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· Registered
1959 220S cabriolet, 1983 240D original owner, 1999 E300 turbo diesel, 1988 560SL, 2003 SLK320
3,533 Posts
Are you sure you need to rebuild it? Often you only need the voltage regulator that screws into the back of it - ten minute job Costs under $40 usually. Can get that at any of the World Pac suppliers.


· Premium Member
1997 S600 (sold)
4,675 Posts
Discussion Starter · #3 ·
Actually, no. The charging system is fine to the extent that the idiot light

on the dash isn't lit up. But, there is a racket coming from the belt driven accessories on my car in the region of where the alternator and secondary air pump are located. I can't really tell which one is responsible for the noise. Sounds more like bearing issues and could also be pully bearings I suppose. I figured I would start with the alternator. I don't know how many miles are on the current alternator, so I figured I would look at replacing the bearings. Then I figued I may as well do a whole rebuild (bearings, brushes, voltage regulator, and whatever) if I'm going to take it out.

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