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bühler
Allied Front-End Loader
- 29 - P4094
TROUBLE SHOOTING
Problem
Loader slow and/or will not
dump.
Loader chatters or vibrates
when raising and lowering.
Excessive movement at
pivots.
Pump noisy.
Oil leaks.
Possible Cause
Quick couplers leaking
Hydraulic oil too heavy.
Oil filter plugged.
Hydraulic pump worn.
Oil line restricted or leaking.
Control valve does not shift
properly.
Air in hydraulic system.
Cylinder leaks internally.
Faulty valve.
Air leak in pump inlet line.
Air in hydraulic system.
Oil level too low.
Worn bushings and/or pins.
Inlet line restricted or
leaking.
Oil level too low.
Pump worn or damaged.
Damaged fitting or hoses.
Loose connections.
Worn or damaged O-ring
wiper seal in cylinder rod
end.
Worn or damaged O-rings in
valve.
Remedy
Check connections and
compatibility or replace.
Change or replace filter.
Clean or replace filter.
Repair or replace pump.
Check all hoses and tubes for
leaks, damage or restrictions.
Replace damaged or restricted
hoses or tube lines.
Inspect, clean, repair or
replace valve.
Cycle lift cylinders and bucket
cylinders several times to free
system of air.
Replace seals.
Repair or replace valve.
Check, tighten or replace inlet
line. Cycle lift cylinders and
bucket cylinders. Add oil as
required.
Replace bushings and/or pins.
Check for air leaks, restrictions
or collapsed hose. Tighten or
replace hose. Clean filter if
necessary.
Add oil as required.
Repair or replace pump.
Replace damaged parts.
Tighten fittings.
Install a seal repair kit.
Install an O-ring repair kit.