Piper Lance II - Page 210

LANCE
II SERVICE
MANUAL
TABLE
VI-III.
HYDRAULIC
SYSTEM
TROUBLESHOOTING
(cont.)
Trouble
Cause
Remedy
Landing
gear
retraction
extremely
slow.
Hydraulic
fluid
in
res-
ervoir
below
operating
level.
Fill
reservoir
with
hydraulic
fluid.
Restriction
in
hydraulic
lines.
Shuttle
valve
sticking
in pump
base.
Isolate
and
check
hydraulic
lines.
Check
cause.
Pump
stops
during
gear
retraction.
Landing
gear
actuator
circuit
breaker
opens.
Reset
circuit
breaker
and
determine
cause
for
overload.
Landing
gear
selector
circuit
breaker
opens.
Pressure
switch
out
of
adjustment.
Mechanical
restriction
or
obstruction
in
hyd-
raulic
system
to
allow
pressure
to
build
up
and
shut
off
pump
be-
fore
gear
has
re-
tracted.
Shuttle
valve
sticking
in
pump
base.
Reset
circuit
breaker
and
determine
cause
for
overload.
Remove
and
readjust
or
replace
switch.
Place
airplane
on
jacks
and
run
retraction
check.
Isolate
and
determine
cause.
Check
cause.
Pump
stops
during
gear
extension.
Landing
gear
actuator
circuit
breaker
opens.
Reset
circuit
breaker
and
determine
cause
for
overload.
Landing
gear
selector
circuit
breaker
opens.
1118
Reset
circuit
breaker
and
determine
cause
for
overload.
HYDRAULIC
SYSTEM
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