907808/CP0300 58 PRINTED IN USA
Hydrostatic System
Problem Possible Cause Remedy
Hydrostatic (drive)
system is noisy.
Hydraulic oil viscosity is too heavy.
Air in hydraulic system.
Drive motor(s) or hydrostatic pump(s)
have internal damage or leakage.
Allow longer warm-up or replace existing
oil with the proper viscosity oil.
Cycle lift and tilt cylinders to maximum
stroke and maintain pressure for a short
time to clear air from system. Also check
for low oil level in reservoir, fill as needed.
Contact your Gehl dealer for assistance.
Right side doesn’t
drive in either
direction. Left side
operates normally.
Rear hydrostatic pump arm control shaft
key missing.
Relief valves on rear hydrostatic pump
malfunctioning.
Control rod linkage to rear hydrostatic
pump disconnected.
Contact your Gehl dealer for assistance.
Contact your Gehl dealer for assistance.
Attach control rod linkage.
Right side doesn’t
drive in forward
direction.
Left hand relief valve on rear hydrostatic
pump is malfunctioning.
Rear hydrostatic pump malfunctioning.
Contact your Gehl dealer for assistance.
Contact your Gehl dealer for assistance.
Right side doesn’t
drive in reverse
direction.
Right hand relief valve on rear hydrostatic
pump is malfunctioning.
Rear hydrostatic pump malfunctioning.
Contact your Gehl dealer for assistance.
Contact your Gehl dealer for assistance.
Left side doesn’t drive
in either direction.
Right side operates
normally.
Key missing on front hydrostatic pump
arm control shaft.
Relief valves on front hydrostatic pump
malfunctioning.
Control rod linkage to front hydrostatic
pump disconnected.
Contact your Gehl dealer for assistance.
Contact your Gehl dealer for assistance.
Attach control rod linkage.
Left side doesn’t drive
in one direction.
Relief valve on front hydrostatic pump is
malfunctioning.
Front hydrostatic pump malfunctioning.
Contact your Gehl dealer for assistance.
Contact your Gehl dealer for assistance.
To Next Page
Loading...
