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Premium Member
1998 ML320
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44 Posts
Discussion Starter #1
Well, after 22 years and 290k miles, she finally gave out. Likely the voltage regulator bit the dust, but when I got the serpentine belt off the alternator bearing was noisy enough for me to replace the unit. I’m hoping to get 300k outta this one (reman AC delco).

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2001 ML430
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464 Posts
I just rebuilt mine last week. New regulator, bearings, and a new slip ring. The only part I did not replace was the diode bridge.
 

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Registered
1998 ML320
Joined
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66 Posts
I just rebuilt mine last week. New regulator, bearings, and a new slip ring. The only part I did not replace was the diode bridge.
Where did you get the parts? I’ve looked around for rebuild parts for these alternators and haven’t found much.
 

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Registered
2001 ML430
Joined
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464 Posts
Bearings were from a local bearing house, ebay has them as well. Regulator assemblies are everywhere, but make sure you buy a Bosch unit. Slip ring was from Amazon. Some quick searching for Bosch alternator parts will give you volumes of sources to get parts. Make sure you have your bosch number off your alternator.
 
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