TM 55-2835-209-23
3-15 INSPECT HOT SECTION COMPONENTS (AVIM) (CONT)
8.
9.
10.
11.
12.
13.
14.
NOTE
Inspect turbine nozzle as fol-
lows.
Visually inspect for axial cracks in
shroud below vane inner diameter
(reference A).
No cracks allowed.
If cracks are suspected, fluorescent
penetrant per MIL-STD-6866.
Visually inspect for cracks in plat-
form outer diameter (reference B).
No cracks allowed.
Inspect leading edge of vanes (ref-
erence D) for erosion.
Damage
shall not exceed 0.125 inch deep.
Repair erosion (Task 3-16).
Inspect trailing edge of vanes (re-
ference E) for erosion or feather-
ing damage.
Damage shall not
exceed 0.130 inch deep.
Repair
erosion or feathering (Task 3-16).
Inspect trailing edge of vanes (re-
ference G) for cracks. Cracks max-
imum of 0.500 inch in length on six
adjacent vanes or ten non-adjacent
vanes are acceptable.
No other
cracks allowed.
Inspect leading edge of vanes (ref-
erence H) for cracks.
No cracks
allowed.
Inspect vanes (reference J) for
axial cracks.
Cracks in more than
11 vanes, cracks less than 0.350
inch from trailing edge of vanes,
cracks that are open so as to dis-
rupt gas stream or axial cracks
connected in any vane so as to
cause material loss are not accept-
able.
Change 1
3-39
