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OPERATION
2647 01/11 Operation Section 4-38
© 2011 Alamo Group Inc.
OPERATION
10. TROUBLESHOOTING GUIDE
TROUBLE POSSIBLE CAUSE POSSIBLE REMEDY
Loader slow or will not lift Hydraulic oil too heavy. Change to proper oil.
and/or dump
Oil filter plugged. Clean or replace filter.
Hydraulic pump worn. Repair or replace pump.
Oil line restricted or leaking. Check all hoses and tubes for leaks,
damage or restrictions. Replace
damaged or restricted hoses or tube
oil lines.
Control valve does not shift Inspect, clean, repair or replace
properly. valve.
Air in hydraulic system. Cycle lift cylinders and bucket
cylinders several times to free
system of air.
Cylinder leaks internally. Replace seals.
Faulty relief valve (tractor). Clean and replace relief valve.
Loader chatters or Air leak in pump inlet line. Check, tighten or replace inlet line.
vibrates when raising
or lowering
Air in hydraulic system. Cycle lift and bucket cylinders.
Oil level too low. Add oil as required.
Oil leakage Loose connections. Tighten fittings.
Defective fittings or hoses. Replace defective parts.
Worn or damaged o-ring or Install a seal repair kit.
wiper seal in cylinder rod end. See “Cylinder Service”.
Worn or damaged or rings in Install an o-ring repair kit.
valve.
Insufficient lift capacity Load is greater than boom Check loader specifications.
lift capacity.
Improper hydraulic pump Repair or replace pump.
operation.
Internal lift cylinder leakage. Replace any worn parts and install
a seal repair kit. See “Cylinder
Service”.
Improper hydraulic valve Repair or replace valve.
operation.