TM55-2840-251-23
4-4 POWER TURBINE ROTOR ASSEMBLY (AVIM) (Continued)
4-4-1 REMOVAL (Cont)
CAUTION
To avoid damage, do not
continue to operate bolt
of Puller (T.31) after
rotor is released (indica-
ted by sudden decrease in
torque).
CAUTION
Be careful of tips.
6. Install and operate Puller
(T.31) (6) with four movements as
shown and release rotor (7).
7. Remove puller (6) and rotor
(7).
8. Using outside micrometer,
measure replacement rotor
diameter at four locations 90
degrees apart. Record average
measurement.
9. Measure shroud radius (Task
4-6-1).
10. Determine rotor/shroud
clearance by deducting turbine
rotor diameter from shroud
diameter.
11. Grind to obtain required
0.016 to 0.018 inch clearance
(Task 4-6-3).
12. Remove power turbine rotor
air seal (9).
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