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

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

(3) ES-3. AGB GEAR TRAIN TURNS

a. ACCESSORY GEARBOX (AGB) AND

UNEVENLY (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

HAND AND LOW PRESSURE COMPRESSOR

CONTINUED

RUBS OR BINDS WHEN TURNED BY

HAND. NO OTHER ROTATION OR METAL

CHIPS NOTED. - CONTINUED

Supplies:

Tools:

Wiping rag (Item 14, Appendix B)

General mechanic's tool kit:

automotive (SC 5180-90-N26)

References:

AGB gear train handle (Item 42,

TM 34-1

A. Remove AGB module

B. Remove forward engine module

CAUTION

Extreme care should be taken

when handling low pressure

turbine rotor shaft (1).

Banging, jarring or rough

handling will cause damage to

No. 5 b e a r i n g c a r b o n s e a l .

C. Lift end (2) of shaft (1)

slightly to center shaft

(1), then push shaft (1) in

to establish clearance

(3) and nozzle (4) and to

load No. 5 b e a r i n g ( 5 ) .

D. Turn shaft (1), listen and

feel for rubbing or binding.

Does shaft turn smoothly with no

unusual noises?

CONTINUED ON NEXT PAGE

3-29

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