Honda FL6555 Operator's Manual page 48

TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
Slow or erratic Lift. Low hydraulic fluid.level.
Cold hydraulic fluid.
Engine R.P.M. too slow
(Hydraulic pump R.P.M. too
slow).
Excessive weight in bucket.
Material weight exceeds
maximum specified loader
capacity.
Control valve linkage
binding/defective.
Aeration of hydraulic fluid.
Quick disconnect coupler
restriction or coupler "flow
check".
Hydraulic hose or tubeline
restriction
(hoses/tubeline kinked or
pinched).
Lift cylinder piston assembly
linkage.
Relief valve erratic or set
below specifications.
Control valve leaking
internally.
(Bypassing fluid within
valve).
Inadequate hydraulic pump
capacity.
CORRECTION
Check/replenish hydraulic
fluid
Allow hydraulic system to
warm up to operating
temperature.
Increase engine speed to
obtain satisfactory loader
operation.
Reduce material loads.
Check control valve linkage
and repair if worn/defective.
Refer to 'Aeration of
hydraulic fluid".
Check coupler(s). R,epair or
replace.
Check hoses and tubelines
for evidence of restriction.
Check cylinders for leakage
described in service section
under cylinder leakage tests.
Check relief valve setting as
described under relief valve
test.
Replace control valve and
recheck operation.
Refer to 'hydraulic pump
capacity inadequate".
46