Aileron Trim Tab Removal; Removal Of Flap; Installation Of Flap; Removal Of Wing - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
4-17. AILERON TRIM TAB.
4-18. REMOVAL OF AILERON TRIM TAB. (Refer to Figure 4-2.)
a. Disconnect the control rod at the tab.
b. Remove the inboard hinge bolt.
c. Pull the tab back and inboard enough to remove the outboard hinge pin from its bushing.
Remove the tab.
4-19. INSTALLATION OF AILERON TRIM TAB. (Refer to Figure 4-2.)
a. Insert the tab control rod through the aileron and insert the outboard hinge pin into its bushing.
b. Position the inboard hinge brackets, install hinge bolt and torque to 38 in. Ibs. includes .18 in.
Ibs. average friction torque.
c.
Connect the tab control rod.
4-20. FLAP.
4-21. REMOVAL OF FLAP. (Refer to Figure 4-2.)
a.
Lower flap to within a few degrees of full extension.
b. At the left flap, disconnect the position sender rod by removing the cotter pin from the forward
end of the rod.
c. Disconnect the flap control tube at the flap. Do not rotate the control tube unless it is intended
to adjust the flap.
d. Remove the upper roller assemblies from the flap brackets.
e. Remove the lower roller assemblies and remove flap.
4-22. INSTALLATION OF FLAP. (Refer to Figure 4-2.)
a. Put the flap in position and install the lower roller assemblies on the flap brackets and torque
bolts.
b.
Install the upper roller assemblies and torque bolts.
c. Connect the control tube.
d. If the left flap was removed, connect the position sender rod.
e. Check flap for proper operation. Rigging and adjustment procedure may be found in Section V.
4-23. WING.
4-24. REMOVAL OF WING. (Refer to Figure 4-5.)
a. Close the fuel valve and drain the fuel from the wing to be removed. (Refer to Draining Fuel
System, Section II.)
b.
Remove the engine from the wing to be removed. (Refer to Removal of Engine, Section VIII.)
c. Remove the fairing and access panel from around the leading edge of the wing, located between
the fuselage and engine nacelle.
d. At the fillet fairing on top of the wing, between the fuselage and wing, remove the rivets that
attach the fairing to the wing.
e. Remove the access plates from the fairing located between the under side of the wing butt and
fuselage and the access plate to the spar splice located on the under side of the fuselage.
f. Within the fuselage, remove the spar cover.
g. Remove the fore and aft floor panels adjacent to the main spar and if removing the left wing,
remove the left forward floor panel between the fuselage side trim panel and control pedestal.
Reissued: 9/23/80
STRUCTURES
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