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I mentioned this a long time ago but did not have pics. This was in my 53 M37. Anybody see this kind before?

I have in pictures. Not in person. Just a different style body.

It's a totally solid state regulator but I don't see how 28v will work for me, it wasn't hooked up so I pulled it.

One of several transistorized 28V 25A regulators by a few different vendors. Motorola, and Vap-Air also made them. Leece-Neville made the 100 amp version. They are interchangeable. I assume you said it won't work for because your truck has been converted to 12 volt?

cuz wrote:One of several transistorized 28V 25A regulators by a few different vendors. Motorola, and Vap-Air also made them. Leece-Neville made the 100 amp version. They are interchangeable. I assume you said it won't work for because your truck has been converted to 12 volt?

Cuz,
My truck is still 24v but the regulator is 28v, not sure if that's compatible, what vehicles used a 28 volt system?

Our trucks are 28 volts regulated to 24 volt. Kind of like a 12 volt system actually produces 13.5-14.5 volts and is regulated.

Actually you have a truck with a 24 volt battery and a 28 volt electrical system. The generating system has to be a couple of volts higher to fully charge the battery. As an example a car with a 12 volt battery has a 14 volt electrical system. Regulated to 24 is not quite correct. They are usually regulated to 28.5 and as long as your generator is above 1200 RPM that is about where the system voltage will stay.

Bottom line is that regulator is fine for your truck as long as the generator has the same rating and when you get around to running the engine and generator then use a digital voltmeter and check for the correct system operating voltage of 28.5.

Thanks guys,
What threw me off is that other regulators say 24v or 12v or 6v not the actual charging voltage. I thought there was some other MV's around that actually used 28v, makes sense now. Just wanted to make sure.
Bob R