Piper Arrow IV, Руководство по обслуживанию, Страница: 354 / 752

1. Place airplane on jacks. (Refer to Jacking, Chapter 7.)
2. With gear down, master switch ON, and circuit breaker closed, place landing gear selector switch in
the UP position. The pump should immediately start operating and the gear retract. The red gear unsafe light
on the instrument panel should light up until the gear is fully retracted. The hydraulic pump should stop
operating after full gear retraction.
3. Place gear selector switch in DOWN position. The gear should extend and lock in position. Gear down
lights on the instrument panel will light up when all three gears are locked in position. Inspect hydraulic
system for leakage of hydraulic fluid.
4. Recycle the landing gear to determine that it functions properly.
—CAUTION—
Prior to removing the airplane from jacks, turn master switch on
and determine that all three green lights are energized. This will
indicate the landing gear is down and locked.
5. To check operation of gear back-up extender actuator, refer to Check and Adjustment of Gear Back-Up
Extender Actuator for Check and Adjustment Procedures.
SERVICING HYDRAULIC PUMP/RESERVOIR.
The fluid level of the reservoir of the combination pump and reservoir should be checked every 50 hours
by viewing the fluid through the filler plug hole in the hydraulic pump. Access to the pump is through the
access panel in the aft wall of the baggage compartment.
To check fluid level, remove the filler plug located on the forward side of the pump and ascertain that fluid
is visible up to the bottom of the filler plug hole. Should fluid be below the hole, add fluid, MIL-H-5606,
through the filler hole until full. Reinstall the filler plug and tighten.
—NOTE—
A small vent hole is located under the vent screw head. Retain
1/64 inch clearance between the screw head and the small vent
hole.
—END—
29-10-28
Page 29-33
Revised: December 21, 1981
2D3
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL