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Page Title:
LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND AND RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT CO... |
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 TM
9-2835-255-34
3 - 2 . TROUBLESHOOTING - CONTINUED
( 2 ) E S - 2 9 . LOW PRESSURE COMPRESSOR
h. LOW PRESSURE COMPRESSOR -
RUBS OR BINDS WHEN TURNED BY
CONTINUED
H A N D AND RUBBING OR BINDING IS
F E L T WHEN TUBEAXIAL FAN BLADES
O R LEFT COOLING FAN BLADES ARE
T U R N E D BY HAND. - CONTINUED
CAUTION
2
Extreme care should be taken
when handling low pressure
turbine rotor shaft (1).
Banging, jarring or rough
handling will cause damage to
No. 5 b e a r i n g c a r b o n s e a l .
A.
Lift end (2) of shaft (1)
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 bearing (5).
B. Turn shaft (1), llsten and
feel for rubbing or binding.
C. Check rotation of power
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?
Go
step
5
to
CONTINUED ON NEXT PAGE
Change 5
3-230
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