Piper Navajo PA-31 Service Manual page 240

WING FLAP
MOTOR
25A
ELECTRONIC
TIME DELAY
FLAP
SWITCH
PIPER NAVAJO SERVICE MANUAL
5-67. RIGGING AND ADJUSTMENT OF FLAP POSITION SENDER.
a.
Lower the flaps and remove the access plates on the left wing false spar at stations 92.5 and
101.0.
b. Lower the flap to an angle of 15
°
1° (lift flap trailing edge to obtain angle measurement);
loosen sender arm (22) on the sender shaft (21) and rotate the shaft until the wing flap indicator on the
instrument panel shows the flap at the take-off position (bottom of white arc).
c.
Tighten the arm (22) on the sender shaft. Check the three flap positions (retracted, take-off and
extended) with respect to the angular settings and indicated positions on the wing flap indicator.
d. Install the access plates.
NOTE:
REFER TO SECTION XI-ELECTRICAL SCHEMATIC
FOR HEAVY DUTY UNITS.
FLAP
INDICATOR
A+ FROM
STARTER CIRCUIT
TO GEAR
WARNING HORN
SENDER _
NOTE GEAR WARNING HORN CONNECTION ON SERIAL NOS.31-855
AND UP ONLY
Figure 5-16. Flap Circuit Diagram (Dukes System)
Revised: 11/15/82
Effectivity
DUKES
SURFACE CONTROLS
1J24