4-58. BALANCING AILERONS. (Refer to Figure 4-12.)
Position the aileron on the balancing fixture in a draft free area and in a manner which allows unrestricted
movement of the aileron. Place the tool on the aileron, avoid rivets and keep the beam perpendicular to the hinge
centerline. Calibrate the tool as described in Paragraph 4-57. Read the scale when the bubble level has been
centered by adjustment of the movable weight and determine the static balance. If the static balance is not within
the limits specified in Table IV-I, proceed as follows:
a. Leading Edge Heavy: This condition is highly improbable; recheck measurements and calculations.
b. Trailing Edge Heavy: It will be necessary to determine the exact cause of the underbalance. If the aileron
is too heavy because of paint build-up, it will be necessary to strip all paint from the aileron and repaint. If the
aileron is too heavy resulting from repair to the skin or ribs, it will be necessary to replace all damaged parts and
recheck the balance.
THIS SPACE INTENTIONALLY LEFT BLANK
Figure 4-12. Aileron Balance
A125
LEVEL SUPPORT
BALANCE TOOL - REFER
TO FIGURE 4 - 19
HOLDING FIXTURE
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
STRUCTURES
1F12
Issued: FEBRUARY. 28, 1989
