Piper PA-28-161, Maintenance Manual

Page: 395 / 1104

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 3
Nov 30/06 2I21
27-50-00
(2) Remove the flap control cable (23) by the following procedure:
(a) Remove the seats floor panel. Remove the seats.
(b) Disconnect the flap tension spring (22) from the cable, if not previously disconnected, by
extending the flaps to relieve spring tension.
(c) Retract the flap. Use caution as forward pressure will be on the handle with the spring
disconnected.
(d) Disconnect the cable from the chain (20) by removing cotter pin, nut, clevis pin and
bushing (21).
(e) Remove the flap handle bracket and cover.
(f) Lift the aft section of the tunnel carpet far enough to remove the screws securing the
tunnel cover that is between the flap handle and the spar cover. Remove the cover.
(g) Remove the cotter pin guard from the flap cable pulley (24) located inside the floor tunnel
just ahead of the spar housing.
(h) Remove the cable rub blocks located in the floor opening on the aft side of the spar
housing by removing the attaching screws.
(i) Disconnect the cable turnbuckle (25) at the flap handle by removing cotter pin, nut and
bolt (26). Check clevis bolt (26) for wear. Replace bolt if any wear is evident.
(3) Remove the flap handle (29) and bracket (28) by disconnecting the cable turnbuckle from the
handle and removing the bolts securing the bracket to the floor tunnel.
B. Installation (Refer to Figure 1.)
(1) Install flap torque tube assembly using the following procedure:
(a) Install the chain sprocket (17) with chain (20 and 30) on the torque tube (14) and secure
with bolts, washers and nuts (18).
(b) Slide the tube stop fittings (13) on their respective ends of the torque tube.
(c) Check that one bearing block fitting (7) is installed between its attachment brackets (6).
(d) Slide the other bearing block over its respective end of the torque tube.
(e) Position the torque tube by placing the end with the bearing block on it between the
mounting bracket and sliding the other end into the previously attached bearing block.
(f) Position the remaining bearing block and secure with bolts, washers and nuts (5).
(g) Push the torque tube cranks (arms) (11) on each end of the torque tube and slide the stop
fitting (13) in place. Align the bolt hole of the crank and stop fitting with the holes in the
torque tube and install bolts. The holes in the stop fitting are elongated to allow the stop
fitting to be pushed against the bearing blocks (7) thus allowing no side play of the
assembly. Tighten the bolt assemblies (10) on the stop fittings.
(h) Install the tube support blocks (16 and 31) on their support brackets (19) and secure with
bolts (15).
(i) Connect the flap return spring (32) to the return chain (30) and/or at the spar housing.
(j) Connect the control cable end to the tension chain (20) and secure with bushing, clevis
bolt, nut and cotter pin.
(k) Pull the flap handle full back and connect the tension spring (22). Release the flap handle
to the forward position.
(l) Connect the flap control tube (4) to the flap and/or torque tube crank (11) and secure. The
bolt (12) and bushing that connects the control tube to the crank is installed through a
hole in the side of the fuselage located over the torque tube.