Piper Arrow IV Turbo Maintenance Manual page 335

CHART 2901. HYDRAULIC SYSTEM TROUBLESHOOTING (cont.)
Trouble
Landing gear fails to operate
at required speeds. (Gear up
at 103 KIAS for PA-28RT-
201T or 95 KIAS for
PA-28RT-201, gear down at
78 KIAS for PA-28RT-201T
or 75 KIAS for PA-28RT-
201. (cont.)
Landing gear will not retract
after selecting up at an air-
speed above actuator speed.
(Also upon trying to over-
ride it is found that only
with a steady pressure can
the override be activated.
After gear does retract and
the override lever (manual
extruder) is relaxed (approx-
imately 11 to 15 seconds)
the gear will fall free.
With gear selector down
and three green lights on,
gear unsafe light comes on
or intermittently on.
With gear selector down
and three green lights on,
pump motor circuit breaker
opens.
With gear unsafe light on,
pump operates on and off.
With gear unsafe light on,
pump motor circuit
breaker opens.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Cause
Friction or tight connection
at any of the attachment
points (pivot points) of the
override lever or actuator
arm.
Binding of diaphragm shaft
caused by build up of sand
or dirt.
Restriction in pressure head
of head back-up extender
actuator.
Shorted gear up solenoid.
Shorted gear up solenoid.
Shorted gear down sole-
noid.
Shorted gear down sole-
noid.
2C8
Remedy
Clean, free and lubricate
all pivot points.
Clean all moving parts.
Disconnect hoses at back-up
extender and clean out
hoses and head.
Replace solenoid.
Replace solenoid.
Replace solenoid.
Replace solenoid.
29-00-02
Page 29-14
December 1, 1978