Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide
60HDdoc042607
6-9
6
HYDRAULIC TOE BOARDS
OR CLAMP "CREEP" DOWN
WITHOUT THE JOYSTICK
BEING OPERATED OR DO
NOT RAISE OR LOWER AT
ALL
Can be a result of failing to
lower completly the toe
board/log clamp before load-
ing the log and hitting the toe
board/log clamp by the log
being loaded (which can
cause damage to the toe
board/log clamp and the
sawmill bed).
· Damaged hoses;
· Damaged cylinder seals or
cylinder;
· Damaged hydraulic valve;
· Damaged check valve.
INITIAL CHECK
To check, disconnect the toe board
hydraulic hose from its current valve
section and temporarily connect it to
another valve section. Check to see if
the hydraulics operate properly.
If hydraulics operate properly,
hoses
and cylinder seals are good. Perform
further valve inspection, found below.
If down creep still occurs,
check all
hoses for possible pinholes causing
leakage. Replace if applicable. Retest.
If down creep still occurs,
replace
cylinder seals or cylinder and retest.
Be sure to reconnect the hose to the
proper valve section when done.
FURTHER VALVE INSPECTION
If further inspection of the valve is
required after initial check, remove the
check valve shown below. Flush the
check valve with an air hose or solvent
to remove any dirt from the valve's
seat. Reinstall and test again. Check to
see if the hydraulics operate properly.
If down creep still occurs,
replace
the check valve with a new one.
Retest.
If down creep still occurs,
replace the hydraulic valve section.
Bad check valve (results in
one of the toe boards experi-
encing down-creep).
Replace either only the check valve
or the entire hydraulic valve section.
