TM 55-1520-240-23-4
5-9
INSTALL ROTARY-WING HEAD
(Continued)
5-9
12.
Deleted.
13.
Deleted.
INSTALL RETAINING NUT
14.
Install washer (22) on shaft (1).
15.
Check thread of hub nut (23) for damaged thread.
16.
Apply thinnest possible coat of grease (E190)
evenly to thread of nut (23) and exposed
thread of shaft (1). Use a 1 inch brush. Wipe
excess grease from thread. Use cloth and hand
pressure.
Use of tools to seat nut may cross
threads.
17.
Install nut (23) on shaft (1). Use hand pressure
only.
5-61