28.5 VDC Generator Set

Carter · Post by **Carter** » Wed Sep 10, 2008 4:45 am

A buddy of mine, Ralph, gave me this generator set last week. it's a MEP-025A made in 1968. It didn't run and he was not going to use it or try to make it run. It's a gas powered unit that makes 28.5 volts DC, 52 amps. I was able to get it running after removing and cleaning the stale gas smelling brown goo that had clogged the carb, tank, lines and pump. It does generate power but I need to install a new voltage adjusting variable resistor because the one that's in it has a burned/dead spot. I plan to use it to jump start vehicles or to power a trucks radio setup when the engine is not running. You just can't beat free. Carter

Nickathome · Post by **Nickathome** » Wed Sep 10, 2008 8:36 am

Nothing wrong with that.....

rixm37 · Post by **rixm37** » Wed Sep 10, 2008 10:04 am

No you can't beat free. And when you can make it work wow that's even better

Carter · Post by **Carter** » Wed Sep 10, 2008 10:57 am

Nickathome wrote:Nothing wrong with that.....

And it's OD, I can't resist free and OD

Carter · Post by **Carter** » Wed Sep 10, 2008 11:04 am

rixm37 wrote:No you can't beat free. And when you can make it work wow that's even better

Maybe someday I'll actually need it, who knows. I'm working on a deal to get another M37 project truck and the generator may actually come in handy, at least that's what I told my wife

Carter · Post by **Carter** » Tue Sep 23, 2008 11:38 am

The voltage control variable resistor was burned out. After finding out what a new one cost from several parts houses plus shipping then found new boxes at Army Surplus Warehouse for not a lot more money I decided to replace the entire box. The new one was dated 9/86 but looked like it was made last week. Now the set makes 28VDC and can be set as low as 20 and as high as 40VDC. I have yet to load test it but I believe it should work well.
The first shot is of the set with the old box, the others are of the new one installed. Carter

Lifer · Post by **Lifer** » Tue Sep 23, 2008 2:00 pm

Nice! You can't beat that with a stick!!

Carter · Post by **Carter** » Tue Sep 23, 2008 3:02 pm

Lifer wrote:Nice! You can't beat that with a stick!!

Lifer, the control box was only $79.90 delivered and was a just about double what the resistor cost also including delivery and I got all the rest of the components and the box with it's new data plates in the deal. You are right, you can't beat that with a stick. The unit runs great now and all I have to do is figure a way to put a load on it. Wish I had a load bank.
[URL=http://i109.photobucket.com/albums/n62/ ... G_0876.jpg]

28.5 VDC Generator Set

28.5 VDC Generator Set

Generator

Re: Generator

Installed new control box