AGB GEAR TRAIN TURNS UNEVENLY (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

3-2. TROUBLESHOOTING - CONTINUED

ACCESSORY GEARBOX (AGB) AND

(9) ES-9. AGB GEAR TRAIN TURNS

UNEVENLY (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

CONTINUED

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 AGB MAGNETIC PLUG IS

COVERED WITH METAL CHIPS. - CONTINUED

FROM STEP 5

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?

YES

A. Replace number 10 bearing

B. Clean AGB (page 7-46).

C. Replace engine oil pump

(TM 20-1).

D. Replace engine oil cooler

(TM 20-1).

E. Replace engine AC

generator (TM 20-1).

F. Clean cooler and generator

lines (TM 20-1).

G. Verity problem is solved.

CONTINUED ON NEXT PAGE

3-78

Change 6