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

(10) ES-10. AGB GEAR TRAIN TURNS

UNEVENLY (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

HAND, RUBBING OR BINDING IS

CONTINUED

FELT WHEN TUBEAXIAL FAN

BLADES OR LEFT COOLING FAN

BLADES ARE TURNED BY HAND AND

THERE ARE METAL CHIPS IN THE

OIL PUMP TO OIL COOLER FLUID

FILTER. - CONTINUED

CONTINUED FROM STEP 4

Check rotation of power turbine

in rear engine subassembly (1)

by turning shouldered 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. Verify problem is solved.

CONTINUED ON NEXT PAGE

3-87

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