TM 55-1520-240-23-9
11-249
INSTALL AFT FUSELAGE BELLCRANK (FORWARD SIDE STATION 482
BULKHEAD)
(Continued)
11-249
FLIGHT SAFETY PARTS
This is an installation critical flight
safety part. All aspects of its assembly
and installation must be ensured at
each joint connection and mounting to
the airframe.
Ensure that all bushings are properly
installed (including orientation) in
each input and output clevis of the
bellcrank.
Ensure bellcrank hub bearings are
serviceable and properly installed.
Ensure proper orientation of the
bellcrank assembly at installation.
Ensure proper attaching hardware
(impedance type bolt, nut, and
washers) is installed including
verification of bolt head orientation,
torque, and installation of cotter pins.
Loose attachments within flight control
primary linkage will degrade aircraft
control. Missing components will
cause loss of control.
Without 64 , bellcrank must be
positioned as indicated by arrow and
word UP and THIS SIDE FWD on the
long end of the bellcrank with flat side
forward; otherwise, serious damage
to components can occur. With 64 ,
bellcrank must be positioned as
indicated by the arrow and the words
UP and THIS SIDE FWD on the long
end of the bellcrank with the flat side
forward, also on the long end side of
the bellcrank, the arrows and words
UP and FWD indicate position. The
bellcrank also must have the clevis
with one edge closed out positioned
UP, with close out FWD.
7.
Position link (6) in lower lugs (7), forward side of
bellcrank (5).
8.
Install bolt (4), two washers (3 and 2) and nut
(1) in bellcrank (5).
9.
Torque nut (1) to 60 to 90 inch-pounds. Install
cotter pin (8).
10.
Remove nut (17), two washers (18 and 19), and
bolt (20) from bellcrank (21).
11.
Position link (6) in bellcrank (21). Install bolt (20),
two washers (19 and 18), and nut (17).
12.
Torque nut (17) to 60 to 90 inch-pounds. Install
cotter pin (22).
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