TM 1-2840-252-23-2
4-36 INSPECT FOURTH STAGE POWER TURBINE ROTOR (AVIM) (Continued)
4-36
e. Add Dimension C to Dimension B.Record
answer as Dimension D
Subtract Dimension D from Dimension A. he
f.
T
answer is how much of shaft should protrude from
fourth stage power turbine rotor. Record answer
for later use
2. Determine axial clearance between fourth stage
power turbine rotor blade rivet heads and heat shield
outer circle screw heads.
a. Place locating bar (T33) (5) on forward face of hub
of fourth stage power turbine rotor (4) Measure
from highest rivet head (8) to top of locating bar
dimension A
NOTE
In following step, dimension B is the thickness of
locating bar (T33) (5)
b. Measure from top of locating bar (T33) (5) to
Record as dimension B
c. Subtract dimension B from dimension A Record as
dimension C
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