TM55-2840-251-23
4-6 POWER TURBINE SHROUD (AVIM) (Continued)
4-6-1 INSPECTION (Cont)
8. Subtract rotor dimension
(Task 4-4-1) from shroud
dimension to determine
clearance. Rotor to shroud
clearance shall be 0.016 to 0.028
inch.
9. Repeat steps 5 thru 8 for
downstream lands. Rotor to
shroud clearance shall be 0.016
to 0.028 inch.
10. If the clearance at either
the upstream or downstream lands
exceeds 0.028 inch, replace
shroud (Tasks 4-6-2 and 4-6-3)
and recheck clearance.
4-6-2 REMOVAL
1. Index mark shroud, using
Colorbrite Pencil (E.31), in
relation to exhaust duct to
insure installation in original
position.
2. Install Puller (T.28)(3) and
remove shroud (4).
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