HONDA FL5540K0 User Manual
Page 44
TROUBLE
SHOOTING
FOAMING
OF
OIL IN SYSTEM
Low oil level
-
Fill reservoir. Look for leaks.
Water
in oil
-
Drain and replace oil.
Wrong
kind of oil being used
-
See
specifications on proper oil.
Air leak
in line from reservoir t o
pump
-
Tighten or replace suction line.
Kink
in oil suction line
-
Replace oil line.
Worn seal around pump shaft
-
Clean
sealing area and replace seal. Check oil for
contamination.
PUMP MAKES NOISE
Low oil level
-
Fill reservoir. Check system
for leaks.
Oil viscosity too high
-
See specifications
on proper
oil.
Cold oil
-
Allow oil
to warm up before
operating.
Suction line plugged or pinched
-
Clean or
replace
line
between reservoir and pump.
Reservoir air vent plugged
-
Remove vent
plug, flush, and clean air vent.
Air
in
oil
-
Tighten or replace suction line.
Check system for leaks. Check pump shaft
seal.
.Worn or scored
pump
bearings or shafts
-
Replace pump.
PUMP LEAKS OIL
Damaged
seal
around
pump
shaft
-
Replace seal.
LOAD DROPS WITH CONTROL VALVE IN
NEUTRAL POSITION
Leaking or broken oil lines from control
valves
to
cylinder
-
Check for leaks.
Tighten or replace lines.
Oil leaking past cylinder packing or
rings
-
Replace worn parts.
If
wear is
caused
by
contamination, clean hydraulic
system and determine source of dirt.
Oil leaking past control valve
-
Clean or
replace valve. Wear may be caused by
contamination. Clean system and determine
source of dirt.
CONTROL VALVE STICKS OR WORKS HARD
Valve broken or scored internally
-
Replace valve.
CONTROL VALVE LEAKS OIL
Worn or damaged
rings
-
Replace
rings.
If contamination has caused
rings
to wear, clean system and look for source.
Broken valve parts
-
Replace parts or
valve.
CYLINDER LEAKS OIL
Damaged cylinder bowl
-
cylinder. Correct cause
of damage.
Rod seal leaking
-
Replace seal.
If
contamination caused seal to wear.
look
for
source. Wear may be caused by external as
well as internal contaminants. Check piston
rod
for
scratches
or
misalignment.
Loose
parts
-
Tighten parts.
Piston rod damaged
-
Check rod for nicks
or scratches that could cause seal damage or
allow oil leakage. Replace defective cylinder.
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