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Page Title: AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLI...
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TM
9-2835-255-34
3 - 2 . TROUBLESHOOTING - CONTINUED
I
I
a . ACCESSORY GEARBOX (AGB) AND
( 1 0 ) ES-10. AGB GEAR TRAIN TURNS
HIGH PRESSURE COMPRESSOR -
U N E V E N L Y (BINDS) WHEN TURNED BY
CONTINUED
H A N D , RUBBING OR BINDING IS
F E L T WHEN TUBEAXIAL FAN
B L A D E S OR LEFT COOLING FAN
BLADES ARE TURNED BY HAND AND
T H E R E ARE METAL CHIPS IN THE
O I L PUMP TO OIL COOLER FLUID
F I L T E R .  - CONTINUED
CONTINUED FROM STEP 6
YES
NO
Go to step 11.
7
Check  high  pressure  compressor
system  rotation  by  turning
spline  coupling  (1)  clockwise.
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?
NO
YES
A.
Replace  spur  gearshaft
(2).
B.
Clean  AGB  (page  7-46).
C.
Replace  engine  oil  pump
(TM 20-1) .
D.
Replace  engine  oil
cooler (TM 20-1) .
E.
Replace  engine  AC
generator  (TM  20-1).
F.
Clean  cooler  and  gener-
ator  lines  (TM  20-1).
G.
Go to step 8.
CONTINUED ON NEXT PAGE
Change 5
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