TM 1-1520-238-23
5-252
Change 3
5.56.
TAIL ROTOR BLADE DENT AND DEPRESSION REPAIR – continued
g Finish sanding dried compound on blade (1)
in a spanwise direction. Use paper (item 135,
App F).
h. Wipe blade (1) clean. Use methyl ethyl ketone
(item 124, App F), naphtha (item 127, App F), or
thinner (item 211, App F), and cloth (item 52,
App F).
CAUTION
Rotor blades are not to be repainted over
the entire surface of blade. Only light tou-
chup of the eroded or repaired area is
allowed. Severe chordwise imbalance
problems may result from repainting
blade.
i. Refinish reworked area.
(1) Spray a full, even coat of primer on reworked
area (TM 55-1500-345-23). Use epoxy
primer coating kit (item 78, App F), spray
gun, and paint cup.
(2) Feather primer into existing painted surfaces.
(3) Allow primer to air dry for at least 1 HOUR.
(4) Spray a full, even coat of polyurethane coat-
ing on reworked area (TM 55-1500-345-23).
Use polyurethane coating (item 140, App F),
spray gun, and paint cup.
(5) Feather edges into the existing surfaces.
(6) Allow polyurethane coating to air dry at least
3 HOURS.
j. Inspect (QA).
k. Perform tail rotor balance maintenance opera-
tional check (TM 1-1520-238-T).
END OF TASK
M04-2336-3
1
SANDED AREA
