TM 55-1520-240-23-9
11-189
INSTALL FIRST STAGE MIXING ASSEMBLY
(Continued)
11-189
Make sure bushings are in bellcranks
before installing bolts or damage will
result to bellcranks.
NOTE
Impedance bolts are installed in flight
control connections. These bolts are
self-retaining and require a special
nut and torque (Task 1-13).
INSTALL THRUST, YAW, PITCH INPUT AND ROLL
INPUT BELLCRANKS
1.
Clean adapter (1). Use cloth (E120).
2.
Install narrow bearing surface of adapter (1) in
thrust bellcrank (2).
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 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.
3.
Install yaw bellcrank (3) onto adapter (1).
4.
Clean adapter (4). Use cloth (E120).
5.
Install adapter (4) in bellcrank (3).
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