TM 1-2840-252-23-2
4-53
REPAIR THIRD STAGE POWER TURBINE ROTOR (AVIM) (Continued)
4-53
NOTE
Repair is allowed to any depth provided no
cracks are visible.
c. Repair labyrinth seals (20). Repair cracks (19) in
labyrinth seals (20) as follows.
(1) Blend all sharp edges (21) Use carborundum
stone (E11).
(2) Polish to smooth finish Use crocus cloth (E16).
(3) All seals can be blend repaired One seal (20)
must have at least 0.010 inch material
remaining after repair.
INSPECT
FOLLOW-ON MAINTENANCE
None
END OF TASK
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