Piper Aircraft Corporation Cherokee 140 PA-28-140, Service Manual

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PIPER CHEROKEE SERVICE MANUAL
V - SURFACE CONTROLS 01/31/08
2A18
5-6. INSTALLATION OF CONTROL COLUMN ASSEMBLY. (Refer to Figure 5-1 or 5-2.)
a. The tee bar assembly may be installed in the airplane by the following procedure:
1. Swing the tee bar assembly into place from the right side of the cabin and secure with
attaching bolts (15), washers and nuts inserted in through each side of the floor tunnel.
2. Connect the stabilator controls (11) to the lower end of the tee bar with bolt, washer, nut and
cotter pin (16). Allow the cable ends free to rotate.
3. Place the aileron control cables (12) around the pulleys (13) that attach to the lower section of
the tee bar (5), position pulleys and secure with bolt, washers and nut (14).
4. Install the control wheel per step b.
5. Place the control wheels in neutral (centered) position and install the aileron control chains (7
and 8) on the control wheel sprockets (17 and 18) and idler crossover sprockets (19 and 21).
This turnbuckle (9) must be centered between the two control wheel sprockets.
6. Loosen the connecting bolts (22) of the idler sprockets (19 nd 21) to allow the chain to fit snug
around the control wheel sprockets and over the idler sprockets.
7. Connect the aileron control cables (12) to the ends of the chains (7 and 8) with bolts, bushings,
nuts and cotter pins (10).
8. Adjust the chain turnbuckle (9) between the two control wheel sprockets to allow the control
wheels to be neutral and obtain proper cable tension as given in Table V-II. It may be
necessary, in order to have both control wheels neutral, to set the chain turnbuckle to neutralize
the wheels and then set cable tension with the turnbuckles located under the floor panel aft of
the main spar as instructed in paragraph 5-12. Before safetying the turnbuckle, check that
when the ailerons are neutral, the control wheels will be neutral and the chain turnbuckle
centered. Also, the aileron bellcranks should contact their stops before the control wheel hits
its stop. Maintain .030 to .040 clearance between sprocket pin and adjustable stop bolts on
models having adjustable aileron tee bar stops.
9. Set stabilator cable tension with the turnbuckle in the aft section of the fuselage and
instructions given in paragraph 5-17. Check safety of all turnbuckles upon completion of
adjustments.
10. Tighten the connecting bolts (22) of the idler sprockets (19 and 21). (Torque 45 ± 5 in.-lbs.)
11. Install the floor tunnel plate trim covers by the following procedure:
(a) PA-28-140; PA-28-150, -160, -180; and PA-28R: Place the tunnel plate into position for
installation and secure with the appropriate screws. Roll the carpet into place and install
the rudder trim cover and knob.
(b) PA-28-235: Install the floor tunnel plate and secure with the appropriate screws. Fasten the
tunnel carpet into place and install the fuel selector lever on the selector torque tube and
secure with a clevis pin and cotter pin. Replace the fuel selector and rudder trim knob.
b. Either control wheel assembly may be installed by the following procedure:
1. Insert the control wheel tube through the instrument panel.
2. Should wires for the various Autopilot systems need to be installed in the control tube, route
them through the hole in the forward side of the tube and out of the small hole in the forward
side. Position the rudder grommet in the hole in the side of the tube.
3. On the left control tube install the stop (6).