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      07-17-2022, 11:57 AM   #39
pungo
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Drives: Z4MC-X3-35i-525i, Corrado G60
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Quote:
Originally Posted by JustinHEMI View Post
Yep which is why it hasn't ran since troubleshooting revealed that.
gotcha


I just changed the Bosch alternator in my E39 for under voltage. I removed the regulator and the brushes were worn down @132k miles. After inspecting the slip rings, one of them had a pretty deep groove in it so bought a complete alternator instead of rebuilding the old one. If the slip rings looked good I probably would have just replaced the regulator/brush assembly. I'll rebuild the old alternator with new slip rings, bearing and regulator since I hate to just throw it out.
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