TM 55-2840-231-23
2-16. Diffuser Scroll - Inspection - Continued
ENGINE/-Continued
d. Inspect the diffuser
scroll discharge air tube
inserts for wear and
looseness. If wear in the
ID of the insert exceeds
0.010 in. (0.025 cm) depth
or there is evidence that
the insert has been pulled
out of the scroll, replace
the compressor assembly.
If insert wear does not
exceed 0.010 in. (0.025
cm) depth, blend and
polish per paragraph
2-17.
2. Diffuser Vent Tube
If a 3/8 in. diameter rod can be inserted into
Inspect diffuser vent tube
tube, it is acceptable, A gap not exceeding
for distortion, 0.010 in.
0.010 in. (0.025 cm) is acceptable. No cracks
(0.025 cm) gap where
are permitted. Remove the tube if
tube enters passage, and
replacement is required and replace per
cracks.
paragraph 2-17.
2-66
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