Wing Flap Controls (Dukes System) (S/N 31-5 To 31-7812129 Inclusive) - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
5-57. WING FLAP CONTROLS.
(DUKES SYSTEM) (S/N 31-5 to 31-7812129 inclusive.)
5-58. REMOVAL OF FLAP ACUTATOR MOTOR. (Refer to Figure 5-15.)
a.
Remove the center floor panel located in the main cabin area. The flap actuator motor (5) is
located on the forward side of the fuselage bulkhead at station 174.0.
b. Disconnect the electrical leads from the motor.
c.
Cut safety wire (12) and disconnect the flexible drive shaft ends (4 and 6) from the motor.
d. Remove the clamp (9) that holds the motor on its mounting bracket (13). Remove the motor.
e. If desired to replace the shock grommets in the bulkhead, the motor with its mounting bracket
may be removed together by removing the bracket mounting bolts at the bulkhead.
5-59. INSTALLATION OF FLAP ACTUATOR MOTOR. (Refer to Figure 5-15.)
a.
Install the shock grommets in the bulkhead at station 174.0.
b.
Install the flap actuator motor (5) and bracket (13) on the forward side of the bulkhead.
Ascertain that the anti-rotation pin on the motor fits in the pin hole in the mounting bracket. Secure the
holding clamp (9).
c. Connect the flexible drive shaft ends (4 and 6) to the motor (per Paragraph 5-61) and secure nut
(10) with .040 safety wire (12).
d. Connect the electrical leads.
e.
Check flap rigging and adjustment per Paragraphs 5-66 and 5-67.
f.
Install access plates and panels and seats.
5-60. REMOVAL OF FLEXIBLE FLAP ACTUATOR SHAFT. (Refer to Figure 5-15.)
a. Remove the center floor panel located in the main cabin area.
b. Remove the right and/or left row of seats and floor panels aft of the main spar.
c. Remove the aft access plate on the fairing located on the underside between the fuselage and
wing.
d. Remove the access plates at the aft side of the wheel well at stations 34.5,44.5 and 54.0 and on
the underside of the wing at the trailing edge at stations 65.0, 82.75 and 92.5.
e. Cut the safety wire (12) and disconnect the shaft (4 and 6) from the actuator motor (5) and flap
transmission (3 and 7).
f. Remove the support clamp on the fuselage bulkhead and the support grommets within the wing
and fuselage.
g. Remove the actuator shaft.
Reissued: 10/12/79
SURFACE CONTROLS
Effectivity
DUKES
1J19