TM 55-2840-251-23
Section VI SPECIAL INSPECTIONS (Continued)
1-33 HOT SECTION INSPECTION
(AVIM) (Cont)
5.
Remove compressor turbine disk assembly (Task 2-
3-1).
6.
Inspect gas generator case for cracks, bulges or
overheating. No repairs are permitted; any damage,
return engine to Depot.
7.
Inspect gas generator diffuser area blind rivets. The
following conditions are acceptable without repair:
a. Four adjacent rivets or rivet heads are missing.
b. Six rivets or rivet heads are missing from the total
of 14.
c. A total of eight loose rivets is permissible,
provided no rivets are missing.
d. A total of six missing and two loose rivets,
maximum.
NOTE
A maximum gap of 0. 005 inch is
acceptable between rivet head and
sheet surface, as shown, provided that
at least 40 percent of rivet head
circumference is in contact with sheet
surface.
e. Loose or missing rivets beyond limits given in
steps a. thru d. are not permitted and engine must be
returned to Depot.
8.
Inspect combustion chamber liner for damage (Task
3-1-2).
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