AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND AND THERE ARE METAL CHIPS IN THE OIL PUMP-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

(8)

ES-8. AGB GEAR TRAIN TURNS

a. ACCESSORY GEARBOX (AGB) AND

UNEVENLY (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

HAND, LOW PRESSURE COMPRESSOR

CONTINUED

RUBS OR BINDS WHEN TURNED BY

HAND AND THERE ARE METAL CHIPS

IN THE OIL PUMP TO OIL COOLER

FLUID FILTER. - CONTINUED

CONTINUED FROM STEP 6

A. Replace number 10 bearing

B. Replace forward engine

C. Clean AGB (page 7-46).

D. Replace engine oil pump

(TM 20-1).

E. Replace engine oil cooler

(TM 20-1).

F. Replace engine AC

generator (TM 20-1).

G. Clean cooler and generator

lines (TM 20-1).

H. Verify problem is solved.

FROM STEP 3

WARNING

Compressor blades are sharp and

can cut you. Be careful not to

pinch fingers between blades

and vanes when turning

compressor.

Turn low pressure compressor

blades (1) by hand and high

pressure compressor blades by

turning splined coupling (2) in

both directions. Listen and feel

for rubbing or binding.

Do compressors turn smoothly with

no unusual noises?

CONTINUED ON NEXT PAGE

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