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Page Title:
AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND AND THERE ARE METAL CHIPS IN THE OIL PUMP TO OIL COOLER FLUID FILTE... |
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 TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
a.
ACCESSORY GEARBOX (AGB) AND
(6)
ES-6. AGB GEAR TRAIN TURNS
HIGH PRESSURE COMPRESSOR -
UNEVENLY (BINDS) WHEN TURNED BY
CONTINUED
HAND AND THERE ARE METAL CHIPS
IN THE OIL PUMP TO OIL COOLER
FLUID FILTER. - CONTINUED
FROM STEP 1
3
Check splined coupling (1) for
damage to splines.
Is splined coupling damaged?
NO
YES
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
3-48
Change 6
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