Aileron Trim Controls; Removal Of Aileron Trim Assembly - Piper Navajo PA-31 Service Manual

NOTE
If provisions are provided for safety wiring the nut and screw on the
aileron bellcrank assembly, safety wire per MS33540 as shown in
Figure 5-7a.
f.
Check control operation, bolts and turnbuckles for safety and installation of cable guard pins.
g. Install access plates and panels.
5-13. AILERON TRIM CONTROLS.
5-14. REMOVAL OF AILERON TRIM ASSEMBLY. (Control Pedestal) (Refer to Figure 5-2.)
a. Remove the right and left pilot's seat and the right row of seats within the cabin.
b. Remove the access plate attached to the right side of the control pedestal.
c. Remove the aileron trim control knob by removing the roll pin that secures the knob to screw
assembly shaft and remove knob. Remove the covers from the face of the control pedestal.
d. Remove the floor panel aft of the control pedestal, and the right panels fore and aft of the main
spar.
e. Relieve cable tension from the aileron cables by loosening one of the turnbuckles (17) in the
fuselage at station 100.0.
f. Remove the aft access plate on the right fillet fairing located between the fuselage and wing.
Remove the aileron and aileron trim pulleys in the wing at station 29.0.
g. Remove the outboard access plate located on the aft side of the wheel well. Remove one screw
from each set of rub blocks at wing station 54.0 and open the blocks enough to allow the cable ends to pass
through.
h. Remove the access plate on the underside of the wing at the trailing edge at station 92.5.
i. Block the trim cables at the screw assembly within the control pedestal and within the wing at
station 96.5 to prevent the cables from unwrapping from their drums by one of the methods shown in
Figure 5-8. (If the trim assembly within the wing is also to be removed, then remove the access plates at
wing station 171.0 and block the cables at the trim screw assembly.)
j. Mark one set of cable ends within the wing at station 90.0 to facilitate installation and disconnect
the cables at the turnbuckles (10).
k. Remove the pulleys within the fuselage at station 102.0 and the cable guard pin at station 124.5
and 163.5.
1. Unbolt the screw assembly from its mounting bracket (12). Remove the screw assembly, drawing
the cables through the control pedestal from the wing and fuselage.
Revised: 9/23/80
SURFACE CONTROLS
PIPER NAVAJO SERVICE MANUAL
1115