TM 55-1520-240-23-4
5-7
REPAIR ROTARY-WING HEADS
(Continued)
5-7
b.
Damage to six lugs (4), webs (5), and side
surfaces (6) shall not exceed 0.005 inch in
depth by 0.625 inch in length. Refinish (Task
2-348).
c.
Damage to locking beam (7) is not limited,
but must be refinished (Task 2-346).
d.
Damage to hub oil tank (8) and three pitch
housing oil tanks (9) shall not exceed 0.020
inch in depth by 2.5 inches in length.
Refinish (Task 2-347).
e.
Damage around aft droop stop lugs (11)
within 1 inch of lugs shall not exceed 0.005
inch in depth by 1.0 inch in length. Refinish
(Task 2-347).
5-41
