Piper PA-28RT-201T - Page 330

29-00-02
Page 29-09
December 1, 1978
2C3
CHART 2901. HYDRAULIC SYSTEM TROUBLESHOOTING (cont.)
Landing gear extension Pump extension solenoid Replace solenoid.
system fails to operate. inoperative (outboard
(cont.) solenoid).
—NOTE—
If the extension solenoid of the pump can be heard to actuate
when operating the gear selector switch, it may be assumed that
the gear control circuit is operating properly and the actuator
circuit should be further checked
Gear selector switch Check ground.
ground incomplete.
Gear selector switch Replace switch.
inoperative.
Hydraulic pump ground Check ground.
incomplete.
Hydraulic pump inopera- Replace or overhaul pump.
tive.
Hydraulic fluid in reservoir Fill reservoir with
below operating level. hydraulic fluid.
Low or dead battery. Check condition of battery.
Landing gear retraction Hydraulic fluid in reservoir Fill reservoir with hydraulic
extremely slow. below operating level. fluid.
Restriction in hydraulic Isolate and check hydraulic
lines. lines.
Shuttle valve sticking in Check cause.
pump base.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL