TM 55-1520-240-23-4
5-9
INSTALL ROTARY-WING HEAD
(Continued)
5-9
Move head slowly when positioning
head on shaft. Misalignment can
damage head or shaft. Use care to
avoid pitch links.
9.
Have helper position head (16) over drive shaft
(1). Align master spline (19) of head with master
spline (20) of shaft.
10.
Lower head (16) onto shaft (1) until hub (10) is
seated. Remove excess grease from top and
bottom of hub. Use cloths (E120).
11.
Remove lifting device (T30) (9) as follows:
a.
Loosen three nuts (13) and remove three
pins (12).
b.
Turn three arms (11) outward.
c.
Remove lifting device (T30) (9).
11.1.
Remove ropes (15).
5-60
