Removal Of Flexible Actuator Shaft - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
5-76. ASSEMBLY OF FLAP ACTUATOR MOTOR. (Refer to Figure 5-22.)
a. Assemble shoulder washers ( 13¥. contact studs (10), lockwashers( 12) and nuts (11) to front end bell.
Position flat on contact studs parallel to the side of the brush holder. On early models, apply Loctite 75
adhesive to inner nut (11). (See Sketch A of Figure 5-22.) Torque outer nut (II) to 30-35 inch-pounds.
b. Install insulator assembly (8) on front end bell and secure with 4 screws (9).
c. Install brush springs (7) and brushes (6) into brush holders. Position brush leads through slot
towards center of end bell and connect to contact studs.
d. Attach ball bearings (15) to each end of the armature shaft.
NOTE
A light press fit on the bearings may be required on the shaft.
e. Install front end bell assembly onto commutator end of armature.
f. Insert armature assembly into sleeve and magnet assembly (18) with commutator end of armature
towards larger recess in motor sleeve.
CAUTION
A strong magnet pull will be encountered when inserting armature
assembly into sleeve and magnet assembly.
g. Position front end bell on sleeve so that mounting holes are in line with pin in sleeve and lockwire
hole is to the right of the pin.
h. Insert spring washer (16) into bearing bore of rear end bell (1) with tangs on washer pointing up.
i. Install rear end bell on sleeve with mounting holes lined up with pin in sleeve and lockwire hole to
the left of the pin.
j. Insert screws (4) through front end bell (5) and rear end bell (1). Secure with lockwashers (3) and hex
nuts (2). Torque nuts (2) 30-40 inch-pounds.
5-77. INSTALLATION OF FLAP ACTUATOR MOTOR. (Refer to Figure 5-23.)
a. Install the shock grommets in the bulkhead at station 174.
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 pinhole in the mounting bracket. Secure the holding clamp
(9).
c. Connect the flexible drive shaft ends (4 and 6) to the motor and attach nut (10) fingertight, secure
with MS20995-C41 safety wire (12).
d. Connect the electrical leads.
e.
Check flap rigging and adjustments per instructions given in this section.
f. Install access plates and panels.
5-78. REMOVAL OF FLEXIBLE ACTUATOR SHAFT. (Refer to Figure 5-23.)
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 34.50, 44.50 and 54, and on the
underside of the wing at stations 65, 82.75 and 92.50.
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.
Revised: 10/5/83 SURFACE CONTROLS
Effectivity
1J19
CALCO