Piper COMANCHE PA-24-180 Service Manual page 157

PIPER COMANCHE SERVICE MANUAL
5-23. Rigging And Adjustment Of Flap Control (PA-24400.) (Refer to Figure 5-5.)
a. Adjust the flap control rod(33)ro a length of 5-5/16 inch from center hole in rod end bearing to
center hole in fork.
b. With flap push-pull cables disconneced, adjust the up limit switch (11) (rear switch) to obtain a
dimension of .375 inch ± .062 inch between forward face of tnnrmilion
housing and rear edge of the
transmission sleeve asembly (22). Move the flap selector swich in the down postion, moving the control
znms (14 and 15) away from the up limit switch (11) until the adjustment screw is clear of the up limit
switch. Move the seector switch to the up position and let the system deactwate itsf, check the .375 inch
dimension.
NOTE
When determining the deflection angle of the flap use a bubble
protractor. The angle between the aircraft when level and flaps when
they are fully retracted should be 13'. when the flaps are fully extended
to 38 the angleshould be 51 * 1. Meaurement of flap anle is taken
parallel with and next to the rib rivers 23 inches from the inboard end
of the flap.
NOTE
Occasionally flaps re adjusted to compensate for wing heaviness with
an adjustment screw located between the center roller bracket 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.
c. Place the flaps in full up position and adjust the clevis fitting on the control arms (14 and 15) so
that the clevis bolt may be inserted through the clevis and the slot in the control arms (14 and 15). The bolt
should fit snug against the forward radius of the slot in the control arms (14 and 15). Ascertain that a wire
cannot be inserted through the minimum thread hole of the clevis ends both in the cockpit and wings.
Secure in position with the jam nuts.
d. With the flaps fully retracted, adjust the step lock release cable within the fuselage so there is no
slack in the cable and the step lock cable adjusting nut (45) at the flap to .125 inch travel in the flap.
e. To make the flap down adjustment, run the flaps to a measured 38 down position. The down
limit switch (9) adjustment screw is then tumed our until the down limit switch is activated and then
screwed out an additional 1/2 urn. Secure adjustment screw with jam nut. Retract flaps to clear
adjustment screw from switch, then extend the flaps allowing the svstem to deactivate itself and check flap
travel.
f.
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. Operate the flap
system and check for proper operation. Check rumbuckles and push-pull rods for safeties.
SURFACE CONTROLS
ISSUED: 8/18/72
1G13