3-15 INSPECT HOT SECTION COMPONENTS (AVIM) (CONT)
Inspect compressor diffuser as
Visually inspect for cracks. No
Inspect vane trailing edges for
dents or nicks.
No nicks or dents
Visually inspect for loose or dam-
No loose or damaged
Inspect labyrinth seal as fol-
Visually inspect labyrinth seal for
cracks (view A).
Axial cracks that have branched
are not allowed.
Six cracks maximum are permit-
ted from the cooling vents to
the outer seal edge.
Cooling vents with cracks which
extend to the outer edge must
be separated by at least one
cooling vent without cracks.
FOLLOW-ON MAINTENANCE: None.