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Page Title:
RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLING FAN BLADES ARE TURNED BY HAND AND MORE THAN ONE HALF OF ... |
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 TM
9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
( 5 ) E S - 4 4 . R U B B I N G OR BINDING IS
k. POWER TURBINE AND REDUCTION
F E L T WHEN TUBEAXIAL FAN BLADES
O R LEFT COOLING FAN BLADES ARE
TURNED BY HAND AND MORE THAN
ONE HALF OF ACCESSORY GEARBOX
( A G B ) AND MAIN OIL PUMP MAGNET
PLUGS ARE COVERED WITH METAL
C H I P S . - CONTINUED
CONTINUED FROM STEP 3
YES
NO
Clean RGB lubrication
A.
system (page 8-1).
B.
Replace RGB assembly
Clean AGB (page 7-46).
C.
D.
Replace engine oil pump
(TM 20-1).
Replace engine oil
E.
cooler (TM 20-1).
F.
Replace engine AC
generator (TM 20-1).
Verify problem is
G.
solved.
4
A. Remove RGB assembly
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 should be heard.
Does shaft turn smoothly with no
unusual noises?
CONTINUED ON NEXT PAGE
Change 5
3-336
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