Factory Shop Manual For Komatsu Wheel Loader-Waste Handler. Manual Contains Illustrations, Instructions, Diagrams For Step By Step Remove And Install, Assembly And Disassembly, Service, Inspection, Repair, Troubleshooting, Tune-Ups.
Format: PDF
Language: English
Pages: 1062
Number: CEBM011604 (october 2009)
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes
Model
Komatsu Wheel Loader-Waste Handler
WA250-5L
SN A73001 And Up
WA250PT-5L
SN A79001 And Up
Contents
-GENERAL
Specification
Fuel, Coolant And Lubricants
-STRUCTURE AND FUNCTION
Engine And Drive System Mounting
Drive System Damper
Cooling System
Powertrain
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 Carrier
Steering Piping System
Steering Column
Priority Valve
Orbit-Roll Valve
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
Hydraulic Tank
4-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
Troubleshooting Code
-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
Troubleshooting Code
-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
-TROUBLESHOOTING OF HYDRAULIC MECHANICAL SYSTEM (H MODE)
Method Of Using Troubleshooting Chart
Failure Code And Cause Table
Code
-TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)
(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 Running
(S-16) Excessive Vibration When Engine Is Running
-TROUBLESHOOTING AIR CONDITIONING
Air Conditioning System
-DISASSEMBLY AND ASSEMBLY
Precautions When Performing An Operation
Special Tool List
Sketches Of Special Tools
Connector Repair Procedures
Fuel Injection Pump Assembly
Nozzle Holder Assembly
Cylinder Head Assembly
Engine Assembly
Radiator Assembly
Air Aftercooler
Hydraulic Oil Cooler
Cooling Fan And Fan Motor
Fuel Tank
Transfer
Transfer 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
Hydraulic Tank
Work Equipment Assembly (Z-Bar Linkage)
Work Equipment Assembly (Parallel Tool Carrier)
Hydraulic Cylinder Assembly
Operator’s Cab Assembly
Operator’s Cab Glass
Center Hinge Pin
Counterweight
Air Conditioner Unit Assembly
Air Conditioner Compressor Assembly
Monitor Panel
Komtrax Terminal Assembly
-SCHEMATICS AND DIAGRAMS
Hydraulic Circuit Diagram
Electrical Circuit Diagram
What you get
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