B95W
Troubleshooting
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10_Fehlerbeseitigung_en.fm - V1.0 - 1.8.17
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Fault No steering
Cause • Oil supply to pump interrupted
• Hydraulic pump damaged
• Priority valve damaged
• Hand metering unit damaged
• Steering cylinder damaged
• Switch for travel direction damaged
• Solenoid valve gets stuck or is damaged
• Power supply towards switch for travel direction or solenoid valve interrupted
• Filling circuit – non-return valve defective
• High-pressure relief valve is faulty or incorrectly adjusted
• Leak on adjusting piston
• Mechanical damage to variable displacement pump and/or engine
Corrective
measure
Check and repair suction line
Check, repair or replace the hydraulic pump
Priority valve: Remedy fault (call service agent)
Steering control device: Remedy fault (call service agent)
Repair steering cylinder
Repair or replace travel direction switch
Check solenoid valve and replace if necessary
Check power supply and repair (incl. ground connection)
Check and replace if necessary
Swap valves around. If machine now travels in the other direction, examine
valve, clean and replace if necessary
Inspect positioning pressure on adjusting piston (behind the floating time
nozzle)
Check variable displacement pump, call service agent if necessary
Fault Drop in machine's performance
Cause • Engine output is insufficient
• Low hydraulic oil level
• Pump is sucking up air
• Insufficient working pressure
• Switch for travel direction damaged (short-circuit)
• Magnet gets stuck or is damaged
• Centering actuator has no neutral position
• Internal damage to variable displacement pump
Corrective
measure
Check diesel engine
Top off hydraulic oil to the mark
Retighten hose connections, replace O-ring or seals
Readjust main pressure relief valves (pressure cut-off) and replace them, if
necessary
Repair or replace travel direction switch
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