Honda FL6555 Operator's Manual page 49

TROUBLE SHOOTING
PROBLEM
Inadequate lifting capacity
POSSIBLE CAUSE
Engine RPM too
SIOW
Excessive load - material
weight exceeds specified
loader capacity.
Relief valve setting below
specifications.
Lift cylinder piston assembly
leakage.
Control valve leaking
internally.
Hydraulic pump defective.
Aeration of hydraulic fluid
(generally indicated by
foamy appearance of fluid).
System relief valve squeals.
Lower hydraulic fluid level.
Air leaking into suction side
of hydraulic pump.
Hydraulic fluid foaming due
to improper hydraulic oil
usage.
Cold hydraulic fluid.
CORRECTlON
Increase engine RPM.
Reduce load.
Excessive load in bucket.
Weight exceeds specified
loader capacity.
Relief valve setting below
specifications.
Hydraulic hose, tubeline or
quick disconnect coupler
restriction.
Check relief valve setting as
described under relief valve
test.
Check cylinders for leakage
as described in service
section under cylinder
leakage tests.
Replace control valve and
recheck operation.
Refer to "hydraulic pump
capacity inadequate."
Check and refill hydraulic
system to proper level.
Check for loose or defective
connections between
reservoir and hydraulic
pump-
Refer to tractor owner's
manual and replace
hydraulic oil using
recommended hydraulic oil.
Allow hydraulic fluid to warm
up to operating temperature.
Reduce loads.
Check relief valve setting as
described under relief valve
test.
Check for evidence of
restriction in hydraulic oil
flow. Repair or replace
defective component(s).
47