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Page Title:
LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND |
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 TM
9-2835-255-34
3-2. TROUBLESHOOTING - CONTINUED
( 1 ) E S - 2 8 . LOW PRESSURE COMPRESSOR
h. LOW PRESSURE COMPRESSOR -
RUBS OR BINDS WHEN TURNED BY
CONTINUED
HAND. NO OTHER ROTATION OR METAL
C H I P S NOTED. - CONTINUED
Supplies:
Tools:
Wiping rag
(Item
14,
Appendix
B)
General mechanic's tool kit:
automotive (SC 5180-90-N26)
1
Check inlet guide vanes (IGVs)
(1) and first stage low
pressure compressor blades (2)
for foreign object damage
(FOD), bends or damage that
might cause rubbing or binding.
Are IGVs and first stage blades
damaged enough to cause rubbing
or
binding?
I Go to step 4.
I
I
2 . A. Remove forward engine
module (page 5-13).
WARNING
Compressor blades are sharp and
can cut you. Be careful not to
pinch fingers between blades
and vanes when turning
compressor.
B.
Turn low pressure compressor
blades (2) by hand and high
pressure compressor blades
by turning spline coupling
(3). Listen and feel for
rubbing or binding.
Do compressors turn
smoothly
with
no unusual noises?
CONTINUED ON NEXT PAGE
Change 5
3-224
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