TM 1-2840-252-23-2
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INSTALL SECOND TURBINE DISC ASSEMBLY (AVIM) (Continued)
4-57
NOTE
When checking runout, apply forward pressure to
compensate for bearing internal clearance
NOTE
While rotating second turbine disc assembly, a
slight rubbing sound may be heard. This is normal
due to wearing in of second turbine nozzle labryinth
seal
e. Zero indicator (25) and rotate second turbine disc
assembly
counterclockwise
while
recording
dimension.
f.
Maximum allowable runout shall be 0.004 inch.
Record runout.
INSPECT
g. Adjust arm (20) at base (21) and indicator clamp
(22) to position pointer (23) on hub (26).
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