Wood-mizer LT40L DH - Hydraulic Problems Troubleshooting (Continued); Sequence Valve Issues Affecting Supports and Turner

Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide HDSdoc041118 4-9
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
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.