TM 1-1520-238-23
Change 7
5-229
5.51.
TAIL ROTOR ASSEMBLY INSPECTION continued
f. Check resilient mounts (7) for deterioration and cracking.
(1) Elastomeric compound surface cracks are allowed over entire area.
(2) Debonding along a circular shim is allowable to a maximum arc of 180 DEGREES, ONE PLACE ONLY.
(3) Radial cracking through shim not allowed.
(4) Check resilient mount (7) outer race for damage. Curled edge or bulge surface not allowed.
g. Check brackets (8) on tail rotor blade root fitting (9) for security of attachment.
h. Check tail rotor blade (2) for serviceability.
CAUTION
If a preload indicating washer is loose, the washer must be removed and replaced with a new preload
indicating washer.
(1) Check tail rotor blade (2) attaching bolt (3) for loose preload indicating (PLI) washer (4).
(2) Check tail rotor blade (2) for scratches, nicks, gouges, and corrosion (para 5.52).
(3) Check tail rotor blade (2) for dents and depressions (para 5.52).
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