Gehl R150 - Page 172

168 50940193/DP0415
Sluggish travel drive
acceleration
Low hydraulic oil level.
Top off hydraulic oil. See “Checking Hydraulic
Oil Level” on page 143. See “Fluid Capacities/
Lubricants” on page 183 for proper oil grade.
Low hydrostatic system charge
pressure.
Contact dealer.
Drive motor or hydrostatic
pump internal damage/
leakage.
Air in hydraulic system.
Cycle lift and tilt cylinders to maximum stroke
and maintain pressure for short time to clear air
from system. Also check for low oil level in
reservoir; top off as necessary.
Travel drive
overheating
Drive system continuously
overloaded.
Improve operation procedure.
Lift/tilt or auxiliary system
continuously overloaded.
Drive motor(s) or hydrostatic
pump(s) internal damage/
leakage.
Contact dealer.
Low hydraulic oil level.
Top off hydraulic oil. See “Checking Hydraulic
Oil Level” on page 143. See “Fluid Capacities/
Lubricants” on page 183 for proper oil grade.
Oil cooler fins restricted. Clean oil cooler fins.
Hydraulic oil filter restricted.
Clean hydraulic oil cooler. See “Cleaning
Radiator Fins” on page 141.
Right side drive
doesn’t operate in
either direction. Left
side operates
normally.
Rear hydrostatic pump relief
valve malfunction.
Contact dealer.
Rear hydrostatic pump control
rod linkage malfunction.
Right side drive
doesn’t operate in
one direction.
Rear hydrostatic pump relief
valve malfunction.
Contact dealer.
Rear hydrostatic pump
malfunction.
Left side drive
doesn’t operate in
either direction.
Right side operates
normally.
Front hydrostatic pump relief
valve malfunction.
Contact dealer.
Linkage front hydrostatic pump
control rod linkage malfunction.
Left side drive
doesn’t operate in
one direction.
Front hydrostatic pump relief
valve malfunction.
Contact dealer.
Front hydrostatic pump
malfunction.
Table 27: Hydrostatic Drive System Troubleshooting
Problem Possible Cause Corrective Action