Kioti KL155 Manual page 50

PROBLEM
Low hydraulic fluid level.
Aeration of Hydraulic
Fluid(Generally indicated Air leaking into suction side of hydraulic pump.
by foamy appearance of
fluid).
Hydraulic fluid foaming due to improper
hydraulic oil usage.
Cold Hydraulic Fluid.
Excessive load in bucket. Weight exceeds
specified loader capacity.
System relief valve
squeals.
Relief valve setting below specifications.
Hydraulic hose, tubeline or quick disconnect
coupler restriction.
Loader drops with control Cylinder piston assembly leakage.
valve spool in "centered"
position (no external oil
leakage evident.)
Note: A gradual drop
Control valve internal leakage.
over an extended period
of time is a normal
condition.
POSSIBLE CAUSE
TROUBLE SHOOTING 10-5
CORRECTION
Check and refill hydraulic system to proper
level.
Check for loose or defective connections
between reservoir and hydraulic pump.
Refer to Tractor Operator's Manual and
replace hydraulic oil using recommended
hydraulic oil.
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.
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