TM 1-1520-238-23
1-274
Change 4
1.85.
HOISTING – MAIN ROTOR HEAD REMOVAL
1.85.1. Removal
WARNING
Hoisted components can cause in-
jury or death if they fall. Keep away
from hoisted components and
loaded crane. If injury occurs, seek
medical aid.
Failure to install bearing retainer
prior to hoisting operation may re-
sult in main rotor component dam-
age or personnel injury. If injury
occurs, seek medical aid.
a. Install rotor head puller/sling (1) on rotor head
(2).
(1) Position puller/sling (1) on top of head (2).
(2) Aline nutplates (3) with bolt holes in head (2).
(3) Install two captive bolts (4) through head (2)
into nutplates (3).
(4) Tighten two captive bolts (4).
b. Position crane hook (5) over installed puller/
sling (1).
(1) Rotate crane handle (6) to up position to al-
low lateral movement of crane boom arm (7).
(2) Use two tag lines (8) to move boom arm (7).
(3) Turn boom arm (7) to aline hook (5) over
puller/sling (1) lifting eye (9).
(4) Rotate handle (6) to down position to allow
prevent movement of boom arm (7).
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