Sprinter SMB alternator failure

[daytripper]

I have a 2016 SMB Sprinter buildout with a Nations secondary alternator charging the house batteries in addition to a couple of solar panels. In 40k miles, I've had three of these alternators fail due to a corroded power stud. In my experience this seems like a far to common issue. If anyone else is seeing this as well, please chime in, particularly if you have found a solution.


BTW I'm in Montana where we don't salt our roads.

[Flyview]

What is the power stud that's corroding part of? The second alternator?

I would try a different brand if a few have failed this way.

[Scalf77]

Have you tried coating it with dielectric grease. I believe the second alternator is mounted pretty low correct? Does your second alternator have an external regulator, are your house batteries lithium?

-greg