Komatsu WA350-1 - Service Manual / Repair Manual - Wiring Diagrams

KOMATSU WA350-1 - WORKSHOP, SERVICE, REPAIR MANUAL - WIRING DIAGRAMS

- English Service Manual and Wiring Diagrams, for Komatsu WA350-1.
 

CONTENTS:

10 ENGINE
- 11 STRUCTURE AND FUNCTION
- Engine Mount
- Radiator
- Fuel Tank And Piping
- Engine Control
- 12 TESTING AND ADJUSTING
- Standard Value Table
- Tool List For Testing And Adjusting
- Adjusting Valve Clearance
- Measuring Compression Pressure
- Testing And Adjusting Fuel Injection Timing
- Measuring Engine Oil Pressure And Temperature
- Measuring Blow-By Pressure
- Testing And Adjusting Fan Belt Tension
- Measuring Exhaust Gas Color
- Measuring Accelerator Pedal Operating Force And Operating Angle
- Adjusting Fuel Cut Solenoid
- 13 DISASSEMBLY AND ASSEMBLY
- Starting Motor Assembly
- Alternator Assembly
- Fuel Injection Pump Assembly
- Water Pump Assembly
- Nozzle Holder Assembly
- Cylinder Head Assembly
- Turbocharger Assembly
- Compressor Assembly
- Radiator Assembly
- Oil Cooler Assembly
- Engine Assembly
- Fuel Tank
20 POWER TRAIN
- 21 STRUCTURE AND FUNCTION
- General
- Torque Converter And Transmission Piping
- Torque Converter Charging Pump
- Torque Converter
- Torque Converter Oil Filter
- Torque Converter Oil Cooler
- Torque Converter Relief Valve
- Transmission
- Transmission Control Valve
- Transmission Pilot Filter
- Transfer
- Drive Shaft
- Axle Mount
- Axle And Differential
- Final Drive
- Tire And Wheel
- 22 TESTING AND ADJUSTING
- Standard Value Table
- Tool List For Testing And Adjusting
- Measuring Engine Stall Speed
- Measuring Oil Pressure Of Torque Converter And Transmission
- Measuring Shift Lever
- Method For Operation Of Emergency Manual Spool
- Tire And Wheel
- Troubleshooting
- 1. MACHINE DOES NOT MOVE
- 2. MACHINE LACKS POWER OR SPEED
- 3. EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR
- 4. TORQUE CONVERTER OIL TEMPERATURE TOO HIGH
- 23 DISASSEMBLY AND ASSEMBLY
- Torque Converter Charging Pump
- Torque Converter, Transmission, Transfer Assembly
- Torque Converter Assembly
- Transmission Assembly
- Transfer Assembly
- Transmission Control Valve
- DISASSEMBLY
- ASSEMBLY
- DISASSEMBLY
- ASSEMBLY
- Front Differential
- Rear Differential
- Differential
- Front Axle
- Rear Axle
- Drive Shaft
- Final Drive
- 24 MAINTENANCE STANDARD
- Transmission And Engine Mount
- Torque Converter Charging Pump
- Torque Converter
- Torqflow Transmission
- Transfer
- Differential
- Final Drive
- Drive Shaft
- Axle Mount
40 STEERING SYSTEM
- 41 STRUCTURE AND FUNCTION
- General
- Hydraulic Circuit For Steering
- Steering Control System
- Steering Cylinder
- Steering Column And Gear Box
- Center Hinge Pin
- Steering Linkage
- Emergency Steering Pump (If Equipped)
- Diverter Valve (If Equipped)
- Security Valve (If Equipped)
- 42 TESTING AND ADJUSTING
- Standard Value Table
- Tool List For Testing And Adjusting
- Measuring Steering Wheel Play
- Measuring Operating Force Of Steering Wheel
- Operating Time Of Steering Wheel Lock To Lock
- Testing Steering Linkage
- Adjusting Steering Linkage
- Steering Oil Pressure
- Troubleshooting
- 1. STEERING WHEEL DOES NOT TURN
- 2. STEERING WHEEL IS SLUGGISH
- 3. STEERING WHEEL MOVES UNSTEADILY OR IS SUBJECTED TO LARGE SHOCK
- 4. MACHINE TENDS TO TURN NATURALLY IN ONE PARTICULAR DIRECTION WHEN TRAVELING
- 5. LEFT AND RIGHT TURNING RADII ARE DIFFERENT
- 43 DISASSEMBLY AND ASSEMBLY
- Steering Gear
- Steering Valve
- Steering Cylinder
- Center Hinge Pin
- 44 MAINTENANCE STANDARD
- Steering Linkage
- Steering Column And Gear Box
- Steering Valve
- Steering Cylinder Mount
- Steering Cylinder
- Center Hinge Pin
- Diverter Valve (If Equipped)
- Emergency Steering Pump (If Equipped)
- Security Valve (If Equipped)
50 BRAKE AND AIR SYSTEM
- 51 STRUCTURE
- General
- Air Tank
- Safety Valve
- Brake Valve
- Air Governor
- Two-Way Valve
- Brake Chamber
- Slack Adjuster
- Brake
- Parking Brake
- Parking Brake Solenoid Valve
- Spring Cylinder
- Brake Caliper
- 52 TESTING AND ADJUSTING
- Standard Value Table
- Tool List For Testing And Adjusting
- Measuring Brake Pedal
- Measuring Air
- Brake Performance
- Checking Brake Piston Leakage
- Measuring Wear Of Brake Disc
- Air Bleeding From Brake Line
- Parking Brake Performance
- Checking And Adjusting Parking Brake
- Troubleshooting
- 53 DISASSEMBLY AND ASSEMBLY
- Air Governor
- Brake Valve
- Brake Chamber
- Slack Adjuster
- Brake Assembly
- Spring Cylinder
- Parking Brake
- Parking Brake Pad
- 54 MAINTENANCE STANDARD
- Brake Valve
- Brake Chamber
- Slack Adjuster
- Brake
- Parking Brake
- Spring Cylinder
60 WORK EQUIPMENT SYSTEM
- 61 STRUCTURE AND FUNCTION
- General
- Hydraulic Circuit System
- Hydraulic Circuit Diagram (For 2-Spool)
- Hydraulic Circuit Diagram (For 3-Spool, With Emergency Steering (If Equipped))
- Bucket Linkage
- Bucket Positioner And Boom Kick-Out
- Hydraulic Tank
- Hydraulic And Steering Pumps
- Main Control Valve (For 2-Spool)
- Main Control Valve (For 3-Spool (If Equipped))
- Hydraulic Cylinder
- 62 TESTING AND ADJUSTING
- Standard Value Test
- Tool List For Testing And Adjusting
- Measuring Dump And Lift Control Levers
- Adjusting Dump And Lift Control Levers
- Measuring Hydraulic Pressure
- Measuring Lift Arm And Bucket
- Measuring Hydraulic Drift Of Lift Arm And Bucket
- Adjusting Bucket Positioner
- Adjusting Boom Kick-Out
- Troubleshooting
- 63 DISASSEMBLY AND ASSEMBLY
- Hydraulic Tank
- Hydraulic Filter
- Hydraulic, Steering Pump
- Main Control Valve
- Dump Cylinder
- Lift Cylinder
- Hydraulic Cylinder Assembly
- Work Equipment
- Counterweight
- 64 MAINTENANCE STANDARD
- Main Control Valve (For 2-Spool)
- Main Control Valve (For 3-Spool)(If Equipped)
- Dump Cylinder
- Lift Cylinder
- Bucket Linkage
- Bucket Positioner And Boom Kick-Out
- Bucket
- Hydraulic And Steering Pump
80 ELECTRIC AND ELECTRONIC SYSTEM
- 81 STRUCTURE AND FUNCTION
- Electric And Electronic System
- Electrical Wiring Diagram
- Electrical Wiring Diagram Circuit
- Engine Starting Circuit
- Engine Stop Circuit
- Preheating Circuit
- Combination Switch
- Electrical Transmission Control
- Electrical Parking Brake Control
- Electronic Vehicle Monitoring System (Evms)
- 82 TESTING AND ADJUSTING
- Adjusting Speedometer Module In The Vehicle Monitor
- Troubleshooting
- E-1 ENGINE DOES NOT START
- E-2 ENGINE DOES NOT STOP
- E-3 ENGINE STOPS WHEN TRAVELING
- E-4 PARKING BRAKE DOES NOT WORK
- E-5 PARKING BRAKE IS APPLIED WHEN TRAVELING
- E-6 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED TO ON
- E-7 TRANSMISSION IS NOT RETURENED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED
- E-8 MACHINE DOES NOT TRAVEL FORWARD
- E-9 MACHINE DOES NOT TRAVEL REVERSE
- E-10 TRANSMISSION DOES NOT SHIFT GEAR (F-R SWITCH NORMAL)
- E-11 MACHINE DOES NOT TRAVEL WHEN TRANSMISSION CUT-OFF SWITCH IS ON
- E-12 TRANSMISSION CANNOT BE CUT-OFF
- E-13 TRANSMISSION DOES NOT RETURN TO NEUTRAL
- E-14 PREHEATING DISPLAY DOES NOT GO OUT
- E-15 PREHEATING DOES NOT WORK
- M-1 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, BRAKE OIL LEVEL DISPLAY FLASHES
- M-2 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, ENGINE OIL LEVEL DISPLAY FLASHES
- M-3 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNOMALITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES
- M-4 BATTERY CHARGE DISPLAY FLASHES
- M-5 FUEL LEVEL DISPLAY FLASHES
- M-6 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NO ABNORMLITY IN MACHINE FAILURE IN BRAKE LINE DISPLAY FLASHES
- M-7 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, ENGINE OIL PRESSURE DISPLAY FLASHES
- M-8 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMLITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES
- M-9 EVEN WHEN ENGINE IS STOPPED AND THERE IS NOT ABNORMALITY IN MACHINE, DROP IN AIR PRESSURE DISPLAY FLASHES
- M-10 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NO ABNORMALITY IN MACHINE, COOLANT TEMPERATURE DISPLAY FLASHES
- M-11 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, TORQUE CONVERTER OIL TEMPERATUER DISPLAY FLASHES
- M-12 PARKING BRAKE DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
- M-13 WORKING LAMP DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
- M-14 PREHEAT DISPLAY LIGHTS UP ABNORMALLY
- M-15 FAILURE IN MAIN STEERING DISPLAY LIGHT UP ABNORMALLY, OR DOES NOT LIGHT UP (IF EQUIPPED)
- M-16 EMERGENCY STEERING NORMAL DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP (IF EQUIPPED)
- M-17 TRANSMISSION CUT-OFF DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
- M-18 TURN SIGNAL LAMPS, HIGH BEAM LIGHT UP ABNORMALLY, OR DOES NOT LIGHT UP
- M-19 SPEEDOMETER DISPLAY DOES NOT WORK NORMALLY
- M-20 SERVICEMETER DISPLAY DOES NOT WORK NORMALLY
- M-21 ALL OR PART OF MONITOR PANEL DOES NOT WORK NORMALLY, IF ANY FUSE IS BROKEN, REPLACE AFTER CHECKING
- M-22 EVEN WHEN ENGINE STOPPED, ENGINE OIL PRESSURE DISPLAY FLASHES, OR BATTERY CHARGE DISPLAY FLASHES
- M-23 NO LAMPS ON MONITOR LIGHT UP (IMMEDIATELY AFTER TURNING STARTING SWITCH TO ON, ENGINE STOPPED)
- M-24 CENTRAL WARNING LAMP DOES NOT GO OUT
- M-25 CENTRAL WARNING BUZZER DOES NOT STOP
- M-26 NONE OF PANEL LAMPS ON MONITOR LIGHT UP
- M-27 SOME OF PANEL LAMPS ON MONITOR DO NOT LIGHT UP
- M-28 EMERGENGY ITEM IS FLASHING, BUT ALARM BUZZER DOES NOT SOUND
- M-29 EMERGENCY ITEM OR NON-EMERGENCY ITEM IS FLASHING, BUT WARNING LAMP DOES NOT FLASH
- M-30 ABNORMALITY IN FUEL GAUGE
- M-30-1 ABNORMALTIY IN FUEL GAUGE SENSOR
- M-31 ABNORMALITY IN AIR PRESSURE GAUGE
- M-32 ABNORMALITY IN COOLANT TEMPERATUERE GAUGE
- M-33 ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE
- 83 DISASSEMBLY AND ASSEMBLY
- Machine Monitor
90 OTHERS
- 91 OTHERS
- Cab
- Air Conditioner (If Equipped)
- 93 DISASSEMBLY AND ASSEMBLY
- Cab
- Air Conditioner Unit
- Condenser For Air Conditioner
- Dry Receiver
- Compressor For Air Conditioner
- 97 GEAR PUMP
- 97 General
- 97 Sa Series