TM 1-1520-238-23
5-192
Change 3
5.43.
MAIN ROTOR HEAD ASSEMBLY (AVIM) – continued
NOTE
Hub, hub load plate, hub plate, and lower
shoe each have a small index bump on
outer edge contour. Ensure bumps are
alined for proper installation of these
parts.
e. Install hub load plate (1) on main rotor hub (2).
f. Lubricate threads of four feathering bearing
studs (3) and nuts (4). Use lubricant (item 114,
App F).
(1) Allow lubricated studs (3) to dry for 6 HOURS
at room temperature, or air dry for 30 MIN-
UTES and then cure for 30 MINUTES at 150
F (66 C).
g. Coat four studs (3) with corrosion preventive
compound. Use corrosion preventive compound
(item 62, App F).
h. Install four studs (3) on hub (2).
(1) Install keyed end of four studs (3) in hub (2).
(2) Hold four studs (3). Install four washers (4)
and nuts (5). Use strap wrench.
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