TM 1-1520-238-23
6-427
6.97.
MAIN ROTOR SUPPORT MAST REMOVAL/INSTALLATION – continued
6.97.3. Removal
a. Install lifting eye (1) on mast (2). Use sling set
kit.
b. Attach hook (3) of crane to lifting eye (1).
CAUTION
Place mast on wood pallet or similar plat-
form to prevent damage to mast.
c. Remove mast (2) from support (4).
(1) Remove sealant from threads of 18 support
bolts (5) (para 1.47).
(2) Remove and discard 18 nuts (6) and preload
indicating (PLI) washers (7) from support
bolts (5).
(3) Lift mast (2) from support (4), then lower,
while guiding to platform.
d. Cover support (4). Use cushioning material
(item 68, App F).
e. Remove hook (3) of crane from lifting eye (1)
and remove lifting eye (1) from mast (2), if
mast (2) is being replaced.
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