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TM 10-3930-643-34
GENERAL SUPPORT ENGINE, FUEL, EXHAUST AND COOLING MAINTENANCE. (cont)
13-14.
Turbocharger.
(Sheet 7 of 10)
CLEANING/INSPECTION (cont)
28.
29.
30.
31.
32.
33.
34.
Inspect wheel assembly (10) and
impeller (11) for damaged or
distorted vanes for contact with
housings.
Spacing between vanes and
contour must be
uniform.
Check
cracked or bent blades.
If any of
above
conditions
are
evident,
replace.
Do not attempt to
straighten blades.
Inspect turbine housing
(8) for
cracks or excessive scoring in outlet
contour.
Inspect compressor housing (4) for
damage.
Inspect bearing surfaces in wheel
assembly (10) for excessive scratches
and wear.
If shaft is only slightly
scratched, it may be reused.
Do not
grind or polish shaft as balance will
be affected.
Inspect bearings (23 and 26) for
scratches or worn surfaces. Replace
if tin plate is worn off.
Inspect
bearing bores in center housing (28)
for worn or scored surfaces. Replace
if bores show signs of excessive
scoring or wear.
Inspect flange halves which mate to
compressor housing (4) and turbine
housing (8).
Replace if flange
halves are damaged.
Inspect all parts. Refer to para-
graph 2-9.
Go to sheet 8
13-92
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