LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND, RUBBING OR BINDING IS FELT WHEN TUBEAXIAL FAN BLADES OR LEFT COOLING FAN BLADES ARE TURNED BY HAND-continued

9-2835-255-34

CONTINUED

3-2. TROUBLESHOOTING

h. LOW PRESSURE COMPRESSOR

(6) ES-33.

LOW PRESSURE COMPRESSOR

CONTINUED

RUBS OR BINDS WHEN TURNED BY

H A N D , RUBBING OR BINDING IS FELT

W H E N TUBEAXIAL FAN BLADES OR

L E F T COOLING FAN BLADES ARE

TURNED BY HAND AND MORE THAN ONE

HALF OF ACCESSORY GEARBOX (AGB)

M A G N E T I C PLUG IS COVERED WITH

METAL CHIPS. - C O N T I N U E D

CONTINUED FROM STEP 1

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 bearing carbon seal.

Lift end (2) of shaft (1)

slightly to center shaft

(1), then push shaft (1) in

to establish clearance

between power turbine disc

(3) and nozzle (4) and to

load No. 5 bearing (5).

B. Turn shaft (1), listen and

feel for rubbing or binding.

C. Check rotation of power

turbine in rear engine

subassembly (6) by turning

shouldered shaft (7)

clockwise. Shaft should turn

smoothly and no unusual

noises should be heard.

both

shafts

turn

smoothly

with

unusual

noises?

Go to step 5.

CONTINUED ON NEXT PAGE

3-256

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