TM 1-2840-252-23-2
4-57
INSTALL SECOND TURBINE DISC ASSEMBLY (AVIM) (Continued)
4-57
NOTE
If either runout measured in steps f. and i is not
within acceptable limits, do all steps. If both
runouts measured in steps f and are within
acceptable limits, omit steps j thru m
j.
Loosen arm (20) at base (21) and move arm (20)
away from second turbine disc assembly (2).
k. Loosen and retorque (high side of runout first)
six bolts (11) to155 inch-pounds
.
I.
Repeat steps d through i.
NOTE
The first turbine disc assembly, turbine spacer,
second turbine disc assembly, seal, three locking
plates and six bolts are supplied as a balanced
matched set. If the second turbine disc assembly is
replaced, all other parts in the balanced, matched
set shall be replaced Use field replacement first
and second turbine disc assembly, part number 2-
121-480-19
m. If runouts still are not met, replace second
n. Remove dial indicator (19), three slave bolts (17),
and support (16) from air diffuser (18).
o. Rotate engine to vertical position.
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