TM 55-2840-254-23
4-52 REPAIR THIRD STAGE POWER TURBINE ROTOR (AVIM)
4-52
INITIAL SETUP
Applicable Configurations:
All
Tools:
Powerplant Mechanic’s Tool Kit,
NSN 5180-00-323-4944
Technical Inspection Tool Kit,
NSN 5180-00-323-5114
Materials:
Carborundum Stone (E10)
Crocus Cloth (E15)
Personnel Required:
68B10 Aircraft Powerplant Repairer
68B30 Aircraft Powerplant Inspector
Equipment Condition:
Off Engine Task
1. Repair third stage power turbine rotor (1) as
follows:
a. Repair disc (2).
(1)
Blend repair pits, nicks and rubs up to
0.010 inch deep except in area (3) where
material has been removed for balancing.
Use Carborundum stone (E10). Polish to
smooth finish. Use crocus cloth (E15).
(2)
Polish indents in pin head area (4) up to
0.005 inch deep. Use crocus cloth (E15)
to polish to smooth contour.
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