Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 450

PIPER CHEROKEE WARRIOR SERV I C E M A N U A L
a. Remove four screws holding plate around tab. Lift detector is fastened to the plate; remove unit
from wing.
b. Mark electrical wires and terminals to aid installation. Remove electrical wires from lift detector;
remove lift detector from airplane.
11-148. INSTALLATION OF LIFT DETECTOR
Refer to electrical schematic of stall warning system located at
the end of this section.
a. Attach electrical wires to their correct terminals on lift detector.
b. Position lift detector with its mounting plate on wing, so sensor blade drops down freely; secure in
position with the four screws previously removed.
11-149. ADJUSTMENT OF LIFT DETECTOR
The lift detector switch is adjusted at the factory when the airplane is test flown, and should not
require further adjustment during normal service life of the airplane. If service on the wing requires removing
the switch, the following instructions will aid in proper switch positioning.
a. Loosen the two Phillips head screws; one on either side of vane. If stall warning sounds too late,
move switch up. If stall warning sounds too early, move switch down. Tighten screws after adjustments.
b. The only way to test accuracy of the setting is to fly the airplane into a full stall condition and note
speed at which the stall warning sounds. Stalls must be made with flaps up and power off. It may be
n e c e ssary to make several test flights and alternate adjustments before the desired setting is obtained. The stall
warning must sound not less than five mph, or more than ten mph before the stall occurs.
11-150. ELECTRICAL SWITCHES
11-151. DESCRIPTION.
The main electrical switches are rocker type and are mounted in the middle of the instrument panel.
11-152. REMOVAL OF ELECTRICAL SWITCHES (WARRIOR/WARRIOR II)
a. Disconnect positive battery cable.
b. For a particular switch removal, remove the screw above and screw below the switch on the front
of the instrument panel.
c. From behind the instrument panel, remove the switch, and disconnect the electrical connections.
11-153. INSTALLATION OF ELECTRICAL SWITCHES (WARRIOR/WARRIOR II)
a. Connect electrical leads with mounting screws in their proper place.
b. Insert switch into its designated slot on the instrument panel and secure with the two screws previ-
ously removed.
c. Connect positive battery cable.
Revised: February 28, 1995
NOTE
CAUTION
Never adjust switch by bending vane.
NOTE
Note placement of electrical leads to aid installation.
2G19
Island Enterprises
ELECTRICAL SYSTEM