5. Connect ends of primary and balance control cables to bellcrank using bolts, washers, nuts, and cotter
pins. Allow cable ends to rotate freely on bellcrank.
6. Tighten control cables at balance cable turnbuckle in floor opening aft of main spar. Check cable
tension per Rigging and Adjustment of Aileron Controls.
7. Install access plate on underside of wing and replace floor panel and rear seats.
RIGGING AND ADJUSTMENT OF AILERON CONTROLS (figures 27-5 and 27-6)
—NOTE—
Flap adjustment must be complete before starting aileron
adjustment.
1. Place tee bar in full forward position, and maintain it in this position by use of a suitable tool or, if
Stabilator cables have been previously tensioned, placing weights on aft portion of Stabilator.
2. To check and adjust rigging of aileron controls, set right and left aileron bellcrank at neutral position.
(Ensure that control chains have been rigged per Installation of Control Column Assembly.) Proceed
as follows:
a. Remove access plate to each aileron bellcrank located on underside of wing, forward of iriboard
end of aileron by removing plate attaching screws.
b. Attach a bellcrank rigging tool, as shown in figure 27-5, between forward arm of each bellcrank
and adjacent rib. (This tool can be fabricated from dimensions given in chapter 95.) Slotted end of
tool fits on arm forward of and adjacent to primary control cable end. The other end of tool is
positioned so that side of tool contacts aft side of bellcrank stop. bellcrank must be moved to allow
a snug fit of tool between bellcrank arm and rib. To do so, it may be necessary to loosen a primary
control cable or balance cable. Neutral position of bellcranks is where forward and aft cable
connection holes are an equal distance from adjacent outboard wing rib.
3. With each bellcrank set at neutral, check and adjust ailerons for neutral as follows:
a. Ascertain that bellcrank rigging tool fits snug between bellcrank and rib.
b. Place an aileron rigging tool as shown in figure 27-6 against underside of wing and aileron as
close as possible to inboard end of aileron without contacting any rivets. The tool must be
positioned parallel with wing ribs, with aft end of tool even with trailing edge of aileron. (This tool
can be fabricated from dimensions given in chapter 95.)
c. With aileron control rod connected between bellcrank and aileron, check that surface of wing
contact tool at its forward surface and at spacer, and trailing edge of flap contacts aft end of the
tool. Aileron is neutral at this position.
d. Should three points not contact, loosen jam nut at aft end of control rod and rotate rod until three
points contact. Apply a slight up pressure against trailing edge of aileron while making this
adjustment. After adjustment, retighten jam nut.
4. Adjust primary and balance cable tension as shown in figure 27-4 as follows:
a. Remove two front seats, if desired, and rear seats to facilitate in adjustment.
b. Loosen connecting bolts of idler crossover sprockets at control tee bar to allow chain to fit snugly
around control wheel sprockets and over idler sprockets.
c. Ensure that both bellcranks are at neutral position.
27- 13 - 00
Page 27 - 16
Reissued: August 1, 1986
1K15
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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