Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide
HD97doc041910
6-12
6
PROBLEM CAUSE
SOLUTION
Hydraulic Side Supports Go
Down Before Or At Same
Time As Log Turner
Dirt in sequence valve
Remove sequence valves and clean
thoroughly with kerosene.
NOTE:
Be
sure to reassemble the valve and
install it in its original position on the
cylinder
Retainer in sequence valve
worn
Replace sequence valve
Low air temperature causing
fluid to thicken
Allow fluid to warm up. Synthetic fluids
are available that allow for hydraulic
operation in cold weather conditions
(Univis HVI 13)
Hydraulic Turner Goes Up
Before Or At Same Time As
Side Supports
Dirt in sequence valve
Remove sequence valves and clean
thoroughly with kerosene.
NOTE:
Be
sure to reassemble the valve and
install it in its original position on the
cylinder
Retainer in sequence valve
worn
Replace sequence valve
Low air temperature causing
fluid to thicken
Allow fluid to warm up. Synthetic fluids
are available that allow for hydraulic
operation in cold weather conditions.
(Univis HVI 13)