Komatsu WA250-5-L Wheel Loaders and WA250PT-5-L Parallel Tool Cariers Workshop Manual (CEBM011604)

Illustrated factory Workshop Manual for Komatsu 4WD Wheeled Loaders Models WA250-5-L and Tool Cariers Models WA250PT-5-L.

This manual will assist you in diagnosing, repairing, and adjusting for your 4wd wheeled loader or tool carier.
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Covered Models:
   WA250-5-L 4WD Wheeled Loader (SN: A73001-)
   WA250PT-5-L Tool Carier (SN: A79001-)

Format: PDF, 1062 pages
Language: English
Table of Contents:
   CEBM011604 - WA250-5L/WA250PT-5L
      List of revised pages Rev4.pdf
   GENERAL
      SPECIFICATION
      FUEL, COOLANT AND LUBRICANTS
   STRUCTURE AND FUNCTION
      ENGINE AND DRIVE SYSTEM MOUNTING
      DRIVE SYSTEM DAMPER
      COOLING SYSTEM
      POWER TRAIN
      HST HYDRAULIC PIPING DIAGRAM
      HST PUMP
      HIGH-PRESSURE CUT-OFF VALVE
      HST MOTORS
      TRANSFER
      TRANSFER OIL COOLER
      CLUTCH SOLENOID VALVE
      AXLES
      DIFFERENTIALS
      LIMITED-SLIP DIFFERENTIAL
      FINAL DRIVE
      AXLE MOUNTING AND CENTER HINGE CARIER
      STEERING PIPING SYSTEM
      STEERING COLUMN
      PRIORITY VALVE
      ORBIT-ROLL VALVE
      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
      HYDRAULIC TANK
      GEAR PUMP UNIT
      ACCUMULATOR (FOR PPC CIRCUIT)
      LOCK VALVE
      BY-PASS VALVE
      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
      WORK EQUIPMENT PPC VALVE
      ATTACHMENT PPC VALVE (IF EQUIPPED)
      WORK EQUIPMENT LINKAGE
      BUCKET
      BUCKET POSITIONER, BOOM KICK-OUT, AND DUMP SPEED
      WORK EQUIPMENT CYLINDER
      AIR CONDITIONER PIPING
      MACHINE MONITORING SYSTEM
      INDIVIDUAL CIRCUIT DIAGRAMS OF THE MACHINE MONITOR
      MACHINE MONITOR
      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
      KOMTRAX SYSTEM
   TESTING, ADJUSTING AND TROUBLESHOOTING
      STANDARD VALUE TABLE
      SPECIAL TOOLS
      ENGINE COMPONENTS
      MEASURING ENGINE SPEED
      OPERATING FORCE OF ACCELERATOR PEDAL
      OPERATING ANGLE OF PEDAL
      ADJUSTING ENGINE STOP SOLENOID
      ADJUSTING ENGINE SPEED SENSOR
      REFRIGERANT COMPRESSOR BELT
      MEASURING DIRECTIONAL LEVER EFFORT
      HST OIL PRESSURE
      MEASURING CLUTCH CONTROL PRESSURE
      STEERING WHEEL
      STEERING OIL PRESSURE
      HYDRAULIC FAN
      REVERSING FAN CONTROLLER, IF EQUIPPED
      MEASURING BRAKE PEDAL
      BRAKE PEDAL LINKAGE
      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
      RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT
      BUCKET POSITIONER
      BOOM KICK-OUT
      PROXIMITY SWITCH ACTUATION DISPLAY LAMP
      PROCEDURE FOR CHECKING DIODE
      SPECIAL FUNCTIONS OF MACHINE MONITOR
      FLOW OF MODES AND FUNCTIONS
      PM CLINIC INSPECTION CHART
   TROUBLESHOOTING (GENERAL)
      POINTS TO REMEMBER WHEN TROUBLESHOOTING
      SEQUENCE OF EVENTS IN TROUBLESHOOTING
      PRECAUTIONS WHEN CARRYING OUT MAINTENANCE
      CHECKS BEFORE TROUBLESHOOTING
      CONNECTION TABLE FOR CONNECTOR PIN NUMBERS
      T-ADAPTER TABLE
      CONNECTOR TYPES AND MOUNTING LOCATIONS
      CONNECTOR LAYOUT DRAWING
   TROUBLESHOOTING OF HST CONTROLLER SYSTEM (HST MODE)
      POINTS TO REMEMBER WHEN TROUBLESHOOTING SYSTEM
      HST CONTROLLER SYSTEM DIAGRAM
      TROUBLESHOOTING CODE DISPLAY
      FUSE SYSTEM CHECK
      INFORMATION CONTAINED IN TESTING PROCEDURES
      ERROR CODE: [989F00]
      ERROR CODE: [DHH1KX]
      ERROR CODE: [DLE2LC]
      ERROR CODE: [DW26KZ]
      ERROR CODE: [DX19KZ]
      ERROR CODE: [DX20KZ]
      TROUBLESHOOTING CODE: [HST-1]
      TROUBLESHOOTING CODE: [HST-2]
      TROUBLESHOOTING CODE: [HST-3]
      TROUBLESHOOTING CODE: [HST-4]
      TROUBLESHOOTING CODE: [HST-5]
   TROUBLESHOOTING OF HST MONITOR SYSTEM (HST MODE)
      POINTS TO REMEMBER WHEN TROUBLESHOOTING SYSTEM
      MONITOR SYSTEM CIRCUIT DIAGRAM
      TROUBLESHOOTING CODE DISPLAY
      FUSE SYSTEM CHECK
      INFORMATION CONTAINED IN TESTING PROCEDURES
      ERROR CODE: [15B0NX]
      ERROR CODE: [2G42ZG]
      ERROR CODE: [989F00]
      ERROR CODE: [989FN1]
      ERROR CODE: [AB00L6]
      ERROR CODE: [AB00MA]
      ERROR CODE: [B@BAZG]
      ERROR CODE: [B@BCNS]
      ERROR CODE: [B@BCZK]
      ERROR CODE: [B@C7NS]
      ERROR CODE: [B@CRNS]
      ERROR CODE: [D5ZHL6]
      ERROR CODE: [DAF0KT]
      ERROR CODE: [DAJ0KR]
      ERROR CODE: [DD15LD]
      ERROR CODE: [DD16LD]
      ERROR CODE: [DD17LD]
      ERROR CODE: [DD18LD]
      ERROR CODE: [DDK3KB]
      ERROR CODE: [DDS5L6]
      ERROR CODE: [DGE2KX]
      ERROR CODE: [DGE3KX]
      ERROR CODE: [DGH1KX]
      ERROR CODE: [DGR1KX]
      ERROR CODE: [DGR4KX]
      ERROR CODE: [DHE4KA]
      TROUBLESHOOTING CODE: [MON-1]
      TROUBLESHOOTING CODE: [MON-2]
      TROUBLESHOOTING CODE: [MON-3]
      TROUBLESHOOTING CODE: [MON-4]
      TROUBLESHOOTING CODE: [MON-5]
      TROUBLESHOOTING CODE: [MON-6]
      TROUBLESHOOTING CODE: [MON-7]
      TROUBLESHOOTING CODE: [MON-8]
      TROUBLESHOOTING CODE: [MON-9]
      TROUBLESHOOTING CODE: [MON-10]
      TROUBLESHOOTING CODE: [MON-11]
      TROUBLESHOOTING CODE: [MON-12]
      TROUBLESHOOTING CODE: [MON-13]
      TROUBLESHOOTING CODE: [MON-14]
      TROUBLESHOOTING CODE: [MON-15]
   TROUBLESHOOTING OF ELECTRICAL SYSTEM (E MODE)
      POINTS TO REMEMBER WHEN TROUBLESHOOTING SYSTEM
      ELECTRICAL SYSTEM CIRCUIT DIAGRAM
      FUSE SYSTEM CHECK
      INFORMATION CONTAINED IN TESTING PROCEDURES
      CODE: (E-1)
      CODE: (E-2)
      CODE: (E-3)
      CODE: (E-4)
      CODE: (E-5)
      CODE: (E-6)
      CODE: (E-7)
      CODE: (E-8)
      CODE: (E-9)
      CODE: (E-9)
      CODE: (E-10)
      CODE: (E-11)
      CODE: (E-11)
      CODE: (E-11)
      CODE: (E-11)
      CODE: [E-11]
      CODE: (E-11)
      CODE: (E-12)
      CODE: (E-13)
      CODE: (E-13)
      CODE: (E-13)
      CODE: (E-13)
      CODE: (E-13)
   TROUBLESHOOTING OF HYDRAULIC MECHANICAL SYSTEM (H MODE)
      METHOD OF USING TROUBLESHOOTING CHART
      FAILURE CODE AND CAUSE TABLE
      CODE: (H-1)
      CODE: (H-2)
      CODE: (H-3)
      CODE: (H-4)
      CODE: (H-5)
      CODE: (H-6)
      CODE: (H-7)
      CODE: (H-8)
      CODE: (H-9)
      CODE: (H-10)
      CODE: (H-11)
      CODE: (H-12)
      CODE: (H-13)
      CODE: (H-14)
      CODE: (H-15)
      CODE: (H-16)
      CODE: (H-17)
      CODE: (H-18)
      CODE: (H-19)
      CODE: (H-20)
      CODE: (H-21)
      CODE: (H-22)
      CODE: (H-23)
      CODE: (H-24)
      CODE: (H-25)
      CODE: (H-26)
   TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)
      METHOD OF USING TROUBLESHOOTING CHARTS
      (S-1) ENGINE STARTING PERFORMANCE IS POOR
      (S-2) ENGINE HAS STARTING PROBLEMS
      (S-3) ENGINE DOES NOT RUN SMOOTHLY
      (S-4) ENGINE STOPS DURING OPERATIONS
      (S-5) ENGINE SPEED HUNTS
      (S-6) ENGINE LACKS POWER
      (S-7) EXHAUST SMOKE IS BLACK
      (S-8) OIL CONSUMPTION IS EXCESSIVE OR EXHAUST SMOKE IS BLUE
      (S-9) OIL BECOMES CONTAMINATED QUICKLY
      (S-10) FUEL CONSUMPTION IS EXCESSIVE
      (S-11) OIL FOUND IN COOLANT, OR COOLANT SPURTS FROM RADIATOR
      (S-12) OIL PRESSURE CAUTION LAMP LIGHTS UP
      (S-13) OIL LEVEL RISES (COOLANT OR FUEL FOUND IN OIL)
      (S-14) COOLANT TEMPERATURE TOO HIGH (OVERHEATING)
      (S-15) ABNORMAL NOISE IS HEARD WHEN ENGINE IS RUNNUNG
      (S-16) EX