Piper Comanche PA-24 Service Manual page 233

3. (PA-24-180, 230 and 260) After complying with steps (1) (2) and both the NOTE and
CAUTION proceed as follows:
a. Level the aircraft and set the trim tab in neutral position.
b. The control arm must be connected between the stabilator trim tab horns and the trim tab
adjustment mechanism.
c. Add weight links, P/N 81262 and/or 21564, as necessary, or decrease weight by drilling
balance weight in designated area. (Refer to Figure 4-7c.)
d. Check the stabilator throughout its complete travel (trailing edge up, down, center, etc.), it
should not move from any position it is placed in when properly balanced.
4. (PA-24-400) After complying with steps (1) (2) and both the NOTE and CAUTION proceed as
follows:
a. Disconnect the tab control arm from the tab horn.
b. Align the tab and stabilator trailing edges, use a small piece of tape to hold tab in place.
NOTE: Maximum acceptable tab trailing edge misalignment is .129 of an inch.
c. Place a master check weight, P/N 23541 (2 lbs. 13.25 oz.) on top of the stabilator balance
weight with the check weight tab facing aft. (Refer to Figure 4-7c.)
d. Balance the stabilator by installing balance weight plates, P/N 23179, until it is
completely balanced. The stabilator should not move from any position (trailing edge up,
down, center, etc.) it is placed in when properly balanced.
e. Evenly distribute weights on both sides of the arm, remove master check weight and
connect controls.
5. (PA-24-250 and 260 with stabilator tip weights)
a. Level the aircraft and set the trim tab in neutral position
b. The control arm must be connected between the stabilator trim tab horns and the trim tab
adjustment mechanism.
c. Add weight links, P/N 81262 and/or 21564, as necessary, or decrease weight by drilling
balance weight in the designated area. (Refer to Figure 4-7c.)
d. Check the stabilator throughout its complete travel (trailing edge up, down, center, etc.), it
should not move from any position it is placed in when properly balanced.
CAUTION: UPON COMPLETION OF INSTALLATIONS AND ADJUSTMENTS,
e. Remove the center balance weight and all attaching hardware (nut, bolts, washers and
balance plates) with the exception of the control cable attaching hardware, and weigh the
removed items. The weight limits of the combined removed items are 3 pounds 15 ounces
maximum to 3 pounds 8 ounces minimum. Should these limits be exceeded, it will be
necessary to locate the problem and correct it prior to flight
NOTE: Problems may arise from previous improper maintenance and or repairs, such as
04/01/09
PIPER COMANCHE SERVICE MANUAL
BEFORE ANY FLIGHT TESTS, CHECK THAT ALL CONTROLS ARE
HOOKED UP AND RIGGED PROPERLY, TURNBUCKLES, BOLTS,
ETC., ARE SAFETIED AND PANELS AND PLATES ARE SECURED.
excessive use of putty, wrong components, etc.
1F1
IV - STRUCTURES