Piper PA-28-161, Maintenance Manual

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PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 1
Nov 30/06 4F5
55-20-00
STABILATOR
CAUTION: CONTROL SURFACE SKINS MUST BE REPLACED IF THEY SUSTAIN DAMAGE OR
EXHIBIT CRACKS. LIMITED REPAIRS TO STABILATOR BOTTOM SKINS ARE
AUTHORIZED ONLY AS PROVIDED IN THIS MANUAL.
1. Checking Free Play
A. Stabilator
Check the stabilator for any free play at its attachment points by grasping each half near the tip and
gently trying to move it up and down, fore and aft, and in and out. No play is allowed.
B. Stabilator Trim Tab
Set the stabilator trim tab in neutral position. This neutral position is determined with the airplane
properly rigged per instructions given in 27-30-00 and the trim indicator at its neutral position.
Obtain a straightedge long enough to extend from the ground up to a few inches above the trim tab
trailing edge. Place the straightedge next to the trim tab inboard (center) trailing edge, secure the
stabilator in neutral and grasping the tab, gently move it up and down, mark the limit of tab free play
on the straightedge. The overall travel (free play) must not exceed 0.15 of an inch. The use of a dial
indicator and fixed stand is recommended.
C. Should free play exceed the limits stated, make the necessary repairs as required to eliminate
excessive free play.
2. Stabilator (Refer to Figure 1 and 55-00-00, Figure 1.)
A. Removal
CAUTION: AT EACH REMOVAL OF THE STABILATOR, CONDUCT ATTACH BRACKETS
CORROSION CONTROL INSPECTION, BELOW.
CAUTION: BEFORE ENTERING THE AFT PORTION OF THE FUSELAGE, ATTACH A STAND
TO THE TAIL SKID FOR SUPPORT; AND WITH THE USE OF A HEAVY PAD,
PROTECT THE INSIDE OF THE FUSELAGE. BE CERTAIN TO DISTRIBUTE
WEIGHT ON TOP OF THE BULKHEADS SO AS NOT TO DAMAGE THE FUSELAGE
SKIN.
CAUTION: SHOULD IT BE NECESSARY TO MOVE THE RUDDER TO ITS EXTREME LEFT OR
RIGHT FOR CLEARANCE, DO SO WITH THE USE OF THE RUDDER PEDALS OR
TOW BAR.
(1) Remove the screws from around the upper and lower tail cone fairing assembly and remove
the fairings separately.
(2) Block the trim cable at the barrel of the trim screw assembly to prevent the cable from
unwrapping.
(3) Remove the access panel to the aft section of the fuselage located at the back wall of the
baggage compartment.
(4) Install cable blocks, as illustrated in Figure 1, on the stabilator trim control cable at the first set
of pulleys forward of the cable turnbuckles to prevent the forward cable from unwrapping.
(5) Disconnect the trim cables at the turnbuckles within the aft section of the fuselage.
(6) Relieve tension from the stabilator control cables by loosening one of the cable turnbuckles in
the aft section of the fuselage.
(7) Disconnect the stabilator control cables from the stabilator balance arm by removing cotter
pins, nuts, washers, bushings and clevis bolts.