TM 1-1520-238-23
5-189
5.42.
MAIN ROTOR HEAD DISASSEMBLY (AVIM) – continued
h. Remove four feathering bearing studs (11)
from hub (2).
(1) Hold eight screws (12).
(2) Remove eight nuts (13) and washers (14).
(3) Remove eight screws (12) and four brackets
(15).
(4) Hold four studs (11). Use strap wrench.
(5) Remove four nuts (16) and washers (17).
(6) Remove studs (11) from hub (2).
i. Remove hub load plate (18) from hub (2).
5.42.4. Cleaning
a. Wipe hub load plate, hub, strap packs, hub
plate, brackets, studs, and related hardware.
Use cloth (item 52, App F).
5.42.5. Inspection
a. Check hub load plate, hub, shoe, four brack-
ets, four studs, and related hardware for
cracks, wear, thread damage, scoring, hole
elongation, and missing identification plate.
None allowed.
b. Check hub load plate, hub, strap packs, hub
plate, and shoe for corrosion (para 1.49).
c. Check stud shank for corrosion (para 1.49).
(1) Maximum allowed is 0.005 INCH.
d. Check eight holes of hub, shoe, hub load
plate, and hub plate for elongation or surface
damage. None allowed.
e. Check strap packs for damage and repair
(para 5.36).
f. Inspect (QA).
END OF TASK
M04-246-5
2
11
16
17
18
13
14
15
12
