Without it?

I have an alternator that seems to be chewing through voltage regulators. I think it is a warn/warped rotor or something, but it has broken three of them now in the same fashion, and now it is seemingly occurring more quickly.

I have a new alternator, but can't install it until Friday. Is the alternator doing anything without the missing brush?

It doesn't seem that the battery is discharging at a high rate. I drove 50 miles with the lights on and the battery was not dead. What do the two brushes do?

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