Piper Aircraft Corporation PA-28-161 CADET, Руководство по обслуживанию

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g. Remove the nut, pivot bolt (25) and washers that secure the bellcrank. The nut is visible from the
underside of the wing
h. Remove the bellcrank from within the wing.
5-11. INSTALLATION OF AILERON BELLCRANK ASSEMBLY. (Refer to Figures 5-2 and 5-3.)
a. Install the bellcrank pivot bushing (26) with teflon tube (29) in torque tube portion of the bellcrank (6).
b. Place the bellcrank in position in the wing with a washer located between each end of the torque tube and
the mounting brackets.
c. Install the bellcrank pivot bolt (25) with the head up. Install a washer and nut on the bolt, and torque nut
within 20 to 25 inch-pounds. Check that the bellcrank rotates freely with little up-down play.
d. Install and adjust control rod (7) and check aileron travel per Paragraph 5-12.
e. Connect ends of the primary (13 or 17) and balance (18 or 19) control cables along with the aileron
centering plate to the bellcrank using bolts, washers, nuts and cotter pins. Allow the cable ends to rotate freely on
the bellcrank.
f. Tighten the control cables at the balance cable turnbuckle (24) in the floor opening aft of the main spar.
Check cable tension per Paragraph 5-12.
g. Hookup the aileron centering springs from angle assembly to plate.
h. Install the access plate on the underside of the wing and replace the floor panel
5-12. RIGGING AND ADJUSTMENT OF AILERON CONTROLS. (Refer to Figure 5-3)
— NOTE —
Flap adjustment must be completed before starting aileron adjustment.
a. To check and adjust the rigging of the aileron controls, first set the right and left aileron bellcranks at
neutral potion. (Ascertain that the control chains have been rigged per Paragraph 5-6.) This may be
accomplished by the following procedure:
1. Remove the access plate to each aileron bellcrank located on the underside of the wing, forward of the
center aileron hinge by moving the plate attaching screws.
2. Affix a bellcrank rigging tool, as shown in Figure 5-3, between the forward arm of each bellcrank and
the adjacent rib. (This tool may be fabricated from dimensions given in Figure 5-3.) The slotted end of the tool
fits on the arm forward of and adjacent to the primary control cable end. The other end of the tool is positioned
so that the side of the tool contacts the aft side of the bellcrank stop. The bellcrank must be moved to allow a
snug fit of the tool between the bellcrank arm and rib. To do so, it may be necessary to loosen a primary control
cable or the balance cable. The neutral position may also be found by locating the position at which the forward
and aft cable connection holes are an equal distance from the adjacent outboard wing rib.
b. With each bellcrank set at neutral, the ailerons may be checked and adjusted for neutral as follows:
1. Ascertain that the flaps are rigged in accordance with Paragraph 5-37, and in their up locked position.
2. Place the control column tee bar in the full forward position and maintain in this position by use of a
suitable tool, or by placing weights on the aft side of the stabilator, if the stabilator cables have been previously
tensioned.
3. Ascertain that both bellcranks are at their neutral positions.
4. With aileron control rod connected between the bellcrank and aileron, check that the trailing edge of the
aileron is even with the trailing outboard edge of the flaps. Ensure that the flaps are rigged correctly per
Paragraph 5-37. This is the aileron neutral position.
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY 28, 1989 S U R FACE CONTROL
1G8