TM55-2840-251-23
3-2 INNER (SMALL) EXIT DUCT, SHROUD AND VANE ASSEMBLY (AVIM)
(Continued)
3-2-5 ASSEMBLE (Cont)
4. On engines with 14 shroud
segments installed, proceed as
follows:
a. Select appropriate class
of shroud to match diameter of
compressor turbine (Task 2-3-1).
b. Install 14 segments (one
long, 13 short) on vane outer
platform, locating segment lugs
between vane lugs. Insure that
one end of long segment aligns
with grooved lug on outer support
flange and that other end runs
counterclockwise when looking at
trailing edges of vanes.
c. Install heat shield (7)
on lip of segments, straightening
segments to conform with heat
shield.
d. Using clean engine
Lubricating Oil (E.2), lightly
lubricate groove in inner
diameter of shroud housing (6).
e. Install shroud housing
(6) over segments, lightly
tapping into position with a
soft-faced hammer.
f. Invert assembly and
check that heat shield is posi-
tioned correctly on housing lip.
g. Using a small pick or
screwdriver, adjust segments un-
til shroud lips drop into posi-
tion behind heat shield (7).
h. Strike inner (small)
exit duct (15) sharply by hand
to seat flange fully on shroud
housing (6).
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