Flap Control Rigging And Adjustment - Piper PA-24 Comanche Service Manual

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PIPER COMANCHE SERvtCE MANUAL
5·23. Rigjnl And Adjustment Of Flap Control.
(PA-2~.)
(Refer to FilUre S·5.)
a. Adjust the flap control rodCH)to a \enJth of ',5/16 inch from center hole in rad end bcari,,! to
center hole in fork.
b. With flap push-pull cables disconnetted. adjult the up limit switch
(11)
(rear switch) to obcai.n a
dimension of .375 inch ... . 062 inch betWeen forward face of a'IDIIIlission bousm, and rear edge of the
mnsmission sleeve assembly (%2). MeWe the flap selector swath in the down powon. moviJll the contrOl
arms (14 and 15) away from the up limit swilch (11) until the adjustmCllt screw
is
clear of the up limit
switch. Move the selector switch to the up position and let the
system
deactivate iacif. check the .375 inch
dimension.
NOTE
When detmnining the deflection anile of the flap usc a bubble
protractor. The anpe between tbe aircraft when Icvd and flaps when
th~
are fully retracted should be 13·, when the flaps are fully extended
to 38· the angle should be 51·
*
1· . Mcuumnent of
nap
antIc
is
taken
parallel with and next to the rib
rivetS
23 inches from the inboard end
of the flap.
NOTE
Occasionally flaps arc adjusted to compensate for
wintJ
heavincss with
an adjustment screw loated between the center roller brackets of the
flap. One flap may be adjusted with the tnil.iq edp below the neutnl
position to correct winl heaviness. The maximum distance allowed
below the neutnJ posicion is three turns on the adjusancnt screw. Tbe
screw should be re.djustcd
after.ftI
is completed.
c.
Place the flaps in full up position and adjust the clevis fit'tiDB on the control arms (14 and
1.5)
so
that the clevisbolt may be illllCtted throuah the clevis aDd
th~
slot in the conuol arms (14 and 15). The bolt
should fit snUB acainst the forwani radius of the slot in the control anns (14 and 15). Ascauin that a wire
cannot be inserted throu.h the minimum thread bole of the devil ends both in the cockpit and winp.
Secure
in
position with the jam nuts.
d. With the flaps fully retracted. adjust the step lock release cable within the fuselace so there
is
no
slack in the cable and the step lock cable adjustinl nut (45)
at
the flap to .125 inch mvel 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 thcn tumed out until the down limit switch is activated and then
screwed OUt an additional
1/2
rum. Secure adjustment screw with jam nut. Retract flaps to
dot
adjustmel'lt screw from switch. then extend the flaps allowiftJ the system to deactivate itself and check flap
travel,
f. Position the flaps in the 15 0 extended loacion. 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. Op~tc the flap
system and check for proper operation. Check turnbuckles and push-pull rods for safeties.
SURFACE CONTROLS
ISSUED: 8/18172
IG13