Piper Aircraft Corporation Cherokee 140 PA-28-140, Service Manual

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PIPER CHEROKEE SERVICE MANUAL
V - SURFACE CONTROLS 01/31/08
2C10
5-41. WING FLAP CONTROLS.
5-42. REMOVAL OF WING FLAP CONTROLS. (Refer to Figure 5-17.)
a. The flap torque tube assembly may be removed by the following procedure:
1. Remove the access plate located between the underside of the aft section of each wing and the
fuselage by removing attaching screws.
2. Remove the two front seats and the bottom half of the rear seat or floor panel, whichever applies.
3. Disconnect the left and right flap control tubes (rods) (4) at the flaps by removing the nuts,
washers and bolts (2) or at the torque tube cranks (arms) (11) by removing the bolts (12) and
washers from the inner side of each crank. It will be necessary to remove bolt through a hole in
the side skin of the fuselage located over the torque tube with the flap handle moved to its 40
degree position.
4. With the flap handle (29), fully extend the flaps and disconnect the flap tension spring (22) at
the spar or the aft end of the control cable (23), as desired.
5. Grasp the flap handle, release the plunger (33) and allow the flap to return to the retracted
position. Use caution as forward pressure will be on the handle with the tension spring
disconnected.
6. Disconnect the flap return spring (32) at the spar or return chain (30), as desired.
7. Disconnect the control cable from the chain (20) by removing cotter pin, nut and clevis bolt (21).
8. Remove the tube support blocks (16 and 31) by removing the block attaching bolts (15).
9. Remove the nuts, washers and bolts (10) securing the right and left cranks ( 1) and stop fittings
(13) on the torque tube.
10. From between each wing and the fuselage, remove the cranks from the torque tube.
11. Disconnect one bearing block (7) from its mounting brackets (6) by removing nuts, washers
and bolts (5).
12. Slide the tube from the bearing block still attached to its brackets; raise the end and lift it from
the floor opening.
b. The flap control cable (23) may be removed by the following procedure:
1. If the front seats and bottom of the rear seat have not been removed, remove the seats.
2. Disconnect the flap tension spring (22) from the cable, if not previously disconnected, by
extending the flaps to relieve spring tension.
3. Retract the flap. Use caution as forward pressure will be on the handle with the spring
disconnected.
4. Disconnect the cable from the chain (20) by removing cotter pin, nut, clevis pin and bushing (21).
5. Remove the flap handle bracket and cover.
6. 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.