AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

ACCESSORY GEARBOX (AGB) AND

(7)

ES-7. AGB GEAR TRAIN TURNS

HIGH PRESSURE COMPRESSOR -

UNEVENLY (BINDS) WHEN TURNED BY

CONTINUED

HAND, LOW PRESSURE COMPRESSOR

RUBS OR BINDS WHEN TURNED BY

HAND AND MORE THAN ONE HALF OF

AGB MAGNETIC PLUG IS COVERED

WITH METAL CHIPS. - CONTINUED

CONTINUED FROM STEP 1

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?

YES

A . Salvage Gas Turbine Power

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

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