TM 55-1520-240-23-9
11-191
INSTALL SECOND STAGE MIXING ASSEMBLY
(Continued)
11-191
20.
Have helper lift bellcrank (26) to full up position.
21.
Position spacer (31) between bellcrank (26) and
fitting (32).
22.
Slide shaft (25) through spacer (31) and into
fitting (32).
23.
Align hole in shaft (25) with hole (33) in fitting
(32).
NOTE
Top and bottom holes in shaft are
aligned.
24.
Install bolt (34), two washers (35 and 36), and
nut (37). Torque nut 30 to 45 inch-pounds.
Install cotter pin (38).
25.
Torque nut (39) to 720 inch-pounds, then back
off nut. Torque nut to 360 to 420 inch-pounds.
Install cotter pin (40). If cotter pin cannot be
installed, add washer under nut, and repeat step.
26.
Check bellcranks (17, 23, 26, and 28). Bellcranks
shall be free to move through full range of travel.
INSTALL FORWARD UPPER BELLCRANK
27.
Remove nut (41), two washers (42 and 43), and
bolt (44) from support (45).
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.
28.
Position forward upper bellcrank (46), in support
(45), upper arm (47) to left and both arms
pointing forward.
29.
Install bolt (44), two washers (43 and 42) and nut
(41). Torque nut 60 to 90 inch-pounds. Install
cotter pin (48).
30.
Check bellcrank (46). Bellcrank shall be free to
move through full range of travel. Remove tag.
11-777
