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Help! ALternator brushes - wearing unevenly
Posted by Todd inMA [Email] (more from Todd inMA) on Mon, 17 Jul 2017 18:13:29
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My 1992 900S CV dash alternator light (battery light) came on yesterday.
Brand new battery about a month ago and the Alternator has been working fine.
So I pulled the brush/voltage reg tonight - the brushes have about 9.4 mm length so should be fine EXCEPT:
One of the two brushes had a ridge on it causing it to be longer than the other one - and so I think the second brush wasn't making contact.
So I took a dremel with a small grinder and ground the ridge on the brush off so the two brushes are about equal in length.
What could cause this uneven wear - some sort of internal problem in the alternator - perhaps slip rings?
Any help is much appreciated as always.
Todd inMA
1997 9000 CSE Turbo - 162k miles
1992 900S CV - 212k miles
1990 900 - sold at 284k miles.
posted by 96.237.1...
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