Troubleshooting Guide
Hydraulic Problems
4
4-8 doc052711 Troubleshooting Guide
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 (Mobil SHC 526)
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
fluid to thicken
Allow fluid to warm up. Synthetic fluids are
available that allow for hydraulic operation in
cold weather conditions. (Mobil SHC 526)
Springs weakening in
sequence valve.
Locate sequence valve at bottom of turner
cylinder. Turn heavy spring in about 1/4 turn
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