Hydrostatic Travel Drive System Troubleshooting - Gehl RT175 Operator's Manual

Table 45: Hydraulic System Troubleshooting
Problem
Lift and/or tilt functions inconsistent/jerky
Lift arm does not maintain position with
control joysticks in neutral
Auxiliary hydraulics not functioning

Hydrostatic Travel Drive System Troubleshooting

Table 46: Hydrostatic Travel Drive System Troubleshooting
Problem
Hydrostatic drive and lift/tilt not responsive
Drive does not operate in either direction
Printed in U.S.A.
Possible Cause
Air in hydraulic system
Low hydraulic oil level
Cylinder(s) malfunction
Joystick/electrical malfunction code
displayed
Hydraulic oil leaking past cylinder seals
(external leak)
Hydraulic oil leaking past lift spool in
control valve
Leaking hydraulic hoses, tubes of fittings
between control valve and cylinders
Spool in control valve not actuated or
leaking
Hydraulic oil leaking past seals
Auxiliary hydraulics connected
improperly
Possible Cause
Hydraulic oil viscosity too heavy
Control system malfunction with error
code displayed
Parking brake applied
Low hydraulic oil level
Low or no charge pressure
Hydrostatic pump(s) relief valves
malfunction
Control system malfunction with error
code displayed
137
Troubleshooting
Corrective Action
Cycle lift and tilt cylinders to maximum
stroke and maintain for a few seconds to
clear air from the hydraulic system
Top-off hydraulic oil. See "Checking
Hydraulic Oil Level" on page 112
Contact dealer
See "Error Codes" on page 140
Contact dealer
Contact dealer
Contact dealer
Contact dealer
Contact dealer
Correct hydraulic connections
Corrective Action
Allow longer warm-up
Replace hydraulic oil with proper type/
grade. See "Fluids/Lubricants Types and
Capacities" on page 31
See "Error Codes" on page 140
Disengage parking brake. See
"Disengage Parking Brake" on page 66
Top-off hydraulic oil. See "Checking
Hydraulic Oil Level" on page 112
Contact dealer
Contact dealer
See "Error Codes" on page 140
918468/EP0313