MidWestTechService, Parts and Operator's Manuals, in stock and ready to ship!
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3+

Komatsu WA200-7 Wheel Loader Service Manual

1,563 pages · Publication SEN06503-05

$159.97
Fast free USA shippingShips in 1 business daySave 10% on 2 manuals, 15% on 3 or morePay by credit or debit card or with PayPal. No PayPal account needed.
Models
WA200-7
Serial coverage
80001 and up
Manual type
Service Manual
Pages
1,563
Publication
SEN06503-05
Condition
Brand new
Komatsu WA200-7 Wheel Loader Service Manual, publication SEN06503-05

What's inside

From the manual's own table of contents: 258 sections, 558 entries. See sample pages (PDF, 863 KB)

Index and foreword
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
Specifications
Specification dimension drawing
Weight table
Table of fuel, coolant, and lubricants
Engine and cooling system
EGR system piping drawing
EGR system circuit diagram
EGR valve
Show all 258 sections
EGR cooler
KCCV layout drawing
KCCV ventilator
KDOC muffler
Damper
Cooling system
Cooling system hydraulic piping diagram
Cooling fan motor
Power train
Power train system diagram
Drive shaft
HST hydraulic piping diagram
HST pump
HST motor
Transfer
Clutch solenoid valve
Axle
Differential
Torque proportioning differential55 topics
  • Limited slip differential
  • Final drive
  • Steering system
  • Steering piping diagram
  • Orbitrol valve
  • Steering column
  • Priority valve
  • Emergency steering valve
  • Brake system
  • Brake piping diagram
  • Brake valve
  • Charge valve
  • Accumulator (for brake)
  • Slack adjuster
  • Brake
  • Parking brake control
  • Parking brake
  • Parking brake cylinder
  • Parking brake solenoid valve
  • Inching valve
  • Undercarriage and frame
  • Axle mount and center hinge pin
  • Hydraulic system
  • Hydraulic component layout
  • Work equipment control lever linkage
  • Hydraulic tank
  • Accumulator (for PPC circuit)
  • Work equipment control valve
  • PPC valve
  • Attachment EPC valve
  • Work equipment lock solenoid valve
  • ECSS valve
  • Accumulator (for ECSS)
  • 2-way restrictor valve
  • Cushion valve
  • Accumulator (for oil cooler circuit)
  • Quadruple gear pump
  • Quick coupler solenoid valve
  • Work equipment
  • Work equipment linkage
  • Bucket
  • Bucket positioner and boom kick-out
  • Cab and its attachments
  • Electrical system
  • Machine monitor system
  • Machine monitor
  • Electrical system (HST controller system)
  • System component parts
  • HST controller
  • ECSS
  • KOMTRAX system
  • Engine starting circuit
  • Engine stopping circuit
  • Preheating system
  • Automatic preheating system
Manual preheating system
Engine output limit function
Automatic warm-up function
Parking brake control system
Multi-function mono-lever
Sensor
Standard value table
Standard value table for engine
Standard value table for machine
Related information on testing and adjusting
Tools for testing and adjusting
Testing and adjusting engine speed
Testing exhaust gas temperature
Steering system40 topics
  • Testing cooling fan pump circuit oil pressure
  • Testing work equipment PPC oil pressure
  • Testing and adjusting work equipment oil pressure
  • Bleeding air from each part
  • Releasing remaining pressure in hydraulic circuit
  • Testing and adjusting bucket positioner
  • Testing and adjusting boom kick-out switch
  • Checking the proximity switch working pilot lamp
  • Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor
  • Special functions of machine monitor
  • KOMTRAX terminal start-up procedure
  • Lamp indication of KOMTRAX terminal
  • Handling voltage circuit of controller
  • Test diodes
  • Pm Clinic
  • Pm Clinic service
  • Related information on troubleshooting
  • Points to remember when performing troubleshooting
  • How to proceed in troubleshooting
  • Checks before troubleshooting
  • Check procedure before troubleshooting
  • Preparation for troubleshooting of electrical system
  • Classification and procedures of troubleshooting
  • Symptom and troubleshooting No
  • Information described in troubleshooting table
  • Procedure for troubleshooting of open circuit in wiring harness of pressure sensor system
  • Connector list and layout
  • Connection table of connector by No. of pins
  • T-box and T-adapter list
  • Fuse location table
  • Failure code list
  • Troubleshooting by failure code (Display of code)
  • Failure code [2F00MB] Malfunction of Parking Brake
  • Failure code [2G42ZG] Accumulator Oil Pressure Low (Front)
  • Failure code [2G43ZG] Accumulator Oil Pressure Low (Rear)
  • Failure code [6091NX] HST Filter Clogging
  • Failure code [7RHYKA] Open Circuit of Fan Motor EPC Solenoid Output
  • Failure code [7RHYKB] Ground Fault of Fan Motor EPC Solenoid Output
  • Failure code [7RHYKY] Hot Short of Fan Motor EPC Solenoid Output
  • Failure code [989FN1] Travel Speed Overrun Alarm
Failure code [AB00L6] Discharge of Alternator R Terminal1 topic
  • Battery Charging
Failure code [B@BAZG] Engine Oil Pressure Low
Failure code [B@BCNS] Engine Water Overheat
Failure code [B@BCZK] Engine Coolant Level Low
Failure code [B@C6NS] Front Brake Oil Temperature Overheat (This Alarm)
Failure code [B@CRNS] HST Oil Temperature Overheat
Failure code [CA115] Eng Ne and Bkup Speed Sens Error
Failure code [CA122] Charge Air Pressure Sensor High Error
Failure code [CA123] Charge Air Pressure Sensor Low Error
Failure code [CA131] Throttle Sensor High Error
Failure code [CA132] Throttle Sensor Low Error
Failure code [CA144] Coolant Temperature Sensor High Error
Failure code [CA145] Coolant Temperature Sensor Low Error
Failure code [CA153] Charge Air Temperature Sensor High Error
Failure code [CA154] Chg Air Temp Sensor Low Error
Failure code [CA187] Sensor 2 Supply Voltage Low Error
Failure code [CA221] Ambient Pressure Sensor High Error
Failure code [CA222] Ambient Pressure Sensor Low Error
Failure code [CA227] Sensor 2 Supply Voltage High Error
Failure code [CA234] Engine Overspeed
Failure code [CA238] Ne Speed Sensor Supply Volt Error
Failure code [CA239] Ne Speed Sens Supply Volt High Error
Failure code [CA271] IMV/PCV1 Short Error
Failure code [CA272] IMV/PCV1 Open Error
Failure code [CA322] Injector #1 (L#1) Open/Short Error
Failure code [CA324] Injector #3 (L#3) Open/Short Error
Failure code [CA331] Injector #2 (L#2) Open/Short Error
Failure code [CA332] Injector #4 (L#4) Open/Short Error
Failure code [CA343] Engine Controller Internal Failure
Failure code [CA351] Injectors Drive Circuit Error
Failure code [CA352] Sensor 1 Supply Voltage Low Error
Failure code [CA356] Mass Air Flow Sensor High Error
Failure code [CA357] Mass Air Flow Sensor Low Error
Failure code [CA386] Sensor 1 Supply Voltage High Error
Failure code [CA428] Water in Fuel Sensor High Error
Failure code [CA429] Water in Fuel Sensor Low Error
Failure code [CA431] Idle Validation Sw Error
Failure code [CA432] Idle Validation Process Error
Failure code [CA435] Engine Oil Pressure Sw 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] Common Rail Pressure Sensor High Error
Failure code [CA452] Common Rail Pressure Sensor Low Error
Failure code [CA466] KVGT Motor Driver Position Error
Failure code [CA488] Chg Air Temp High Torque Derate
Failure code [CA515] Rail Pressure Sensor Sup Volt High Error
Failure code [CA516] Rail Pressure Sensor Sup Volt Low Error
Failure code [CA553] Common Rail Pressure High Error 1
Failure code [CA555] Crankcase Press High Error 1
Failure code [CA556] Crankcase Press High Error 2
Failure code [CA559] Rail Press Low Error 1
Failure code [CA689] Engine Ne Speed Sensor Error
Failure code [CA691] Intake Air Temp Sens High Error56 topics
  • Failure code [CA692] Intake Air Temp Sens Low Error
  • Failure code [CA697] ECM Internal Temperature Sensor High Error
  • Failure code [CA698] EMC Internal Temperature Sensor Low Error
  • Failure code [CA731] Engine Bkup Speed Sensor Phase Error
  • Failure code [CA778] Engine Bkup Speed Sensor Error
  • Failure code [CA1117] Persistent Data Lost Error
  • Failure code [CA1695] Sensor 5 Supply Voltage High Error
  • Failure code [CA1696] Sensor 5 Supply Voltage Low Error
  • Failure code [CA1843] Crankcase Press Sens High Error
  • Failure code [CA1844] Crankcase Press Sens Low Error
  • Failure code [CA1896] EGR Valve Stuck Error
  • Failure code [CA1942] Crankcase Press Sens In-Range Error
  • Failure code [CA1961] EGR Motor Driver IC Over Temp Error
  • Failure code [CA2185] Throttle Sensor Supply Voltage High Error
  • Failure code [CA2186] Throttle Sensor Supply Voltage Low Error
  • Failure code [CA2249] Rail Press Low Error 2
  • Failure code [CA2272] EGR Valve Position Sensor Low Error
  • Failure code [CA2311] IMV Solenoid Error
  • Failure code [CA2349] EGR Valve Solenoid Open Circuit Error
  • Failure code [CA2353] EGR Valve Solenoid Short Circuit Error
  • Failure code [CA2357] EGR Valve Servo Error
  • Failure code [CA2373] Exhaust Manifold Pressure Sensor High Error
  • Failure code [CA2374] Exhaust Manifold Pressure Sensor Low Error
  • Failure code [CA2375] EGR Orifice Temperature Sensor High Error
  • Failure code [CA2376] EGR Orifice Temperature Sensor Low Error
  • Failure code [CA2554] Exhaust Manifold Pressure Sensor In-Range Error
  • Failure code [CA2555] Grid Heater Relay Voltage Low Error
  • Failure code [CA2556] Grid Heater Relay Voltage High Error
  • Failure code [CA2961] EGR Orifice Temperature High Error 1
  • Failure code [CA2973] Charge Air Pressure Sensor In-Range Error
  • Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error
  • Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error
  • Failure code [CA3724] EGR/KVGT Motor Driver Power Low Error
  • Failure code [CA3741] Common Rail Pressure Valve Trip Error
  • Failure code [CA3918] KVGT Stuck Error
  • Failure code [CA3919] KVGT Motor Driver IC Over Temperature Error
  • Failure code [CA3921] KVGT Servo Error 2
  • Failure code [CA3922] KVGT Motor Driver Open Error
  • Failure code [CA3923] KVGT Motor Driver Short Error
  • Failure code [D110L4] Disconnection or Short to Ground of Battery Relay Signal Line
  • Failure code [D160KA] Disconnection of Backup Lamp Relay Output
  • Failure code [D160KB] Ground Fault of Backup Lamp Relay Output
  • Failure code [D160KY] Hot Short of Backup Lamp Relay Output
  • Failure code [D191KA] Disconnection of Neutral Output Relay
  • Failure code [D191KB] Ground Fault of Neutral Output Relay
  • Failure code [D191KY] Hot Short of Neutral Output Relay
  • Failure code [D192KA] Disconnection of ECSS Solenoid Relay
  • Failure code [D192KB] Ground Fault of ECSS Solenoid Relay
  • Failure code [D192KY] Hot Short of ECSS Solenoid Relay
  • Failure code [D1B0KA] Disconnection of HST Safety Relay
  • Failure code [D1B0KB] Ground Fault of HST Safety Relay
  • Failure code [D1B0KY] Hot Short of HST Safety Relay
  • Failure code [D1B0MC] Malfunction of HST Safety Relay
  • Failure code [D1E6KA] Disconnection of Parking Brake Relay
  • Failure code [D1E6KB] Ground Fault of Parking Brake Relay
  • Failure code [D1E6KY] Hot Short of Parking Brake Relay
Failure code [D5ZHKA] Failure of Key SW C Signal
Failure code [D5ZHKB] Key SW C Signal Hot Short Circuit
Failure code [D5ZHL6] Disconnection of Key SW C
Failure code [DAF3KK] Controller Power Source Low (MON)
Failure code [DAF5KP] 5 V Sensor Power Supply: Ground Fault
Failure code [DAF6KP] 24 V Sensor Power Supply: Ground Fault
Failure code [DAFRKR] Machine Monitor CAN2 Communication Error (Machine Monitor)
Failure code [DAJ0KK] Controller Power Source Low (HST)
Failure code [DAJ0KT] Abnormality of Non-volatile Memory (HST)
Failure code [DAJ0MC] HST Controller Malfunction
Failure code [DAJ1KA] Disconnection of Key SW ACC (HST)
Failure code [DAJ2KK] Solenoid Power Source Low (HST)
Failure code [DAJ4KB] Ground Fault of Solenoid Self-Holding Relay (HST)
Failure code [DAJ4KZ] Failure of Solenoid Self-Holding Relay (HST)
Failure code [DAJ5KX] Failure of 5 V Power Source 0 (HST)
Failure code [DAJ6KX] Failure of 5 V Power Source 1 (HST)
Failure code [DAJ9KQ] Inconsistency of Model Selection (HST)
Failure code [DAJLKA] Operating Lamp Open Circuit (HST)
Failure code [DAJLKB] Operating Lamp Short Circuit (HST)
Failure code [DAJQKR] CAN2 Disconnection (HST)
Failure code [DAJRMA] Inconsistency of Option Selection (HST)
Failure code [DB2QKR] CAN2 Disconnection (Engine Controller)
Failure code [DB2RKR] CAN1 Disconnection (Engine Controller)
Failure code [DBE6KX] 24V Output Power Supply System Failure
Failure code [DD1NL4] Fan Auto Reverse Switch Signal Error
Failure code [DD1NLD] Fan Reverse Switch Signal: Abnormal
Failure code [DDB6L4] Parking Brake Signal Malfunction
Failure code [DDD7KA] Failure of Variable Speed Control
Failure code [DDD7KY] Hot Short of Variable Speed Control1 topic
  • Switch)
Failure code [DDK3KA] FNR SW Input Signal Disconnection
Failure code [DDK3KB] FNR SW Input Signal Short Circuit
Failure code [DDK6KA] FNR Lever Input Signal Disconnection
Failure code [DDK6KY] FNR Lever Input Signal Disconnection (Hot Short)
Failure code [DDNRLD] Ground Fault of Work Equipment Lock Switch
Failure code [DDS5L6] Low Steering Oil Pressure (Emergency Steering Control)
Failure code [DF10KA] Disconnection of Speed Range Input Switch
Failure code [DF10KB] Disconnection of Speed Range Selector Switch (Hot Short)
Failure code [DGH1KX] HST Oil Temperature Sensor Short to Ground
Failure code [DGR2KB] Ground Fault of Brake Oil Temperature Sensor
Failure code [DGR2KZ] Failure of Brake Oil Temperature Sensor
Failure code [DHH1KX] Failure of HST Oil Pressure Sensor
Failure code [DHH1KY] Hot Short of HST Oil Pressure Sensor
Failure code [DHPCKX] Failure of Boom Pressure Sensor (Bottom)
Failure code [DHPDKX] Failure of Boom Pressure Sensor (Head)
Failure code [DHTCL6] HST Oil Filter Clogging Detection Failure
Failure code [DJF1KA] Disconnection or Hot Short Circuit of Fuel Level Sensor
Failure code [DK5DKA] Failure of 3rd Lever Potentiometer Sensor (Main)
Failure code [DK5DKY] Hot Short of 3rd Lever Potentiometer Sensor (Main)
Failure code [DK5DL8] 3rd Lever Potentiometer Sensor (Main & Sub) Disagree
Failure code [DK5EKA] Failure of 3rd Lever Potentiometer Sensor (Sub)
Failure code [DK5EKY] Hot Short of 3rd Lever Potentiometer Sensor (Sub)
Failure code [DKA0KX] Failure of Boom Angle Sensor
Failure code [DLM3KA] Failure of Cooling Fan Speed Sensor
Failure code [DLM3LC] Ground Fault of Cooling Fan Speed Sensor56 topics
  • Failure code [DLT3KX] Vehicle Speed Sensor Circuit Failure (B)
  • Failure code [DLT4KX] Vehicle Speed Sensor Circuit Failure (A)
  • Failure code [DLT4L0] Vehicle Speed Sensor Failure (A & B)
  • Failure code [DLT4LC] Vehicle Speed Sensor Failure (A or B)
  • Failure code [DT22KB] Ground Fault of Work Equip. Lock Indicator
  • Failure code [DV00KY] Hot Short of Alarm Buzzer
  • Failure code [DW26KA] Open Circuit of Motor 2 Solenoid
  • Failure code [DW26KB] Ground Fault of Motor 2 Solenoid
  • Failure code [DW26KY] Hot Short of Motor 2 Solenoid
  • Failure code [DW44KA] Open Circuit of Directional Pressure Selection Solenoid
  • Failure code [DW44KB] Ground Fault of Directional Pressure Selection Solenoid
  • Failure code [DW44KY] Hot Short of Directional Pressure Selection Solenoid
  • Failure code [DWM1KA] Disconnection of Neutral Lock Solenoid
  • Failure code [DWM1KB] Ground Fault of Neutral Lock Solenoid
  • Failure code [DWM1KY] Hot Short of Neutral Lock Solenoid
  • Failure code [DX19KA] Disconnection of Motor 1 Solenoid
  • Failure code [DX19KB] Ground Fault of Motor 1 Solenoid
  • Failure code [DX19KY] Hot Short of Motor 1 Solenoid
  • Failure code [DX20KA] Disconnection of Clutch EPC Solenoid
  • Failure code [DX20KB] Ground Fault of Clutch EPC Solenoid
  • Failure code [DX20KY] Hot Short of Clutch EPC Solenoid
  • Failure code [DXH7KA] Disconnection of Reverse Solenoid
  • Failure code [DXH7KB] Ground Fault of Reverse Solenoid
  • Failure code [DXH7KY] Hot Short of Reverse Solenoid
  • Failure code [DXH8KA] Disconnection of Forward Solenoid
  • Failure code [DXH8KB] Ground Fault of Forward Solenoid
  • Failure code [DXH8KY] Hot Short of Forward Solenoid
  • Failure code [DXHJKA] Disconnection of 3rd EPC Solenoid (EXT)
  • Failure code [DXHJKB] Ground Fault of 3rd EPC Solenoid (EXT)
  • Failure code [DXHJKY] Hot Short of 3rd EPC Solenoid (EXT)
  • Failure code [DXHKKA] Disconnection of 3rd EPC Solenoid (RET)
  • Failure code [DXHKKB] Ground Fault of 3rd EPC Solenoid (RET)
  • Failure code [DXHKKY] Hot Short of 3rd EPC Solenoid (RET)
  • Failure code [H2K0KA] Failure of Quick Coupler Lock Signal
  • Failure code [H2K0KY] Hot Short of Quick Coupler Lock Signal
  • Failure code [J141N1] Steering Pump Over Run
  • Failure code [LA00L3] Failure of Fan Reverse
  • Failure code [M100N1] HST Pump Over Run
  • Failure code [M400N1] HST Motor 1 Over Run
  • Troubleshooting of electrical system (E-mode)
  • Engine does not start
  • Manual preheating system does not work
  • Automatic preheating system does not work
  • While preheating is working, preheating monitor does not light up
  • When starting switch is turned to ON position, nothing is displayed on machine monitor
  • Travel speed is slow
  • ECSS does not operate
  • ECSS remains being operated
  • Boom kick-out does not work or is not reset
  • Bucket positioner does not work or is not reset
  • Boom FLOAT holding does not work or is not reset
  • Directional selection does not work normally
  • Fan does not rotate in reverse
  • Fan remains in reverse rotation mode
  • Wipers do not operate
  • Window washer does not operate
Working lamp does not light up or does not go out
Turn signal and hazard lamp do not light up or do not go out
Stop lamp does not light up or remains lighting up
Backup lamp does not light up or remains lighting up
Backup alarm does not sound or does not stop sounding
Horn does not sound or does not stop sounding
Alarm buzzer does not sound or does not stop sounding
KOMTRAX system does not operate normally
Fuel gauge does not indicate correct level
Seat belt caution lamp indication is incorrect
Troubleshooting for 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
Machine travels neither forward nor in reverse
Machine does not travel forward (normally travels in reverse)
Machine does not travel in reverse (normally travels forward)
Both forward and reverse travel speeds are low
Forward travel speed is low (normal when traveling in reverse)
Reverse travel speed is low (normal when traveling forward)
Machine lacks power when traveling both forward and in reverse
Machine lacks power when traveling forward (normal when traveling in reverse)
Machine lacks power when traveling in reverse (normal when traveling forward)
Engine stalls during travel or engine speed drops significantly
Machine does not turn
Steering wheel is heavy to turn
Machine sways or large shocks are made while machine turns
Machine turns to either side unintentionally during traveling
Brake does not work or it is weak
Brake is not released or drags
Parking brake does not work or it is weak
Parking brake is not released or drags
Boom does not rise
Boom moves slow or lacks lifting force
Boom rising speed lowers at certain height
Lift cylinder cannot hold down bucket (bucket rises off ground)
Hydraulic drift of boom is large
Boom wobbles during operation
Bucket does not tilt back
Bucket moves slow or lacks tilting back force
Bucket speed lowers in tilt-back motion
Bucket cylinder cannot hold down bucket (bucket rises off ground)
Hydraulic drift of bucket is large
Loaded bucket wobbles during travel (with work equipment valve at "HOLD")
Boom and bucket control levers do not move smoothly and are heavy to move
Engine speed lowers remarkably or engine stalls while work equipment is operated
Large shock is made when work equipment starts and stops
When certain work equipment is relieved hydraulically, other work equipment moves
ECSS does not operate and machine pitches and bounds
Fan speed is abnormal (too high or low, or fan does not rotate)
Unusual noise is heard from around fan
Troubleshooting of engine (S-mode)
Information mentioned in troubleshooting table (S mode)
Engine does not crank when starting switch is turned to START position51 topics
  • Engine cranks but no exhaust smoke comes out
  • Engine startability is poor
  • Engine does not pick up smoothly
  • Engine stops during operation
  • Engine runs rough or is unstable
  • Engine lacks power
  • Exhaust smoke is black
  • Engine oil consumption is excessive
  • Oil becomes contaminated quickly
  • Fuel consumption is excessive
  • Oil is in coolant (or coolant spurts or coolant level goes down)
  • Oil pressure drops
  • Fuel mixes into engine oil
  • Water mixes into engine oil (milky)
  • Coolant temperature rises too high (overheating)
  • Unusual noise is heard
  • Vibration is excessive
  • Air cannot be bled from fuel circuit
  • General information on disassembly and assembly
  • How to read this manual
  • Coating materials list
  • Special tool 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 engine hood assembly
  • Removal and installation of cylinder head assembly
  • Removal and installation of radiator assembly
  • Removal and installation of air aftercooler assembly
  • Removal and installation of hydraulic oil cooler assembly
  • Removal and installation of engine assembly
  • Removal and installation of belt for alternator and air conditioner compressor
  • Removal and installation of engine front oil seal assembly
  • Removal and installation of engine rear oil seal assembly
  • Removal and installation of cooling fan and fan motor assembly
  • Removal and installation of fuel tank assembly
  • Removal and installation of KCCV ventilator assembly
  • Removal and installation of KDOC muffler
  • Removal and installation of EGR cooler assembly
  • Removal and installation of EGR valve assembly
  • Power train
  • Removal and installation of transfer assembly
  • Disassembly and assembly of transfer assembly
  • Removal and installation of parking brake assembly
  • Removal and installation of parking brake cylinder assembly
  • Disassembly and assembly of parking brake assembly
  • Removal and installation of front axle assembly
  • Removal and installation of rear axle assembly
  • Disassembly and assembly of axle housing assembly
  • Disassembly and assembly of differential assembly
Undercarriage and frame
Removal and installation of center hinge pin
Removal and installation of counterweight assembly
Hydraulic system
Removal and installation of HST pump and quadruple type gear pump assembly
Removal and installation of HST motor 1 assembly
Removal and installation of HST motor 2 assembly
Removal and installation of work equipment control valve assembly
Removal and installation of hydraulic tank assembly
Disassembly and assembly of hydraulic cylinder assembly
Work equipment
Removal and installation of work equipment assembly
Cab and its attachments
Removal and installation of operator's cab and floor frame assembly
Removal and installation of operator's cab glass (adhered glass)
Disassembly and assembly of operator's seat
Removal and installation of air conditioner unit assembly
Removal and installation of air conditioner compressor assembly
Electrical system
Removal and installation of machine monitor
Removal and installation of engine controller assembly
Removal and installation of HST controller assembly
Removal and installation of KOMTRAX terminal assembly
Engine mount and transfer mount
Limited slip differential
Final drive
Orbitrol valve
Steering cylinder
Steering column
Priority valve
Emergency steering valve
Brake system
Charge valve
Slack adjuster
Brake
Parking brake
Axle mount and center hinge pin
Hydraulic tank
Work equipment control valve40 topics
  • Work equipment cylinder
  • Air conditioner
  • Precautions for refrigerant
  • Air conditioner component
  • Configuration and function of refrigeration cycle
  • Outline of refrigeration cycle
  • Air conditioner unit
  • Functions of main components in air conditioner unit
  • Blower and intake unit
  • Compressor
  • Condenser
  • Receiver drier
  • Air conditioner control panel
  • Procedure for troubleshooting
  • Circuit diagram and arrangement of connector pins
  • System diagram
  • Details of air conditioner unit
  • Parts and connectors layout
  • Inspection by self-diagnosis function (displays diagnosis on the control panel)
  • Testing temperature control system
  • Testing FRESH/RECIRC air changeover
  • Testing evaporator temperature sensor
  • Testing relays
  • Troubleshooting chart 1
  • Troubleshooting chart 2
  • Troubleshooting for power supply system (Air conditioner does not operate)
  • Troubleshooting for compressor and refrigerant system (Air is not cooled)
  • Troubleshooting for blower motor system (No air comes out or air flow is abnormal)
  • Troubleshooting for temperature control
  • Troubleshooting for FRESH/RECIRC air changeover
  • Connection of service tool
  • Troubleshooting by gauge pressure
  • Precautions for disconnecting and connecting hoses and tubes in air conditioner circuit
  • Handling of compressor oil
  • Hydraulic diagrams and drawings
  • Symbols used in hydraulic circuit diagrams
  • Hydraulic circuit diagram
  • Electrical diagrams and drawings
  • Symbols used in electric circuit diagrams
  • Electrical circuit diagram

Inside this manual

Real pages from this service manual (1,563 pages). Open the sample pages (PDF, 862 KB)

Sample pages from the Komatsu WA200-7 Wheel Loader Service Manual: Diagram, Troubleshooting, Specifications, Color page, Foldout diagram
  • Diagram, page 521: Check procedure before troubleshooting
  • Troubleshooting, page 761: Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error
  • Specifications, page 1,361: 50 Disassembly and assembly
  • Color page: 60 Maintenance standard
  • Foldout diagram: 90 Diagrams and drawings

Other manuals for this machine

Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WA200-7 are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.

This manual: Service Manual SEN06503-05$159.97
Other manuals for the WA200-7

Operator's manuals

Details

This is a service manual

Here's how it compares to the other manual types.

This manual

Service manual

Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.

Operator's manual

Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.

Parts manual

Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.

Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.

What it's used for

Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.

Service shops and owner/operators who repair their own equipment

Identifying correct parts and seeing how assemblies come apart and go back together

Keeping equipment running with less downtime

Factory manual, 1,563 pages

Quantity one is the manual described above.

Fast free USA shipping

Ships in 1 business day.

60-day returns

Free if the mistake is ours. A manual ordered in error must come back unopened in its shrink-wrap; you pay return shipping and a 20% restocking fee applies. Return policy

Binder not included

Manuals over about 300 pages may need a standard 3-ring binder, which you can buy locally to keep the pages organized for shop use.

Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).