TM 1-1520-238-23
Change 5
6-465
6.109.
TRANSMISSION INSTALLATION – INSTALL TRANSMISSION – continued
WARNING
The surface of the transmission cover
and the mast base with geared curvic
coupling are precise surfaces. Normal
handling of aluminum parts do not ap-
ply. Do not abrade surfaces of the
curvic teeth over any extensive area.
Small material movements can cause
the curvic surfaces to fail to mesh. If
curvic shows impact damage as
would be caused by tool impact or
rough handling, remove any displaced
metal to the surface. If surface is cor-
roded, send parts to depot mainte-
nance. Both transmission cover and
mast base must be entirely free of de-
bris and burrs. If foreign matter is on
these surfaces at assembly, teeth will
fail to properly mesh. Inspect both
curvic surfaces for burrs, displaced
metal, and debris before assembly.
b. Position transmission (3) under upper mast
base (5).
(1) Slide transmission (3) inboard on platform
(6).
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M04-2969-2
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