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Komatsu WA250-5L, WA250PT-5L Waste Handler Wheel Loader Service Manual

1,028 pages · Publication CEBM011605

$109.75
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Models
WA250-5L, WA250PT-5L Waste Handler
Serial coverage
WA250-5L A73001 and up, WA250PT-5L A79001 and up
Manual type
Service Manual
Pages
1,028
Publication
CEBM011605
Condition
Brand new
Komatsu WA250-5L, WA250PT-5L Waste Handler Wheel Loader Service Manual, publication CEBM011605

What's inside

From the manual's own table of contents: 4 sections, 252 entries. See sample pages (PDF, 839 KB)

FOREWORD6 topics
  • 00CONTENTS
  • GENERAL
  • STRUCTURE AND FUNCTION
  • TESTING, ADJUSTING AND TROUBLESHOOTING
  • DISASSEMBLY AND ASSEMBLY
  • OTHER
STRUCTURE AND FUNCTION121 topics
  • FRONT
  • REAR
  • AXLE MOUNTING AND CENTER HINGE CARIER
  • STEERING PIPING SYSTEM
  • STEERING COLUMN
  • PRIORITY VALVE
  • ORBIT-ROLL VALVE
  • STEERING WHEEL IN NEUTRAL
  • STEERING WHEEL TURNED (TURNING LEFT)
  • CONNECTION BETWEEN HAND PUMP AND SLEEVE
  • 2-WAY RESTRICTOR VALVE
  • STEERING CYLINDER
  • EMERGENCY STEERING PIPING
  • EMERGENCY STEERING VALVE
  • BRAKE PIPING
  • BRAKE VALVE
  • INCHING VALVE
  • CHARGE VALVE
  • ACCUMULATOR (FOR BRAKE)
  • SLACK ADJUSTER
  • BRAKE
  • PARKING BRAKE CONTROL
  • PARKING BRAKE
  • HYDRAULIC PIPING
  • WORK EQUIPMENT LEVER LINKAGE
  • MULTI-FUNCTION JOYSTICK TYPE
  • JOYSTICK TYPE (IF EQUIPPED)
  • HYDRAULIC TANK
  • BREATHER
  • PREVENTION OF NEGATIVE PRESSURE IN TANK
  • PREVENTION OF RISE OF PRESSURE IN TANK
  • 4-GEAR PUMP UNIT
  • ACCUMULATOR (FOR PPC CIRCUIT)
  • LOCK VALVE
  • BY-PASS VALVE
  • WHEN LIFT ARM IS "RAISED
  • WHEN LIFT ARM IS "LOWERED
  • POSITION TO JUST BEFORE DUMP END)
  • DUMP END TO DUMP END)
  • QUICK COUPLER SOLENOID VALVE
  • E.C.S.S. VALVE (IF EQUIPPED)
  • ACCUMULATOR (FOR E.C.S.S.) (IF EQUIPPED)
  • HYDRAULIC PIPING OF COOLING SYSTEM
  • COOLING FAN MOTOR
  • WORK EQUIPMENT CONTROL VALVE
  • 2-SPOOL VALVE
  • 3-SPOOL VALVE
  • RELIEF VALVE
  • SAFETY SUCTION VALVE
  • SUCTION VALVE
  • OPERATION OF THE WORK EQUIPMENT CONTROL VALVE
  • NEUTRAL POSITION OF THE LIFT ARM AND BUCKET SPOOLS
  • RAISE POSITION OF THE LIFT ARM SPOOL
  • LOWER POSITION OF THE LIFT ARM SPOOL
  • FLOAT POSITION OF THE LIFT ARM SPOOL
  • ROLL BACK POSITION OF THE BUCKET SPOOL
  • DUMP POSITION OF THE BUCKET SPOOL
  • WORK EQUIPMENT PPC VALVE
  • WHEN IN NEUTRAL
  • WHEN IN FINE CONTROL
  • WHEN LEVER IS OPERATED TO STROKE END
  • WHEN LIFT ARM IS FLOATED
  • WHEN FLOAT STATE OF LIFT ARM IS RESET
  • ATTACHMENT PPC VALVE (IF EQUIPPED)
  • AT THE NEUTRAL POSITION
  • AT THE FINE CONTROL POSITION
  • AT FULL STROKE
  • WORK EQUIPMENT LINKAGE
  • BUCKET
  • BUCKET POSITIONER, BOOM KICK-OUT, AND DUMP SPEED
  • BUCKET POSITIONER
  • BOOM KICK-OUT
  • OPERATION OF PROXIMITY SWITCH
  • BUCKET POSITIONER OR FORK POSITIONER
  • DUMP SPEED CONTROL
  • WORK EQUIPMENT CYLINDER
  • LIFT CYLINDER
  • BUCKET CYLINDER
  • COUPLER PLUNGER
  • AIR CONDITIONER PIPING
  • MACHINE MONITORING SYSTEM
  • OUTLINE
  • NORMAL MODE
  • SERVICE MODE
  • SERVICE METER SETTING
  • INDIVIDUAL CIRCUIT DIAGRAMS OF THE MACHINE MONITOR
  • STARTING AND LIGHTING
  • POWER SUPPLY AND NETWORK
  • SENSING
  • HST SAFETY CONTROL
  • AUTOMATIC PREHEATING
  • MACHINE MONITOR
  • LIST OF ITEMS DISPLAYED ON MONITOR
  • SERVICE MODE FUNCTIONS
  • OPERATING METHOD
  • ITEMS RELATED TO THE FAULT HISTORY OF ELECTRIC SYSTEM
  • ITEMS RELATED TO THE FAULT HISTORY OF MACHINE SYSTEM
  • REAL-TIME MONITOR FUNCTION
  • HOW TO INPUT INTERVAL
  • FUNCTION OF SELECTING OPTIONAL DEVICE
  • ELECTRICAL SYSTEM (HST CONTROLLER SYSTEM)
  • HST CONTROLLER
  • SELECTING FORWARD-REVERSE SELECTOR SWITCH
  • ENGINE STARTING CIRCUIT
  • ENGINE STOP CIRCUIT
  • PREHEATING CIRCUIT (AUTOMATIC PREHEAT SYSTEM)
  • PARKING BRAKE CIRCUIT
  • ELECTRONICALLY CONTROLLED SUSPENSION SYSTEM
  • COUPLER PLUNGER CONTROL SYSTEM
  • SENSORS
  • ENGINE SPEED SENSOR
  • TRAVEL SPEED SENSOR
  • ENGINE OIL PRESSURE SENSOR
  • FUEL LEVEL SENSOR
  • COOLANT AND HST OIL TEMPERATURE SENSOR (FOR MONITOR)
  • COOLANT TEMPERATURE SENSOR (FOR PREHEATING)
  • AXLE OIL TEMPERATURE SENSOR
  • HST OIL PRESSURE SENSOR
  • (IF EQUIPPED)
  • HST FILTER CLOGGING SENSOR
  • COOLANT LEVEL SENSOR
TESTING AND ADJUSTING79 topics
  • MEASURING BRAKE PERFORMANCE
  • ACCUMULATOR CHARGE PRESSURE
  • MEASURING BRAKE OIL PRESSURE
  • MEASURING WEAR OF BRAKE DISC
  • BLEEDING AIR FROM BRAKE CIRCUIT
  • MEASURING PARKING BRAKE PERFORMANCE
  • PARKING BRAKE LINKAGE
  • MEASURING PARKING BRAKE RELEASE PRESSURE
  • WORK EQUIPMENT CONTROL LEVER
  • WORK EQUIPMENT PRESSURE
  • WORK EQUIPMENT PPC OIL PRESSURE
  • TESTING AND ADJUSTING
  • BLEEDING AIR
  • RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
  • TESTING
  • ADJUSTING
  • PROXIMITY SWITCH ACTUATION DISPLAY LAMP
  • PROCEDURE FOR CHECKING DIODE
  • SPECIAL FUNCTIONS OF MACHINE MONITOR
  • FLOW OF MODES AND FUNCTIONS
  • OPERATOR MODE
  • SERVICE MODE 1
  • SERVICE MODE 2
  • CHARACTER DISPLAY
  • OPERATING SWITCHES
  • OPERATOR MODE OPERATION AND DISPLAYS
  • FAILURE CODE TABLE
  • PROCEDURE FOR SWITCHING TO SERVICE MODE 1 AND SCREEN DISPLAY
  • REAL-TIME MONITORING ITEMS
  • PM CLINIC INSPECTION CHART
  • IMPROPER INPUT FOR MULTIPUL SHIFT (FNR) LEVER
  • ERROR CODE: [DDS5L6]
  • DECREASED STEERING OIL PRESSURE
  • ERROR CODE: [DGE2KX]
  • ENGINE COOLANT TEMPERATURE SENSOR OUT OF RANGE
  • ERROR CODE: [DGE3KX]
  • ERROR CODE: [DGH1KX]
  • HST OIL SHOWING OVERHEATING CONDITION
  • ERROR CODE: [DGR1KX]
  • BRAKE COOLING OIL INDICATING SHORT CIRCUIT
  • ERROR CODE: [DGR4KX]
  • BRAKE COOLING OIL INDICATING OPEN CIRCUIT
  • ERROR CODE: [DHE4KA]
  • ENGINE OIL PRESSURE INDICATING A SHORT OR OPEN IN THE SYSTEM
  • TROUBLESHOOTING CODE: [MON-1]
  • PARKING BRAKE INDICATOR LAMP DOES NOT WORK
  • TROUBLESHOOTING CODE: [MON-2]
  • BRAKE OIL PRESSURE NOT INDICATING CORRECTLY
  • TROUBLESHOOTING CODE: [MON-3]
  • ENGINE COOLANT SENSOR NOT INDICATING CORRECTLY
  • TROUBLESHOOTING CODE: [MON-4]
  • HST OIL TEMPERATURE NOT INDICATING CORRECTLY
  • TROUBLESHOOTING CODE: [MON-5]
  • FUEL LEVEL GAUGE DOES NOT INDICATE PROPERLY
  • TROUBLESHOOTING CODE: [MON-6]
  • ABNORMAL COOLANT LEVEL INDICATION
  • TROUBLESHOOTING CODE: [MON-7]
  • STEERING OIL PRESSURE NOT READING CORRECTLY
  • TROUBLESHOOTING CODE: [MON-8]
  • EMERGENCY STEERING OIL PRESSURE NOT READING CORRECTLY
  • TROUBLESHOOTING CODE: [MON-9]
  • MONITOR PANEL MODE SELECTOR SWITCH WILL NOT SET CORRECTLY
  • TROUBLESHOOTING CODE: [MON-10]
  • TROUBLESHOOTING CODE: [MON-11]
  • TROUBLESHOOTING CODE: [MON-12]
  • TROUBLESHOOTING CODE: [MON-13]
  • ALARM BUZZER DOES NOT STOP OR REMAINS ON
  • TROUBLESHOOTING CODE: [MON-14]
  • FRONT WINDSHIELD WIPER DOES NOT WORK
  • REAR WINDSHIELD WIPER DOES NOT WORK
  • TROUBLESHOOTING CODE: [MON-15]
  • HEADLAMPS (LO AND HIGH BEAM) DOES NOT FUNCTION
  • AIR DOES NOT COOL OR TEMPERATURE CANNOT BE ADJUSTED
  • CANNOT SWITCH BETWEEN CIRCULATED AND VENT FUNCTIONS
  • CANNOT SWITCH VENT FUNCTIONS
  • HYDRAULIC DRIFTS OF THE BUCKET OCCURS OFTEN
  • VALVE IS SET TO "HOLD")
  • FALLS TEMPORARILY
  • CONTROL LEVERS FOR THE LIFT ARM AND BUCKET DO NOT MOVE SMOOTHLY
DISASSEMBLY AND ASSEMBLY42 topics
  • HYDRAULIC OIL COOLER
  • REMOVAL
  • INSTALLATION
  • COOLING FAN AND FAN MOTOR
  • FUEL TANK
  • TRANSFER
  • TRANSFER ASSEMBLY
  • SPECIAL TOOLS
  • DISASSEMBLY
  • ASSEMBLY
  • PARKING BRAKE ASSEMBLY
  • FRONT AXLE ASSEMBLY
  • REAR AXLE ASSEMBLY
  • AXLE HOUSING ASSEMBLY
  • DIFFERENTIAL ASSEMBLY
  • HST PUMP AND 4-GEAR PUMP ASSEMBLY
  • HST PUMP ASSEMBLY
  • HST MOTOR 1 ASSEMBLY
  • HST MOTOR 2 ASSEMBLY
  • HST MOTOR ASSEMBLY
  • WORK EQUIPMENT CONTROL VALVE ASSEMBLY
  • TRAVEL DAMPER VALVE ASSEMBLY
  • WORK EQUIPMENT ASSEMBLY (Z-BAR LINKAGE)
  • BUCKET LINK PIN
  • BUCKET HINGE PIN
  • BUCKET CYLINDER PIN (ON ROD SIDE)
  • LIFT CYLINDER PIN (ON ROD SIDE)
  • LIFT ARM PIN (ON FRAME SIDE)
  • WORK EQUIPMENT ASSEMBLY (PARELLEL TOOL CARRIER)
  • BUCKET (TILT) CYLINDER
  • BOOM (LIFT) CYLINDER
  • BOOM AND PARALLEL TOOL LINKAGE
  • HYDRAULIC CYLINDER ASSEMBLY
  • OPERATOR'S CAB ASSEMBLY
  • OPERATOR'S CAB GLASS
  • COATING MATERIALS
  • CENTER HINGE PIN
  • COUNTERWEIGHT
  • AIR CONDITIONER UNIT ASSEMBLY
  • AIR CONDITIONER COMPRESSOR ASSEMBLY
  • MONITOR PANEL
  • KOMTRAX TERMINAL ASSEMBLY

Inside this manual

Real pages from this service manual (1,028 pages). Open the sample pages (PDF, 838 KB)

Sample pages from the Komatsu WA250-5L, WA250PT-5L Waste Handler Wheel Loader Service Manual: Specifications, Troubleshooting, Diagram, Foldout diagram
  • Specifications, page 194: STRUCTURE AND FUNCTION
  • Troubleshooting, page 374: CHECKS BEFORE TROUBLESHOOTING
  • Diagram, page 554: ELECTRICAL SYSTEM CIRCUIT DIAGRAM
  • Foldout diagram, page 1,020: ELECTRICAL CIRCUIT DIAGRAM 1/4 (4/4)

Other manuals for this machine

Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the WA250-5L 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 CEBM011605$109.75
Other manuals for the WA250-5L

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, 1,028 pages

Quantity one is the manual described above.

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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.

Other editions and similar models

Komatsu WA250-5L, WA250PT-5L Waste HandlerService Manual · CEBM011604 · $109.97Komatsu WA250PT-5LOperation & Maintenance Manual · CEAM011402 · $69.59

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).