Piper Arrow IV, Руководство по обслуживанию

Страница: 246 / 752

2. The tee bar with assembled parts may be removed from the airplane by the following procedure:
A. Remove the access panel or door to the aft section of the fuselage.
B. Relieve cable tension from the stabilator control cables at one of the stabilator cable turnbuckles in
the aft section of the fuselage.
C. Relieve tension from the aileron control cables and chains and at the turnbuckle that connects the
chains at the top of the tee bar.
D. Disconnect the control chains from the control cables where the chains and cables join by
removing the cotter pins, nuts, bolts and bushings.
E. Remove the tunnel cover by the following procedure:
(1) Remove the rudder trim covers by removing the knobs and the attaching screws. Remove the
tunnel plate, located just aft of the tee bar, by laying back enough tunnel carpet to remove the
plate attaching screws.
F. Remove the two aileron control cable pulleys attached to the lower section of the tee bar by
removing the pulley attaching bolt.
G. Disconnect the stabilator controls from the lower end of the tee bar assembly.
H. Disconnect the necessary controls, such as the mixture control, throttle control, etc., that will allow
the tee bar assembly to be removed.
I. Remove the tee bar assembly by removing the attaching bolts with washers and nuts, which are
through each side of the floor tunnel, and lifting it up and out through the right side of the cabin.
INSTALLATION OF CONTROL COLUMN ASSEMBLY. (Refer to Figure 27-2.)
1. The tee bar assembly may be installed in the airplane by the following procedure:
A. Swing the tee bar assembly into place from the right side of the cabin and secure with attaching
bolts, washers and nuts inserted in through each side of the floor tunnel.
B. Connect the stabilator controls to the lower end of the tee bar with bolt, washer, nut and cotter pin.
Allow the cable ends free to rotate.
C. Place the aileron control cables around the pulleys that attach to the lower section of the tee bar,
position pulleys and secure with bolt, washers and nut.
D. Install the control wheel per Step 2.
E. Place the control wheels in neutral (centered) position and install the aileron control chains on the
control wheel sprockets and idler crossover sprockets. This turnbuckle must be centered between
the two control wheel sprockets.
F. Loosen the connecting bolts of the idler sprockets to allow the chain to fit snug around the control
wheel sprockets and over the idler sprockets.
G. Connect the aileron control cables to the ends of the chains with bolts, bushings, nuts and cotter
pins.
H. Adjust the chain turnbuckle between the two control wheel sprockets to allow the control wheels
to be neutral and obtain proper cable tension. 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 Rigging and
Adjustment of Aileron Controls. 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.
27-05-02
Page 27-11
Revised: February 23, 1979
1K6
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL