Hi all,

I have a 10kw Onan generator, model MDKWB Series E, and the alternator has seized - again!

It happened the first time back on 11/23/23 and I took it to Holt Generator Shop in Jacksonville,FL and they replaced all three bearings and all seemed good, until today. Seized again, but now I'm in Key West and there are NO alternator shops here. I've called seven shops and no one works on these things.

An OEM one looks like it is running $600+, which just seems ridiculous to me. So, two questions:

1. Has anyone replaced their alternator with a comparable aftermarket one - and been happy with it? The model number for my current alternator is 185-5431 and I'm looking for a like-for-like drop-in as I don't have the ability to change/alter mounting brackets/pulleys/etc.

2. Can anyone recommend someone in the Key West/Marathon areas that has the ability to work on these, including replacing the bearings?

I'm going to disassemble it when everything cools down and if I find out it is something else I'll post back. But for now, it definitely looks like a bearing issue.

Thanks in advance!!
Kyle