TM 55-1520-240-23-4
5-6
INSPECT ROTARY-WING HEADS
(Continued)
5-6
m.
Damage to lugs (23) and outboard housing
areas (24) shall not exceed 0.030 inch in
depth. There is no restriction on damage
area. Rework within this depth does not
require shotpeening.
n.
Damage to housing areas (25 and 26) shall
not exceed 0.005 inch in depth by 2.5 inches
in length.
3.
Check outboard hub areas (27) for scores.
Scores shall not be greater than 0.005 inch by
2.5 inches or 0.010 inch by 1.0 inch. Scores
in outboard hub areas shall run parallel to caps
(13) within 10º.
4.
Check outboard side of lugs (23) for scores.
Scores shall not exceed 0.005 inch in depth by
1.0 inch in length. Scores in outboard side of
lugs shall run parallel to tanks (22) within 10º.
FOLLOW-ON MAINTENANCE:
Close work platform (Task 2-2).
END OF TASK
5-35