PROBLEM
Jerky Lift Operation
1
Oil Leaks
Insufficient Lift
Capacity
Slow Raise
Slow Leakdown
Excessive wear on
bottom of bucket and
wear pads.
Hydraulic Cylinders
Inoperative
Pump operating
continually on closed
center tractor
hydraulic system.
Loader lift and bucket
tilt controls do not work
according to decal.
Table 4-1 Troubleshooting Procedure
POSSIBLE CAUSE
Cold oil
Low oil supply or air in
hydraulic system.
Defective fittings or hoses.
Loose connections.
Worn or damaged seals at
rod end of cylinder.
Seal in valve worn or
damaged.
Tractor relief valve set too
low or stuck open.
Improper rate of flow
through control valve in
tractor or on loader.
Worn control valve.
Worn cylinder piston seals.
Float position not used
while operating loader.
Hoses from independent
control valve improperly
connected to rear of tractor.
Hydraulic control valve relief
stuck open.
Hydraulic control valve set
too low.
Hoses improperly
connected.
REMEDY
Warm oil by raising and lowering boom with
tractor at half throttle.
Check for oil leaks or loose connections. Check
oil supply and add proper amount and type of oil.
Replace fittings or hoses. Reseal and tighten
connections.
Have authorized Bush Hog dealer replace seals.
Have authorized Bush Hog dealer replace seals.
See your tractor manual for proper adjustment
(2000
PSI is pressure relief setting recommended)
Adjust rate of flow. (see tractor operator's
manual)
Have authorized Bush Hog dealer replace seals.
Have authorized Bush Hog dealer replace seals.
Use float position provided on valve.
Reverse hose connections
See your tractor manual for proper adjustment or
Bush Hog dealer for loader valve.
(2500
PSI is
maximum pressure relief setting recommended)
Refer to plumbing diagram on page
1 3
and
correct hose connections.
