Installation Of Aileron Trim Assembly (Wing); Removal Of Aileron Trim Sender Assembly; Installation Of Aileron Trim Sender Assembly; Rigging And Adjustment Of Aileron Trim - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
e. Reach through the access opening at wing station 1 17.50, remove one screw from each set of rub
blocks and open the blocks enough to allow the cable ends to pass through.
f.
Remove the cable guard pin within the wing at station 150.00.
g.
Disconnect the electrical leads to the trim indicator sender.
h. Remove the cap bolts (42) that attach the screw assembly to the spar and remove the assembly
from the wing.
5-18. INSTALLATION OF AILERON TRIM ASSEMBLY (Wing). (Refer to Figure 5-3.)
a.
Ascertain that the trim cable assembly is evenly wrapped (centered) on the drum, the drum
centered between the stops on the trim screw and the cables blocked to prevent them from unwrapping.
b. Position the screw assembly in the wing, install the attachment cap bolts (42) and torque.
c.
Draw the cables through the wing and connect them at the tumbuckles (10) at wing station
90.00. (If the cables from the fuselage are not installed, block the cables at the rib at wing station 87.50 by
reaching through the access opening at wing station 92.50.)
d. Remove the cable blocks next to the trim screw assembly and trim cables leading from the
fuselage.
e. Connect the control rod (5) to the trim screw (44).
f. Connect the electrical leads to the trim indicator sender.
g. Install the cable guard pin at wing station 150.00.
h.
Close the rub blocks at wing station 117.50 and secure.
i.
If the complete cable system is installed. set cable tension with the turnbuckles (10) at wing station
90.00 per Table V-II and check rigging and adjustment per paragraphs 5-21 and 5-22.
j. Install access plates.
5-19. REMOVAL OF AILERON TRIM SENDER ASSEMBLY. (Refer to Figure 5-3.)
a. Remove the two access plates located on the underside of the wing at station 171.00
b. Disconnect the electrical leads to the sender (37).
c. Disconnect the sender arm (36) from the sender shaft (33) and turn the arm to allow it to
separate from the connector rod (35).
d.
Remove the sender (37) from its mounting bracket (38).
5-20. INSTALLATION OF AILERON TRIM SENDER ASSEMBLY. (Refer to Figure 5-3.)
a.
Install the sender unit (37) on its mounting bracket (38) by placing the index tab on the sender
into the index slot in the bracket. Secure the sender.
b.
Insert the end of the connector rod (35) on the sender arm (36), install the arm on the shaft (33)
of the sender and leave arm free to rotate until sender is rigged to the trim indicator.
c.
Connect the electrical leads to the sender.
d. Rig sender unit per paragraph 5-22.
e. Install access plates.
5-21. RIGGING AND ADJUSTMENT
OF AILERON TRIM. (Refer to Figure 5-3.)
a. To adjust the aileron trim, it must be ascertained that the following has been accomplished either
during installation or as a preadjustment check.
1.
Trim cables are evenly wrapped (centered) on their drums, both in the control pedestal and
in the wing and both cable turnbuckles (10) are located approximately at wing station 90.00.
2.
The trim drum (40) in the wing is centered between the stops of the trim screw (49).
3.
Cable tension set per specifications given in Table V-Il.
b.
Remove the access plates on the underside of the right wing at stations 92.50 and 171.00.
Reissued: 9/23/80
SURFACE CONTROLS
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