TM 55-2840-254-23
4-47 INSPECT FOURTH STAGE POWER TURBINE NOZZLE (AVIM) (Continued)
4-47
i. Inspect plasma sprayed area of cylinder (21)
and third turbine nozzle contact area (22) as
follows.
(1)
There shall be no chips (23) in coating
on forward edge (24) greater than 1/8
inch long axially.
(2)
There shall be no chips in coating on aft
edge (251.
(3)
There shall be no rubs (26) in blade
track area that breaks through coating
to base metal.
FOLLOW-ON MAINTENANCE
None
END OF TASK
4-279