TROUBLESHOOTING 10-5
Cold Hydraulic Fluid.
Excessive load in bucket. Weight
exceeds specified loader capacity.
Relief valve setting below specifications.
Hydraulic hose, tubeline or quick
disconnect coupler restriction.
Cylinder piston assembly leakage.
Control valve internal leakage.
Control lever linkage binding.
Control valve spool centering is broken.
Control valve spool binding in valve body
spool bore.
System relief valve
squeals.
Loader drops with control
valve spool in "centered"
position (no external oil
leakage evident.)
Note: A gradual drop over
an extended period of time
is a normal condition.
Control valve spool(s) will
not return to centered
position.
Problem Possible Cause Correction
A low hydraulic fluid to warm up to operating
temperature.
Reduce load.
Check and reset valve setting as needed.
Check for evidence of restriction in hydraulic oil
flow. Repair or replace defective components.
Check cylinders for leakage.
Replace control valve and recheck.
Determine origin of binding and repair.
Replace centering spring.
Disassemble valve for inspection and repair.
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