Control Column Assembly Installation - Piper PA-44-180 SEMINOLE Maintenance Manual

2. To remove tee bar with assembled parts:
A. Remove the access panel 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 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. If the control wheel assemblies have not been previously disconnected from the tee bar assembly,
separate the control wheel tubes at the flexible joints by removing the nuts, washers and bolts.
F. Remove the tunnel plate just aft of the tee bar by laying back enough tunnel carpet to remove the
plate attachment screws.
G. Remove the two aileron control cable pulleys attached to the lower section of the tee bar by
removing the pulley attachment bolt.
H. Disconnect the stabilator control cables from the lower end of the tee bar assembly.
I. Disconnect the necessary control cables, such as the propeller pitch control, mixture control, etc.,
that will allow the tee bar assembly to be removed.
J. Remove the tee bar assembly by removing the attachment bolts with washers and nuts which arc
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 27-6.)
1. To install tee bar assembly:
A. Swing the tee bar assembly into place from the right side of the cabin and secure with attachment
bolts, washers and nuts inserted through each side of the floor tunnel.
B . Connect the stabilator control cables 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 cross-over sprockets. The 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 as given in Figure 27-5. 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.
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 tee bar stops.
I. Set stabilator cable tension with the turnbuckle in the aft section of the fuselage. Check safety of
all turnbuckles upon completion of adjustments.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
1K14
27-10-02
Page 27-12
Revised: June 20, 1995