TM 55-1520-240-23-4
5-112
INSTALL DRIVE ARMS
(Continued)
5-112
CONNECT LOWER DRIVE ARM TO SWASHPLATE
If bushing (9) is not installed in
swashplate lug (10), personal injury or
loss of life could occur.
NOTE
At the forward swashplate, make sure
lower drive arm is installed in lug
marked FWD. At the aft swashplate,
make sure lower drive arm is installed
in lug marked AFT. Installation at a
forward swashplate is shown here.
9.
Remove the retaining strap from bushing (9) in
swashplate lug (10). If a new swashplate has
been installed, check that a bushing (9) is in
lug (10). Check for the presence of shouldered
bushing (11). Position lower drive arm (12), with
mechanical stop (13) outboard, in the swashplate
lug. Align bearing (14) with bushings (9 and 11).
10.
Install bolt (15), with thin, smaller-inside diameter
washer (16) under the head, and larger-inside
diameter washer (17) over retaining ring (18).
With the bolt fully inserted, check that the
retaining ring protrudes past washer (17) and
is free to turn.
11.
Install nut (19). While holding the nut, torque bolt
(15) to 190 inch-pounds. Continue tightening
the bolt as needed to align cotter pin holes in the
nut and bolt. Do not exceed 270 inch-pounds.
12.
Check for clearance between the threaded end
of bolt (15) and the inside face of the swashplate,
as shown. Clearance shall be at least 0.005
inch. Add a thin or thick washer under the bolt
head if needed. Install cotter pin (20).
13.
Check that there is a gap between washer (16)
and lug (10) as shown.
14.
Apply a torque of 65 inch-pounds to the head of
bolt (15). The bolt shall not turn.
15.
Lockwire bolt (15) to hole (21) in lug (10). Use
lockwire (E231).
INSPECT
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