Thread: How to tell if alternator bearings are going......
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Old 10-05-2017, 01:08 PM
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Well Rock was nice enough to supply the bearing number: NATIONAL 303CC Ball Bearing; Bore=0.6693", Outer Diameter=1.8504", Width=0.5512" Drive end

Apparely Rock Auto does calles it a communtator: Alternator/Commutator end bearing:

NATIONAL 201CC Ball Bearing; Bore=0.4724", Outer Diameter=1.2598", Width=0.3937" 70 amp

NATIONAL 201S Ball Bearing; Bore=0.4724", Outer Diameter=1.2598", Width=0.3937 55 amp
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