TM 1-1520-238-23
2-370.2
Change 8
2.102.
EMPENNAGE INSPECTION – continued
2.102.5. Horizontal Stabilator
a. Check skin panels, access covers, doors, and fairings for corrosion, cracks, tears, punctures, and
loose or missing fasteners.
b. Check fittings, castings, and forgings for corrosion and cracks.
c. Check stabilator pivot bolts.
(1) Remove access doors LS1 and RS1; and fairings L545 and R545 (para 2.2).
(2) Remove stabilator pivot bolts one at a time (para 2.113).
(3) Check pivots bolts and self-aligning bearing for evidence of surface discoloration and roughness.
(a) If surface discoloration or roughness is visible, or if bolt removal was difficult, polish bolt with cloth
(item 50, App F).
(b) After polishing, if surface pits and scratches exceed limits (para 2.113), replace bolt.
(c) If scratches are less than limits (para 2.113) deep, ensure sharp edges are removed with minimal
material and surface coating loss.
NOTE
To check surface discoloration and roughness on self-aligning bearings it may be necessary to remove
stabilator assembly (para 2.113).
(4) Check inner race of self-aligning bearing.
NOTE
Discoloration may be deeper than surface level. Polishing should remove roughness. Avoid removal of
surface coating and material.
(a) If surface discoloration or roughness exists, polish race with cloth (item 50, App F).
(b) After polishing, if surface pits and scratches remain, do not attempt blending. If scratches and pits
prevent easy installation of pivot bolt, replace stabilator (para 2.113).
(5) Check that spacer slides freely and smoothly over surface of bolt.
(6) Coat pivot bolts with grease (item 87, App F) and install (para 2.113).
(7) Close access doors LS1 and RS1; and secure fairings L545 and R545 (para 2.2).
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