Allied Telesis 595 - Manual (Page 20)

Trouble Shooting
PROBLEM POSSIBLE CAUSE REMEDY
Loader slow and/or will not dump. 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.
Cyiinder leaks internally.
Faulty valve.
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 repiace valve.
Cycle lift cylinders and bucket cylinders
several times to free system of air.
Replace seals.
Repair or replace valve.
Loader chatters or vibrates when
raising and lowering.
Excessive movement at pivots
Air leak in pump iniet line.
Air in hydraulic system.
Oil level too low.
Worn bushings and/or pins.
Check, tighten or replace inlet line.
Cycle lift cylinders and bucket cylinders.
Add oil as required.
Replace bushings and/or pins.
Pump noisy Inlet line restricted or leaking.
Oil level too low.
Pump worn or damaged.
Check for air leaks, restrictions or collapsed
hose. Tighten or replace hose. Clean
filter if necessary.
Add oil as required.
Repair or replace pump.
Oil leaks. Damaged fittings or hoses.
Loose connections.
Worn or damaged 0-ring wiper
seal in cylinder rod end.
Worn or damaged 0-rings in valve.
Replace damaged parts.
Tighten fittings.
Install a seal repair kit.
Install an 0-ring repair kit.
Insufficient lift capacity Improper hydraulic pump operation.
Load is greater than boom lift capacity.
Internal boom cylinder leakage.
Improper hydraulic valve operation.
Repair or replace pump.
Check loader specifications.
Replace any worn parts and install
a seal repair kit.
Repair or replace valve.
Slow leakdown. Worn control valve.
Worn cylinder piston seals. Have authorized dealer replace seals.
Have authorized dealer replace seals.
Excessive wear on bottom oil bucket
and wear pads.
Float position not used while operating
loader.
Use float position provided on valve.
Hydraulic cylinders inoperative. Hose from control valve improperly
connected.
Refer to plumbing diagrams.
Pump operating continually on closed
center tractor hydraulic system.
Tractor control valve relief stuck
open.
Hydraulic control valve set too low.
See your tractor manual for proper
adjustment or Loader dealer for loader
valve. (3000 PSI is maximum pressure
relief setting recommended.)
Adjust valve In accordance with manual.
Loader lift and bucket tilt controls do
not work according to decal.
Valve noisy and/or hot
Hoses improperly connected.
Open center control valve on closed
center tractor.
Refer to plumbing diagrams
and correct hose connections.
Replace relief valve with closed center plug
and plug the power beyond adapter on valve.
Tractor loads/pump squeals Closed center control valve on open
center tractor.
18
Install open center plug on optional valve.
Replace closed center plug with relief and
install short plug in place of power beyond
adapter.