Hydraulic System Troubleshooting - Gehl RT175 Operator's Manual

Troubleshooting

Hydraulic System Troubleshooting

Table 45: Hydraulic System Troubleshooting
Problem
Hydraulics do not work or have poor
performance
Attachment tilts forward with control in
neutral
Lift arm does not raise/lower
Attachment tilt not working, but lift arm work
properly
Lift arm does not raise but attachment tilt
works properly
Hydraulic system overheating
918468/EP0313
Possible Cause
Error code present?
Low hydraulic oil level
Hydraulic oil is not at operating
temperature
Engine to pump coupling or hydraulic
pump damaged
Pressure limiting valves set too low or
damaged
Hydraulic cylinder(s) damaged
Control valve(s) damaged
Engine speed too low
Dirty/restricted air filter(s)
Incorrect fuel type/grade
Hydraulic oil leaking past cylinder seals
(internal and/or external)
Leaking hydraulic system components,
such as hoses, tubes, fittings, valves, etc.
Leak past spool in control valve
Joystick/electrical malfunction
Parking brake applied
Lift spool in control valve not actuated or
leaking
Joystick/electrical malfunction code
displayed
Tilt spool in control valve not actuated or
leaking
Joystick/electrical malfunction code
displayed
Lift spool in control valve not actuated or
leaking
Joystick/electrical malfunction code
displayed
Dirty hydraulic oil cooler
Low hydraulic oil level
Load too high
136
Corrective Action
See "Error Codes" on page 140
Top-off hydraulic oil. See "Checking
Hydraulic Oil Level" on page 112
Allow longer warm-up
Contact dealer
Contact dealer
Contact dealer
Contact dealer
Adjust engine speed. See "Throttle
Controls" on page 56
Replace filter(s) and/or remove restriction
Replace fuel with proper type/grade. See
"Fluids/Lubricants Types and Capacities"
on page 31
Contact dealer
Repair as necessary
See "Error Codes" on page 140
Disengage parking brake. See
"Disengage Parking Brake" on page 66
Contact dealer
See "Error Codes" on page 140
Contact dealer
See "Error Codes" on page 140
Contact dealer
See "Error Codes" on page 140
Clean hydraulic oil cooler
Top-off hydraulic oil. See "Checking
Hydraulic Oil Level" on page 112
Reduce load
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