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Page Title: RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES O R LEFT COOLING FAN BLADES ARE TURNED BY HAND AND MORE THAN ONE HALF OF...
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TM
9-2835-255-34
-
CONTINUED
3-2. TROUBLESHOOTING
( 3 ) E S - 4 2 . R U B B I N G OR BINDING IS
k. POWER TURBINE AND REDUCTION
F E L T WHEN TUBEAXIAL FAN BLADES
GEARBOX (RGB) - CONTINUED
O R LEFT COOLING FAN BLADES ARE
TURNED BY HAND AND MORE THAN
O N E HALF OF MAIN OIL PUMP
M A G N E T I C PLUG IS COVERED WITH
METAL CHIPS. - C O N T I N U E D
CONTINUED FROM STEP 1
NO
YES
A.
Clean  RGB  lubrication
B.  Replace  RGB  assembly
C.  Replace  engine  oil  pump
(TM 20-1).
D.  Verify  problem  is
solved.
A. R e m o v e R G B a s s e m b l y
2
B.  Check  rotation  of  RGB
assembly  (1)  by  putting
splined  shaft  (2)  in  RGB
assembly  and  turning  shaft
[2)  clockwise.  Shaft  should
turn  smoothly  and  no  unusual
noises  shduld  be  heard.
I
Does  shaft  turn
smoothly
with
no
unusual noises?
CONTINUED ON NEXT P A G E
Change 5
3-320

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