1. Insert stabilator in position and install attaching hinge bolts, washers, and nuts.
2. Move trim assembly through cutout in stabilator and attach brackets of assembly to aft bulkhead with
bolts, washers, and nuts. Insert trim cable ends into fuselage.
3. Attach stabilator control cables to stabilator balance arm with clevis bolts, bushings, washers, nuts, and
cotter pins.
4. Connect ends of fore and aft trim cables at turnbuckles within aft section of fuselage.
5. Remove cable block from trim control cable within fuselage.
6. Set stabilator control cable tension and check rigging and adjustment according to Rigging and
Adjustment of Stabilator, chapter 27.
7. Remove cable blocks from trim cable at barrel of trim screw assembly.
8. Set stabilator trim control cable tension and check rigging and adjustment according to instructions in
chapter 27 and tab control arm to trim screw, with connecting links of control arm, with bolt, bushings,
washers, and nut. Ensure that tab attachment bolt head is on side next to trim indicator cable to ensure
no interference with indicator cable.
9. Remove pad from aft section of fuselage and replace access panel.
10. Install tail cone fairing and remove tail stand.
STABILATOR TRIM TAB
REMOVAL OF STABILATOR TRIM TAE} (figure 55-1)
1. Disconnect stabilator trim control rod by removing bolts that attach control rod to stabilator trim tab.
2. Remove stabilator trim hinge pins by cutting one end of wire pins and removing.
3. Remove stabilator trim tab.
INSTALLATION OF STABILATOR TRIM TAB (figure 55-1)
1. Place trim tab in position on aft end of stabilator.
2. Insert new pins and secure by bending end to a 45 degree angle.
3. Install control rod and attach with four bolts and washers.
CHECKING STABILATOR SURFACES FREE PLAY
The following checks are recommended before balancing to check the amount of free play in the stabilator,
stabilator trim tab, and aileron:
1. Stabilator: Check 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.
2. Stabilator Trim Tab:
a. Set stabilator trim tab in neutral position. This neutral position is determined with airplane
properly rigged (refer to chapter 27) and trim indicator at neutral position.
b. Obtain a straightedge long enough to extend from ground up to a few inches above trim tab
trailing edge.
c. Place straightedge next to trim tab inboard (center) trailing edge, secure stabilator in neutral
position and grasp tab.
d. Gently move tab up and down. Mark limit of tab free play on straightedge.
e. Overall travel (free play) must not exceed 0.15 of an inch. The use of a dial indicator and fixed
stand is recommended.
55 - 23 - 00
Page - 55-02
Reissued: August 1, 1986
2F24
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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