TM 55-1520-240-23-4
5-112
INSTALL DRIVE ARMS
(Continued)
5-112
1.
Check that shouldered bushing (1) is installed in
each drive collar lug (2).
2.
Remove retaining strap from shouldered bushing
(3). Position upper drive arm (4) between drive
collar lugs (2).
NOTE
The heads of the two attaching bolts
in the upper drive arm shall face the
direction of rotation. A forward head is
shown. Bolt direction is reversed on
the aft head, since rotation is opposite.
Do not lubricate thread of bolt.
CONNECT UPPER DRIVE ARM TO DRIVE COLLAR
WITH 46
3.
Apply a light coat of antiseize compound (E75) to
the bushing and shank of bolt (5). Wear gloves
(E184.1).
4.
Check that bushing (3) is in place. Install bolt
(5), washer (6), and nut (7). Torque the nut to
108 foot-pounds. Continue tightening the nut as
needed to align cotter pin holes in the nut and
bolt. Do not exceed 250 foot-pounds. Install
cotter pin (8).
CONNECT UPPER DRIVE ARM TO DRIVE COLLAR
WITHOUT 46
5.
Apply a light coat of antiseize compound (E75) to
only the shank of bolt (5). Wear gloves (E184.1).
6.
Check that bushing (3) is in place. Install bolt
(5). Check that retaining ring (6) is clear of
shouldered bushing (3) and is free to turn.
7.
Install nut (7). Torque the nut to 500
inch-pounds. Continue tightening the nut as
needed to align cotter pin holes in the nut and
bolt (5). Do not exceed 700 inch-pounds. Install
cotter pin (8).
8.
Apply torque of 165 inch-pounds to the head of
bolt (5). The bolt shall not turn.
5-636
