TM 1-1520-238-23
6-416
Change 1
6.95.
MAIN ROTOR GEARSHAFT REMOVAL/INSTALLATION – continued
6.95.3. Removal
a. Install sling (1) on main rotor gearshaft (2).
Use sling set kit.
(1) Remove quick release pin (3) from upper
supports (4) and (5).
(2) Position supports (4) and (5) around gear-
shaft (2) and under gear head (6).
(3) Install pin (3) in supports (4) and (5).
CAUTION
Check for binding when lifting gearshaft.
Stop lifting and free gearshaft if tension
increases on cable.
a.1. Hoist main rotor gearshaft (para 1.87).
b. Remove gearshaft (2) from rotor mast (7) .
(1) Connect crane (8) to sling (1).
(2) Operate crane (8) slowly to lift gearshaft (2)
out of mast (7).
c. Install gearshaft (2) on adapter kit.
(1) Operate crane (8) to lower gearshaft (2) on
adapter kit.
(2) Guide gearshaft (2) on adapter kit.
(3) Remove sling set kit (1) from gearshaft (2).
d. Remove spring (9) from mast (7).
(1) Bend end of lockwire to form hook. Use wire
(item 229, App F).
(2) Insert lockwire in mast and hook spring (9).
(3) Pull lockwire with spring (9) out of mast (7).
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