Troubleshooting
Hydraulic Problems
Troubleshooting
HDSdoc021716
4-8
4
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 oil to
thicken
Allow fluid to warm up. Synthetic fluids are
available that allow for hydraulic operation in
cold weather conditions (Exxon/Esso Univis
J26).
Hydraulic Turner Goes Up
Before Or At Same Time As
Side Supports
Spring weakening in sequence valve
Locate sequence valve at top of turner cylinder.
Turn heavy spring in about 1/4 turn
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 oil to
thicken
Allow fluid to warm up. Synthetic fluids are
available that allow for hydraulic operation in
cold weather conditions (Exxon/Esso Univis
J26).
Spring weakening in sequence valve
Locate sequence valve at bottom of turner
cylinder. Turn heavy spring in about 1/4 turn