5-19. INSTALLATION OF STABILATOR TRIM ASSEMBLY. (FORWARD) (Refer to Figure 5-6.)
a. The trim control wheel with drum may be installed by the following procedure:
1. Wrap the right trim cable on the trim drum by inserting the swaged ball of the cable in the slot provided
in the side (right side) of the drum that mates with the control wheel, and looking at this side, wrap the drum with
three wraps of the cable in a clockwise direction.
2. Attach the control wheel to the cable drum by aligning the long lug of the drum with the long slot of the
wheel and pushing the two pieces together.
3. Wrap the left trim cable on the drum by inserting the swaged ball of the cable in the slot provided in the
flanged side (left side) of the drum and looking at this side, wrap the drum with three wraps of the cable in a
clockwise direction.
4. Lubricate and install the bushing in the control wheel and drum.
5. Align the control cables and position the control wheel assembly between its mounting brackets.
Ascertain that the end of the trim indicator wire is positioned in the spiraled slot of the drum with no bind on the
end. Install the retainer bolt from the left side and install washer and nut
6. Install the cover over the control wheel and secure with screws, unless the control cables have yet to be
installed.
b. The trim control cables may be installed by the following procedure.
1. Draw the cable(s) through the floor tunnel.
2. Wrap the cable drum and install the trim control wheel as given in step a.
3. Position the cable pulleys on their mounting bracket within the floor tunnel and install the clevis pin,
washer and cotter pin.
4. Connect the cable to the aft cable at the turnbuckle in the aft section of the fuselage. Install aft cable if
not installed.
5. If not previously installed, install the pulleys in the aft lower section of the fuselage at station 156.5
forward of the cable turnbuckles.
6. Install the cable guard at the underside of the pulleys located just aft of the flap torque tube at station
127.25 and secure.
7. Install the cable rub blocks located on the aft side of the main spar housing and secure with screws.
8. Remove the blocks that secure the aft trim cable and check that the cables are seated on their pulleys.
c. Set cable tension and check rigging and adjustment per Paragraph 5-22. Check safety of all turnbuckles.
d. Install the tunnel cover on the tunnel and secure with screws.
e. Install the carpet over the floor tunnel.
f. Install the cover over the trim control wheel and secure with screws and special washers.
g. Install the floor panel and seat belt attachments aft of the main spar and secure panel with screws.
h. Install the panel to the aft section of the airplane and the seats.
5-20. REMOVAL OF STABILATOR TRIM ASSEMBLY. (AFT) (Refer to Figure 5-6.)
a. Remove the access panel to the aft section of the fuselage.
b. Block the trim cables at the first set of pulleys (33) forward of the cable turnbuckles (10 and 11) in the aft
section of the fuselage by method shown in Figure 5-7.
c. Disconnect the cable (12) at the turnbuckles (10 and 11) in the aft section of the fuselage.
d. Remove the tail cone by removing its attaching screws.
e. Disconnect the link (25) between the trim screw (23) and the trim control arm (28) by removing the nut,
washer and bolt (24) that connects the link to the screw.
removing the four attaching nuts, washers and bolts.
i. Draw the trim cable (12) from the fuselage
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY 28, 1989
S U R FACE CONTROL
1G15
