5-22. RIGGING AND ADJUSTMENT OF STABILATOR TRIM. (Refer to Figure 5-6.)
a. Level the airplane. (Refer to Leveling, Section II.)
b. Check for proper stabilator trim cable tension as given in Table V-I. If cables were disconnected, rotate
control wheel several times to allow the cables to seat and recheck tension.
c. Secure the stabilator in neutral position. To find neutral, place a rigging tool on the upper surface of the
stabilator as shown in Figure 5-5. Zero a bubble protractor, set it on the rigging tool and tilt the stabilator until
the bubble is centered.
the plate (17) on the horizontal support rib (16) of the trim assembly. If the stop is not contacting the plate, the
links (25) between the screw (23) and the trim control arm (28) are not disconnected, disconnect the two by
removing the connecting nut, washers and bolt (24). With the turnbuckle still at the two inch dimension from the
pulley, turn the screw down until the pin contacts the plate.
g. Connect the links to the trim screw and secure with bolt, washers and nut.
h. Turn the trim control wheel until the trim tab streamlines with the neutral stabilator.
i. Check the bubble of the protractor over the neutral tab and then check tab travels as given in Table V-I.
The degree of travel on the protractor is determined by taking the difference between the protractor reading at
neutral and up, and neutral and down. The bubble must be centered at each reading with the airplane level.
(26) and turning the end in or out as required. Reconnect links to rod end.
k. Secure the jam nut (27) on the actuating arm rod end.
l. Turn the trim wheel to full travel and check for turnbuckle clearance interference between turnbuckles and
pulleys, and location of tab indicator.
5-23. RUDDER AND STEERING PEDAL ASSEMBLY.
5-24. REMOVAL OF RUDDER AND STEERING PEDAL ASSEMBLY. (Refer to Figure 5-8.)
a. Remove the access panel to the aft section of the fuselage.
b. Relieve rudder and stabilator cable tension by loosening one of the rudder and stabilator cable turnbuckles
in the aft section of the fuselage.
c. Remove the tunnel plate located just aft of the tee bar by removing the rudder trim control knob and trim
cover attaching screws. Roll back the carpet from the tunnel and remove the tunnel plate that is located just aft of
the tee bar assembly by removing the plate attaching screws.
d. Disconnect the stabilator control cable from the lower end of the tee bar assembly.
e. Remove the tee bar attaching bolts with their washers and nuts which are through each side of the floor
tunnel. Pull the lower end of the tee bar aft.
g. Disconnect the rudder trim from the torque tube assembly removing the cotter pin, washers and bolt that
connects the arm to the trim.
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY 28, 1989
S U R FACE CONTROL
1G18
