Failure code [CA274] PCV2 Disconnection
- Failure code [CA322] Injector #1 open/short error
- Failure code [CA323] Injector #5 open/short error
- Failure code [CA324] Injector #3 open/short error
- Failure code [CA325] Injector #6 open/short error
- Failure code [CA331] Injector #2 open/short error
- Failure code [CA332] Injector #4 open/short error
- Failure code [CA342] Calibration code inconsistency
- Failure code [CA351] Injectors drive circuit error
- Failure code [CA352] Sensor power supply 1 low error
- Failure code [CA386] Sensor power supply 1 high error
- Troubleshooting by failure code, Part 4
- Failure code [CA431] Idle validation switch error
- Failure code [CA432] Idle validation action error
- Failure code [CA441] Battery voltage low error
- Failure code [CA442] Battery voltage high error
- Failure code [CA449] Common rail pressure high error 2
- Failure code [CA451] Common rail pressure sensor high error
- Failure code [CA452] Common rail pressure sensor low error
- Failure code [CA553] Common rail pressure high error 1
- Failure code [CA554] Common rail pressure sensor in range error
- Failure code [CA559] Supply pump pressure very low error 1
- Failure code [CA689] Engine Ne speed sensor error
- Failure code [CA731] Engine Bkup speed sensor phase error
- Failure code [CA757] All continuous data lost error
- Failure code [CA778] Engine Bkup speed sensor error
- Failure code [CA1633] KOMNET datalink timeout error
- Failure code [CA2185] Throttle sensor power supply voltage high error
- Failure code [CA2186] Throttle sensor power supply voltage low error
- Failure code [CA2249] Supply pump pressure very low error 2
- Failure code [CA2555] Intake air heater relay open circuit error
- Failure code [CA2556] Intake air heater relay short circuit error
- Troubleshooting by failure code (Display of code), Part 5
- Failure code [DAF9KM] Wrong connection of connector
- Failure code [DAFRKR] Abnormal CAN communication (machine monitor): Abnormal communication
- Failure code [DAQ0KK] Lowering of source voltage
- Failure code [DAQ0KT] Trouble in non-volatile memory
- Failure code [DAQ2KK] Trouble in solenoid power supply system
- Failure code [DAQ9KQ] Disagreement of model selection (Transmission controller)
- Failure code [DAQRKR] Abnormal CAN communication (Transmission): Abnormal communication
- Failure code [DAQRMA] Disagreement of option setting (Transmission controller)
- Failure code [DB10KT] Trouble in non-volatile memory
- Failure code [DB12KK] Trouble in solenoid power supply system
- Failure code [DB13KK] Lowering of battery direct voltage
- Failure code [DB19KQ] Disagreement of model selection (Retarder controller)
- Failure code [DB1QMA] Disagreement of option setting (Retarder controller)
- Failure code [DB1RKR] CAN communication (retarder controller): Communication disabled
- Failure code [DB2RKR] CAN communication (engine controller): Communication disabled
- Failure code [DD1ML4] Disagreement of accelerator-linked retarder switch signal
- Failure code [DDTHKA] Trouble in Hi clutch flow sensor valve
- Failure code [DDTJKA] Trouble in Lo clutch flow sensor valve
- Failure code [DDTKKA] Trouble in 1st clutch flow sensor valve
- Failure code [DDTLKA] Trouble in 2nd clutch flow sensor valve
- Failure code [DDTMKA] Trouble in 3rd clutch flow sensor valve
- Failure code [DDTNKA] Trouble in reverse clutch flow sensor valve
- Failure code [DF10KA] Input of no lever signals
- Failure code [DF10KB] Input of multiple lever signals
- Failure code [DGF1KX] Transmission oil temperature out of range
- Failure code [DGR2KZ] Ground fault in brake oil temperature sensor (rear)
- Failure code [DGR2L8] Disconnection in brake oil temperature sensor (rear)
- Failure code [DGR3KZ] Ground fault in brake oil temperature sensor (center)
- Failure code [DGR3L8] Disconnection in brake oil temperature sensor (center)
- Failure code [DGR4KZ] Ground fault in brake oil temperature sensor (front)
- Failure code [DGR4L8] Disconnection in brake oil temperature sensor (front)
- Failure code [DGR6KX] Steering oil temperature out of range
- Troubleshooting by failure code (Display of code), Part 6
- Failure code [DGT1KX] Short circuit in torque converter oil temperature sensor system
- Failure code [DHT5KX] Disconnection, ground fault, or short circuit in torque converter oil pressure sensor system
- Failure code [DHT5L6] Torque converter oil pressure sensor failure
- Failure code [DHU2KX] Accumulator oil pressure sensor (front) system failure
- Failure code [DHU3KX] Accumulator oil pressure sensor (rear) system failure
- Failure code [DJF1KA] Disconnection in fuel level sensor system
- Failure code [DK51L5] Manual retarder potentiometer and RVS failure
- Failure code [DK52KX] Dump lever potentiometer 1 failure
- Failure code [DK53L8] Dump lever potentiometer 2 failure
- Failure code [DK54KX] Body positioner sensor failure
- Failure code [DKH0KX] Pitch angle sensor signal out of range
- Failure code [DLF1KA] Disconnection in transmission input shaft speed sensor system
- Failure code [DLF1LC] Transmission input shaft speed sensor failure
- Failure code [DLF2KA] Disconnection in transmission intermediate shaft speed sensor system
- Failure code [DLF2LC] Transmission intermediate shaft speed sensor failure
- Failure code [DLF4KA] Disconnection in transmission differential speed sensor system
- Failure code [DLT3KA] Disconnection in transmission output shaft speed sensor system
- Failure code [DV00KB] Short circuit in buzzer output circuit
- Failure code [DW72KZ] Kick-out solenoid output system failure (disconnection or ground fault)
- Failure code [DW73KZ] Dump selector valve output system failure
- Failure code [DW78KZ] Rear wheel BCV command output system failure
- Failure code [DW79KZ] Front wheel BCV command output system failure
- Failure code [DX11K4] Rear wheel proportional solenoid pressure reducing valve failure 1
- Failure code [DX11KA] Disconnection in output circuit of rear wheel proportional solenoid pressure reducing valve
- Failure code [DX11KB] Ground fault in output circuit of rear wheel proportional solenoid pressure reducing valve
- Failure code [DX11KY] Hot short in output circuit of rear wheel proportional solenoid pressure reducing valve
- Failure code [DX11MA] Rear wheel proportional solenoid pressure reducing valve failure 2
- Failure code [DX12K4] Front wheel proportional solenoid pressure reducing valve failure 1
- Failure code [DX12KA] Disconnection in output circuit of front wheel proportional solenoid pressure reducing valve
- Failure code [DX12KB] Ground fault in output circuit of front wheel proportional solenoid pressure reducing valve
- Failure code [DX12KY] Hot short in output circuit of front wheel proportional solenoid pressure reducing valve
- Failure code [DX12MA] Front wheel proportional solenoid pressure reducing valve failure 2
- Troubleshooting by failure code (Display of code), Part 7
- Failure code [DX13KA] Disconnection in output circuit of dump EPC valve
- Failure code [DX13KB] Ground fault in output circuit of dump EPC valve
- Failure code [DX13KY] Hot short in output circuit of dump EPC valve
- Failure code [DX14KZ] Rear wheel differential lock command output system failure
- Failure code [DX15KZ] Front wheel differential lock command output system failure
- Failure code [DXH0KA] Disconnection in output circuit of interaxle differential lock clutch solenoid
- Failure code [DXH0KB] Ground fault in output circuit of interaxle differential lock clutch solenoid
- Failure code [DXH0KY] Hot short in output circuit of interaxle differential lock clutch solenoid
- Failure code [DXH1KA] Disconnection in output circuit of lockup clutch solenoid
- Failure code [DXH1KB] Ground fault in output circuit of lockup clutch solenoid
- Failure code [DXH1KY] Hot short in output circuit of lockup clutch solenoid
- Failure code [DXH2KA] Disconnection in output circuit of Hi clutch ECMV solenoid
- Failure code [DXH2KB] Ground fault in output circuit of Hi clutch ECMV solenoid
- Failure code [DXH2KY] Hot short in output circuit of Hi clutch ECMV solenoid
- Failure code [DXH3KA] Disconnection in output circuit of Lo clutch ECMV solenoid
- Failure code [DXH3KB] Ground fault in output circuit of Lo clutch ECMV solenoid
- Failure code [DXH3KY] Hot short in output circuit of Lo clutch ECMV solenoid
- Failure code [DXH4KA] Disconnection in output circuit of 1st clutch ECMV solenoid
- Failure code [DXH4KB] Ground fault in output circuit of 1st clutch ECMV solenoid
- Failure code [DXH4KY] Hot short in output circuit of 1st clutch ECMV solenoid
- Troubleshooting by failure code (Display of code), Part 8
- Failure code [DXH5KA] Disconnection in output circuit of 2nd clutch ECMV solenoid
- Failure code [DXH5KB] Ground fault in output circuit of 2nd clutch ECMV solenoid
- Failure code [DXH5KY] Hot short in output circuit of 2nd clutch ECMV solenoid
- Failure code [DXH6KA] Disconnection in output circuit of 3rd clutch ECMV solenoid
- Failure code [DXH6KB] Ground fault in output circuit of 3rd clutch ECMV solenoid
- Failure code [DXH6KY] Hot short in output circuit of 3rd clutch ECMV solenoid
- Failure code [DXH7KA] Disconnection in output circuit of Reverse clutch ECMV solenoid
- Failure code [DXH7KB] Ground fault in output circuit of Reverse clutch ECMV solenoid
- Failure code [DXH7KY] Hot short in output circuit of Reverse clutch ECMV solenoid
- Troubleshooting of electrical system(E-mode)
- Before troubleshooting for electrical system
- Information in troubleshooting table
- E-1 Engine does not start
- E-2 Auto preheater does not operate
- E-3 When starting switch is turned ON, machine monitor displays nothing
- E-4 When starting switch is turned OFF, machine monitor cannot be operated
- E-5 Alarm buzzer does not sound
- E-6 Machine monitor does not normally display gauges, caution lamps, and character display section
- E-7 Display of character display section cannot be changed
- E-8 Power mode selection function does not operate normally
- E-9 AISS function does not operate normally
- E-10 Right and left differential lock function does not operate normally (Differential lock-up specification)
- E-11 Interaxle differential lock-up function does not operate normally
- E-12 Display of seat belt caution lamp is abnormal
- E-13 Both turn signal lamps and hazard lamps do not operate normally
- E-14 Night lighting is abnormal
- E-15 Backup lamp and backup buzzer operate abnormally
- E-16 Emergency steering system does not operate
- E-17 Indication of the fuel gauge is abnormal
- E-18 Dump lever does not operate normally
- E-19 KOMTRAX system does not operate normally
- E-20 Electric priming pump does not operate or does not stop automatically
- E-21 Air conditioner does not operate normally
- Troubleshooting of hydraulic and mechanical system (H-mode)
- Information in troubleshooting table
- H-1 Machine does not start
- H-2 Travel is not smooth (Machine hunts)
- H-3 Lockup is not reset
- H-4 Start shock and gear shift shock are abnormally large
- H-5 Gear is not shifted up
- H-6 Travel speed or power is low
- H-7 Start and gearshift time lag is large
- H-8 Torque converter oil temperature is high
- H-9 Torque converter oil temperature is low
- H-10 Front brake does not work fully
- H-11 Center brake does not work fully
- H-12 Rear brake does not work fully
- H-13 Steering wheel is heavy
- H-14 Steering wheel does not move
- H-15 Steering wheel waggle
- H-16 Dump body raising speed is low
- H-17 Dump body does not move
- H-18 Hydraulic drift of dump body is large
- 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
- Precautions before work
- How to read this manual
- Coating materials list
- Special tool list
- Sketches of special tools
- Engine and cooling system (SAA6D140E-5)
- Removal and installation of engine assembly
- Removal and installation of radiator assembly
- Removal and installation of cooling assembly
- Removal and installation of aftercooler assembly
- Removal and installation of output shaft assembly
- Disassembly and assembly of output shaft assembly
- Engine (SAA6D140E-5)
- Removal and installation of fuel supply pump assembly
- Removal and installation of cylinder head assembly
- Removal and installation of fuel injector assembly
- Removal and installation of engine front seal
- Removal and installation of engine rear seal
- Replacement procedure of exhaust pipe fire prevention cover
- Power train, Part 1
- Removal and installation of transmission and front differential assembly
- Disconnection and coupling of front differential and transmission
- Disassembly and assembly of torque converter assembly
- Disassembly and assembly of transmission assembly
- Power train, Part 2 (Differential)
- Disassembly and assembly of front differential assembly
- Removal and installation of center differential assembly
- Disassembly and assembly of center differential assembly
- Removal and installation of rear differential assembly
- Disassembly and assembly of rear differential assembly
- Power train, Part 3 (Final drive, brake, axle)
- Removal and installation of front final drive and brake assembly
- Disassembly and assembly of front final drive and brake assembly
- Removal and installation of center final drive and brake assembly
- Disassembly and assembly of center final drive and brake assembly
- Removal and installation of rear final drive and brake assembly
- Disassembly and assembly of rear final drive and brake assembly
- Removal and installation of center axle assembly
- Removal and installation of rear axle assembly
- Undercarriage and frame
- Removal and installation of front suspension cylinder assembly
- Removal and installation of rear suspension cylinder assembly
- Removal and installation of equalizer bar assembly
- Removal and installation of front wheel assembly
- Removal and installation of rear front wheel assembly
- Removal and installation of rear rear wheel assembly
- Removal and installation of hitch frame assembly
- Disassembly and assembly of hitch frame
- Removal and installation of body assembly
- Hydraulic system
- Disassembly and assembly of steering valve
- Removal and installation of flow amplifier valve assembly
- Removal and installation of hoist valve assembly
- Disassembly and assembly of hoist valve assembly
- Disassembly and assembly of steering cylinder assembly
- Disassembly and assembly of hoist cylinder assembly
- Cab and its attachments
- Removal and installation of operator's cab
- Removal and installation of operator's cab glass (Stuck glass)
- Disassembly and assembly of operator's seat assembly (If equipped)
- Electrical system
- Removal and installation of air conditioner unit assembly
- Removal and installation of engine controller
- Removal and installation of retarder controller
- Removal and installation of transmission controller assembly
- 90 Diagrams and drawings
- Hydraulic diagrams and drawings
- Power train hydraulic circuit diagram
- Steering and hoist hydraulic circuit diagram
- Brake hydraulic circuit diagram
- Brake cooling hydraulic circuit diagram
- Differential lock hydraulic circuit diagram
- Electrical diagrams and drawings
- Electrical circuit diagram for inside cab (1/4)
- Electrical circuit diagram for inside cab (2/4)
- Electrical circuit diagram for inside cab (3/4)
- Electrical circuit diagram for inside cab (4/4)
- Electrical circuit diagram for outside cab (1/3)
- Electrical circuit diagram for outside cab (2/3)
- Electrical circuit diagram for outside cab (3/3)
- Electrical circuit diagram for payload meter
- Connectors table and arrangement drawing HM400-2R
Komatsu
