B95W
Troubleshooting
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10_Fehlerbeseitigung_en.fm - V1.0 - 1.8.17
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Top up hydraulic oil to recommended mark
Clean, check, and replace hydraulic oil cooler if necessary
Tighten connections with engine off and system relieved of pressure
Fault Hydraulic oil exceeds max. admissible temperature
Cause • Thermo switch damaged
• Oil level too low
• Oil cooler dirty or damaged
• Suction filter clogged
• High-pressure valves do not respond all the time
• Flushing circulation not functioning
• Variable displacement pump or variable displacement motor damaged (wear)
Corrective
measure
Replace thermo switch
Top off oil to the mark on the sight glass
Clean, check and replace oil cooler if necessary
Replace suction filter
Check high-pressure valves, re-adjust if necessary
Check pressure of flushing and charge pump, possible back pressure in
cooling circuit, check housing pressure
Replace variable displacement pump and/or variable displacement motor
Fault Hydrostatic travel drive works in neither direction
Cause • Too little hydraulic oil in tank
• Mechanical connection to diesel engine faulty
• Charge pump damaged, no charge pressure
• Switch for travel direction damaged
• Valve for travel direction damaged
• Power supply towards switch for travel direction and/or solenoid valve
interrupted
• Pressure relief valve (supply pressure) faulty
• Suction filter clogged
• Suction line between tank and pump kinked
• No or insufficient supply pressure
• Variable displacement pump activation interrupted
• Mechanical damage to variable displacement pump and/or engine
• Internal damage to variable displacement pump or variable displacement
motor
• Mechanical connection between variable displacement motor and axle
interrupted
Corrective
measure
Top up hydraulic oil to mark on sight glass
Check and repair mechanical connection to diesel engine
Replace variable displacement pump
Check travel direction switch and replace if necessary
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