Piper Comanche PA-24 Service Manual page 271

5-13a. Flap Bellcrank Distortion Inspection.
If flaps have been extended at or above V
A. If the paint is cracked or peeling anywhere along the bellcrank, torsional movement has occurred.
B. Remove the paint and inspect for cracks at either arm on the bellcrank shaft near the welds. Use a
dye penetrant method of inspection
1. If cracks are not found, repaint the bellcrank(s) and reinstall.
2. If cracked, replace the bellcrank and inspect the flap system for distortion or damage to the
extension rods and rod ends.
5-14. Installation Of Manually Operated Flap Controls. (Refer to Figure 5-9.)
A. Install the flap bellcrank, secure the pivot bolt to a snug fit and connect the return spring. Ascertain
that the lock operates properly and connect the flap control arm.
B. Draw the right or left control cable into the wing and connect to the bellcrank.
C. Connect the fuselage control cable (40) to the wing cable at the rear seat location and draw the
cable beneath the floor panel to the location of the flap handle (36). Secure cable guards and
pulleys.
D. Install the flap lever and connect the control cable. Rig and adjust per paragraph 5-15.
5-15. Rigging And Adjustment Of Manually Operated Flap Controls.
CAUTION: VERIFY FREE AND CORRECT MOVEMENT OF FLAPS. WHILE IT WOULD SEEM
SELF-EVIDENT, FIELD EXPERIENCE HAS SHOWN THAT THIS CHECK IS
FREQUENTLY MISINTERPRETED OR NOT PERFORMED AT ALL. ACCORDINGLY,
UPON COMPLETION OF FLAP RIGGING AND ADJUSTMENT, VERIFY THAT THE
FLAPS MOVE UP WHEN THE FLAP HANDLE IS PUSHED DOWN; AND, THAT THE
FLAPS MOVE DOWN WHEN THE FLAP HANDLE IS PULLED UP.
A. To adjust flap controls, ascertain that the flap bellcrank catch is engaged. Adjust flap control rod to
allow flap to position in neutral.
B. To obtain specific travel, adjust each flap cable turnbuckle. Check the operation of the flap and that
the flap lock engages properly. Refer to Table V-I for degrees of travel.
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PIPER COMANCHE SERVICE MANUAL
, inspect the flap bellcranks for evidence of distortion.
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V - SURFACE CONTROLS