Filter
Top Products
bühler
Allied Front-End Loader
- 30 - P4493
Trouble Shooting Continued
Problem
Insufficient lift capacity.
Slow leak down.
Excessive wear on bottom of
bucket and wear pads.
Hydraulic cylinders
inoperative.
Pump operating continually on
closed center tractor
hydraulics system.
Loader lift and bucket tilt
controls do not work according
to decal.
Valve noisy and/or hot.
Tractor loads/pump squeals.
Stiff control valve.
Possible Cause
Improper hydraulic pump
operation.
Load is greater than boom
lift capacity.
Internal boom cylinder
leakage.
Improper hydraulic valve
operation.
Worn control valve.
Worn cylinder piston seals.
Float position not used while
operating loader.
Hose from control valve
improperly connected.
Tractor control valve relief
stuck open.
Incorrect Auxiliary Valve.
Hydraulic control valve set to
low.
Hoses improperly
connected.
Open center control valve on
closed center tractor.
Closed center control valve
on open center tractor.
Dirt or moisture build up on
spool ends.
Incorrect torque (applies to
sectional valves only).
Remedy
Repair or replace pump.
Check loader specifications.
Replace any worn parts and
install a seal repair kit.
Repair or replace valve.
Have authorized dealer
replace seals.
Use float position provided on
valve.
Refer to plumbing diagrams.
See your service manual for
proper adjustment.
Check with loader dealer for
proper valve application.
Adjust valve in accordance
with manual.
Refer to plumbing diagrams
and correct hose connections.
Replace relief valve with
closed center plug and plug
the power beyond adapter on
valve.
Install open center plug on
optional valve. Replace
closed center plug with relief
and install short plug in place
of the power beyond adapter.
Clean spool ends and if
applicable cable ends at valve.
Loosen and re-torque bolts to
specs.