LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND, RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLING FAN BLADES ARE TURNED BY HAND-continued

TM 9-2835-255-34

3-3. TROUBLESHOOTING - CONTINUED

h. LOW PRESSURE COMPRESSOR -

( 6 ) E S - 3 3 . LOW PRESSURE COMPRESSOR

CONTINUED

RUBS OR BINDS WHEN TURNED BY

HAND, RUBBING OR BINDING IS FELT

WHEN TUBEAXIAL FAN BLADES OR

LEFT COOLING FAN BLADES ARE

TURNED BY HAND AND MORE THAN ONE

HALF OF ACCESSORY GEARBOX (AGB)

MAGNETIC PLUG IS COVERED WITH

METAL CHIPS. - CONTINUED

FROM STEP 2

WARNING

Compressor blades are sharp and

can cut you. B e c a r e f u l n o t t o

pinch fingers between blades

and vanes when turning

compressor.

Turn low pressure compressor

blades (1) by hand and high

pressure compressor blades by

turning spline coupling (2).

Listen and feel for rubbing or

binding.

Do compressors turn

smoothly

with

no unusual noises?

Check rotation of RGB assembly

(3) by putting splined shaft

(4) in RGB assembly and turning

shaft (4) clockwise. Shaft

should turn smoothly and no

unusual noises should be heard.

Does shaft turn smoothly with no

unusual noises?

CONTINUED ON NEXT PAGE

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