Troubleshooting Guide
Hydraulic Problems
6
6-11
60HDdoc011304
Troubleshooting Guide
PROBLEM
CAUSE
SOLUTION
Pump Motor Runs With Little
Or No Response From The
Cylinders
Low battery
Test battery. Recharge or replace as
necessary
Low fluid level
Check fluid level. Add an all-season
hydraulic fluid such as Amoco Rycon
Oil MV or Mobil Multipurpose ATF
(automatic transmission fluid)
until level is 4 - 4 1/2" from bottom of
reservoir with all cylinders retracted
Pressure relief valve moved
from proper setting
Adjust pressure relief 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)
Pump Motor Runs Continu-
ously When Power Contact
Is Made
Solenoid is stuck closed
Tapping the solenoid may solve this
problem temporarily. Replace solenoid
Fluid Leaks From Around
Cylinder Piston Ram
Worn seals
Replace seals in cylinder. Check piston
ram for abrasive weld that may be
causing premature seal failure
Fluid Leak Around Pump
Box
Loose seal or fitting
Wipe pump off completely to locate
cause of leak. 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 subsequently
spray out, giving the appearance that
fluid is leaking from the pump