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Page Title:
AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND AND MORE THAN ONE HALF OF AGB MAGNETIC PLUG IS COVERED WITH METAL C... |
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 TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
(4)
ES-4. AGB GEAR TRAIN TURNS
a. ACCESSORY GEARBOX (AGB) AND
UNEVENLY (BINDS) WHEN TURNED BY
HIGH PRESSURE COMPRESSOR -
HAND AND MORE THAN ONE HALF OF
CONTINUED
AGB MAGNETIC PLUG IS COVERED
WITH METAL CHIPS. - CONTINUED
FROM STEP 1
3
Check splined coupling (1) for
damage to splines.
is splined coupling damaged?
YES
NO
A. Replace number 12 bearing
and splined coupling
B. Replace spur gearshaft (2).
C. Clean AGB (page 7-46).
D. Replace engine oil pump
(TM 20-1).
E. Replace engine oil cooler
(TM 20-1).
F. Replace engine AC
generator (TM 20-1).
G. Clean cooler and generator
lines (TM 20-1).
H. Verify problem is solved.
4
Check high pressure compressor
system rotation by turning splined
coupling (1) in both directions.
High pressure compressor system
should turn smoothly. No rubs
or binds should be felt and no
unusual noises should be heard.
Does high pressure compressor turn
smoothly with no unusual noises?
CONTINUED ON NEXT PAGE
Change 6
3-36
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