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Page Title: AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND AND THER...
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TM 9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
a. ACCESSORY GEARBOX (AGB) AND
( 8 ) ES-8.
AGB GEAR TRAIN TURNS
U N E V E N L Y (BINDS) WHEN TURNED BY
HIGH PRESSURE COMPRESSOR -
CONTINUED
HAND, LOW PRESSURE COMPRESSOR
RUBS OR BINDS WHEN TURNED BY
HAND AND THERE ARE METAL CHIPS
I N THE OIL PUMP TO OIL COOLER
FLUID FILTER. - CONTINUED
CONTINUED FROM STEP 1
2
CAUTION
Extreme  care  should  be  taken
when  handling  low  pressure
turbine  rotor  shaft  (1).
Banging,  jarring  or  rough
handling  will  cause  damage  to
No.  5  bearing  carbon  seal.
Lift  end  (2)  of  shaft  (1)
A.
slightly  to  center  shaft
(1).
then  push  shaft  (1)  in
to  establish  clearance
between  power  turbine  disc
(3)  and  nozzle  (4)  and  to
load  No.  5  bearinq  (5).
B.  T u r n  s h a f t  ( 1 ) ,  l i s t e n  a n d
feel  for  rubbing  or  binding.
C.  C h e c k  r o t a t i o n  o f  p o w e r
turbine  in  rear  engine
subassembly  (6)  by  turning
shouldered  shaft  (7)
clockwise.  Shaft  should  turn
smoothly and no unusual
noises  should  be  heard.
Do both shafts turn smoothly with
No unusual noises?
CONTINUED ON NEXT PAGE
Change 5
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