Piper Comanche PA-24 Service Manual page 276

E. The control cable (5) that is within the fuselage should be connected to the wing cable and flap
transmission actuating arm (15). Install cable pulley(s). On Serial Nos. 24-4000 to 24-4246, 24-
4248 to 24-4299 connect tension spring (42) to the cable end of the left turnbuckle
F. To install the flap return cable (27) in the left wing, enter through the wheel well and place the
return cable through the trailing edge of the wing. Connect the cable to the leading edge of the flap,
raise the flap and connect the return spring (43) to the bracket located at the inboard side of the
wheel well.
G. The combination flap return and step lock assembly (44) in the right wing is installed by entering
through the wheel well and installing the step lock mechanism with the cable wrapped around the
pulley and secured. Insert the cable end to the flap, through the trailing edge of the wing and into
the flap. Start the adjusting nut (45) a few threads onto the cable end. Draw the tension spring (43)
in place at the inboard side of the wheel well. Place the flap retraction cable to the aft side of the
release arm pulley (3). Ascertain that the step lock will disengage and engage when the flap is
retracted.
H. Rig and adjust per Paragraph 5-19 and reinstall access panels, wheel well splash pan, rear seat. etc.
NOTE: Seal exterior access panel with zinc chromate tape applied to panel and fuselage.
5-19. Rigging And Adjusting Of Electrically Operated Flap Contr ols. (PA-24-250 and PA-24-260.)
(Refer to Figure 5-9.)
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 SELECTOR LEVER IS UP; AND, THAT THE FLAPS
MOVE DOWN WHEN THE SELECTOR LEVER IS DOWN.
A. Adjust flap control rod assembly (33) to a length of 5-5/16 inch from center of hole in rod end
bearing to center of hole in the fork.
B. With the cables disconnected at the control arms (14 and 15) adjust the down limit switch (9) so the
actuating screw assembly (22) extends to 14.125
transmission housing to the centerline of the attachment bolt at the lower end of the control arms.
With the actuating screw extended, connect the cable and adjust the turnbuckles to get 32° of flap
deflection. The turnbuckles should be safetied at this time to maintain this adjustment.
Cc. Retract the flaps and adjust the up limit switch (11) to obtain .750 inch
flap cable. (Refer to Figure 5-9, View A-A for proper location and procedure for measuring .750
inch slack.) The left cable will have more slack than the right due to the step lock which is not
installed on the left side. Therefore, it is necessary to hook the cable support spring (42) through the
hole in the inboard cable end terminal. Position the flaps in the 15° extended location. Then adjust
rod (12) so the hand on the flap position indicator on the instrument panel is positioned at the
bottom of the white arc.
D. The step lock cable, at the right flap, may be adjusted by turning adjusting nut (45) until
approximately .125 inch play exists in the flap.
E. Operate the flap system and check for proper operation. Check turnbuckles and push-pull rods for
safeties.
V - SURFACE CONTROLS
PIPER COMANCHE SERVICE MANUAL
± .062 inches measured from forward face of the
1G16
.125 inch slack in the right
±
04/01/09