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C220 CDI W204 2007 Alternator Brushes

C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

C220 CDI W204 2007 Alternator Brushes

Old 02-10-2019, 06:02 PM
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C220 CDI W204.008 2007
C220 CDI W204 2007 Alternator Brushes

At rest the battery reads 13.5V and at idle or 800 RPM, the charging voltage reads only 13.8. The battery is a fairly new Varta, the original one had a life of 10 (!) years. I will have to rev it up and check if the charging voltage goes above 14V as it should do. But sooner or later the brushes will have to be changed.Do you know if that can be done while the alternator is still inside the car or not? Any tip for the purchase of the brushes? Is it easy to read off the alternator model number to order the right brushes?
So many questions, so little time!
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