Operator`s manual

Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide HD92doc042701 4-11
4
Fluid Leak Around Pump Box Loose seal or fitting Wipe pump off completely to locate
cause of lead. You may have to
unbolt the pump to wipe behind it.
NOTE: Movement of the sawmill can
cause fluid to slosh up into the foam
filter in the reservoir cap, and subse-
quently spray out, giving the appear-
ance that fluid is leaking from the
pump
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
fluidtothicken
Allow fluid to warm up. Synthetic flu-
ids are available that allow for hydrau-
lic 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
fluidtothicken
Allow fluid to warm up. Synthetic flu-
ids are available that allow for hydrau-
lic 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