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Have you tried typing the NSN: 5930-01-023-4343 into your browser? I saw several different sources, among them OSHKOSH. Got to start at the top and call.

Indeed, the speed switch is part of the field flash process.

They are all supposed to have the 90 degree adapter. But will work without.

Yes you can use the speed switch from a 30 KW, as long as it meant for a 60 Hertz machine. Look at the part number on the 30 KW speed switch, and then look in the book. What's it say?

So, your speed switch, with a part number of: 70-1105-3, listed in Figure 90, Page 293, NSN: 5930-01-018-1888, with a UOC of: CF is made for a MEP-115A, a 400 Hertz gen set. Yours is a 60 Hertz gen set. So the speed switch is not the right one for your model.

Morning! Or maybe afternoon? Its 19:19 here. Sadly, the SP relay boxes are not compatible. Lots of parts in them are interchangeable, but some are not. When you want to look up parts, go to TM 5-6115-545-24P. That's what the P is for. To let you know its a parts manual. If you have never...

OK, we are making progress here. First off, the static exciter from a 30 KW, MEP-005A is not compatible to a MEP-006A. Looks almost the same, but have a completely different NSN and Part Number. So you can not use it to troubleshoot. Where did you get the second Exciter? What is the Part...

The volt reg was the in the static exciter. Its the chassis with the card on top. I would still make sure the part numbers correspond to the numbers in the parts TM, and don't forget to look at the UOC, Usable on Code. The big box with all the canon plugs is the S/R, (Special Relay) Box. Ah...

This indeed sounds like a volt reg problem. Using the throttle adjustment cable you could not bring it over 45 hertz? Aside from the voltage problem, you should be able to get the hertz up higher. No, I take that back! The hertz reading is taken from the AC voltage output! So when you have 152...

You having any luck on this set?

Start simple. Get the meter and then we can go from there. This is not rocket science! If I could fix these things, so can you.

Get a multimeter that reads Frequency. Start the set, run at idle. Measure frequency at the 110 outlet. Monitor the meter while slowly increasing the Hertz. Does it really go up? If so, how far. Normally, if the gen set overspeeds, the idiot light comes on, and then shuts the set off. At this...