Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide
doc092506
4-9
4
PROBLEM
CAUSE
SOLUTION
Pump Motor Runs With Little
Or No Response From The
Cylinders
Low fluid level
Check fluid level. Add an
all-season hydraulic fluid such
as Amoco Rycon Oil MV or
Mobil Multipurpose ATF (auto-
matic 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. Syn-
thetic fluids are available that
allow for hydraulic operation
in cold weather conditions
(Mobil SHC 526)
Fluid Leaks From Around Cyl-
inder Piston Ram
Worn seals
Replace seals in cylinder.
Check piston ram for abrasive
weld that may be causing pre-
mature seal failure
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:
Move-
ment of the sawmill can cause
fluid to slosh up into the foam
filter in the reservoir cap, and
subsequently spray out, giv-
ing the appearance that fluid
is leaking from the pump
