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Page Title:
AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND-continued |
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 TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
a. ACCESSORY GEARBOX (AGB) AND
(1)
ES-1. AGB GEAR TRAIN TURNS
HIGH PRESSURE COMPRESSOR -
UNEVENLY (BINDS) WHEN TURNED BY
CONTINUED
HAND. AGB INSTALLED ON ENGINE.
NO OTHER ROTATION OR METAL CHIPS
NOTED. - CONTINUED
CONTINUED FROM STEP 2
YES
NO
A. Put new spur gearshaft (1)
in AGB (2).
B. Inspect splined coupling (3)
for evidence of damage. If
damaged, replace number
12 bearing and splined
coupling (page 5-124).
C. Verify problem is solved.
Rotate gearshaft and check
for binding. If binding is
evident, replace forward
engine module (page 5-13).
A. Clean AGB (page 7-46).
B. Verify problem is solved.
FROM STEP 1
3
Check high pressure compressor
system rotation by turning splined
coupling (3) 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 hi h pressure compressor turn
smooth y with no unusual noises?
I
CONTINUED ON NEXT PAGE
3-18
Change 6
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