Piper COMANCHE PA-24-180 Service Manual page 155

PIPER COMANCHE SERVICE MANUAL
5-19. Rigging And Adjusting Of Electrically Operated Flap Controls.(PA-24-250 and PA-24-260.) (Refer
to Figure 5-5.)
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 * .062 inches measured from forward face of the
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
c. Retract the flaps and adjust the up limit switch (11) to obtain .750 inch .125 inch slack in the
right flap cable. (Refer to Figure 5-5, View A-A for proper location and procedure for measuring .70 inch
slack) The left able 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 postion indicator on the instrument panel is positioned at the bottom of the white arc.
d.
The step lock cable, a the right flap, may be adjusted by turning adjusting nut (45) until
approximately .12 inch play exists in the flap.
e. Operate the flap system and check for proper operaion. Check turnbuckles and push-pull rods for
safeies.
NOTE
When determining the deflection angle of the flap use a bubble
protractor. The angle between the aircraft leveling lugs and the flaps
when they are fully retracted should be 13, when the flaps are fully
extended to 32
the angle should be 45. Tolerances are
*
2.
Measurement of flap angle is taken parallel with and next to the rib
rivets 23 inches from the inboard end of the flap.
NOTE
Occasionally flaps are adjusted to compensate for wing heaviness with
an adjustment screw located between the center roller brackets of the
flap. One flap may be adjusted with the trailing edge below the neutral
position to correct wing heaviness. The maximum distance allowed
below the neutral position is three turns on the adjustment screw. The
screw should be readjusted after rigging is completed.
SURFACE CONTROLS
ISSUED: 8/18/72
1G11