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Oh, the current diodes are ashes. haha. So where am I taking these resistance readings? I assume across the various windings? Looking for continuity to ground?

Ok, I ordered a 'megger' insulation tester and should be able to spend some time on this in a few days. I'm going to research exactly how to do the test and what readings I'm looking for, but any tips or pointers would be greatly appreciated!

Thanks for the info! To clarify - the exciter is the same as the rotor/rotating assembly? I'll have to do some research but I' assuming if I remove the diodes again, I can take resistance reading in place of the 6 diodes and look for a dead short?

The mecc alte rep just sent this 700+ page manual. I'm hoping there's some troubleshooting flowcharts and/or various specs that I can start pouring over. I see on page 45 that it appears I did install the diodes in the correct polarity. Which makes sense because when I acquired the generator...

Mecc Alte would not give that up. They also would not give any of the specs on them, and when they arrived they showed up in a clear plastic baggie and have no markings on them aside from the band on one side. I spent a considerable amount of time trying to find diodes that did not cost $27 a...

That doesn't sound good. What's the remedy?

Unit: Applied Companies 23kw 3 phase genset / 120k btu ECU trailer Trailer tags: GETT Trailer Assembly (17v) 1vpw8 (1p) 01-p54234e001 Applied Companies 23kw generator, part # 52480, model # 20RFH33DWLP Generator identifiers: On the alternator / genhead: SWP southwest...

@Scoobyshep @kloppk - Hoping you guys have some insight for me. Installed the new AVR today (opted for the correct one, not a universal one). After install I'm back to getting 4 VAC out of the alternator, and across red to red at the AVR. However, If I try to flash the yellow/blue wire with...

Update - Still getting between 40-60 vac out of the alternator. Went back to step 1 of the troubleshooting and re-verified some steps. Red to Red at the voltage regulator is about 33 vac when running. When I try and flash the blue / yellow at the voltage regulator with a 9v battery, anything...

Update - Thanks to everyone and their suggestions. Turns out I didn't have to pull that rear bearing housing at all. I forgot the generator spins, and after remembering, I was able to bump it over and access the diodes. Spoke to the sole Mecc Alte dealer in the US. They sell a ton of these...

Right on; I appreciate it.

Yeah, as soon as I touched the DVOM probes to the diode leads, they just crumbled. Do you know how this bearing carrier comes off? Do I need to use a puller, or should it just pry off?

Yeah, after I posted I realized pictures would be helpful...haha. Thanks!

@Scoobyshep @kloppk I got distracted by some other projects, but I'm finally tearing back into this generator. This morning I removed the rear vent cover to try and find the diodes. As expected, it was tight and I had to disassemble the generator body slightly, but I'm now working wide open...

You know, you make a good point....I've got absolutely no idea what a crane would cost to lift it onto a trailer. I just assumed it was going to be astronomical. I called the yard POC who confirmed they offer zero assistance loading and I'd have to hire a crane.

Howdy all. Has anyone picked up one of these bridge erection boats themselves when it's on a cradle and the yard has zero loading capability? Curious how you did it. Hiring a rigging company to lift it onto my flatbed trailer is going to kill the deal. It looks like these cradles are almost...

Scoobyshep ok, perfect. I was just reading the diode test section in the manual kloppk linked and it lays out the procedure pretty clearly. I shouldn't have an issue once I can get to them. I will also try and reflash the genhead as outlined in this manual. Hopefully I'll have some results...

Scoobyshep Ok, cool. I will see what DC power supplies I have around the house and may be able to cannibalize one for a higher voltage to try what we've been doing. I'll also look into the 12vdc / limiting resistor process kloppk linked. If all fails, I guess I'm going diode hunting.

kloppk Thanks for the link! I'm reading it now. From what I understand, I need to find the diode bridge, then test the resistance in each diode. I'm looking for a high resistance in one direction, low in the other? I have no idea what a diode bridge looks like or where on the genhead it is...

Yes, when powering the coil with 27 vdc, the meter was showing .25 amp draw between the positive lead of the battery pack and the yellow wire/terminal. So if I buy a variable power supply that can go up much higher, say 60 or 80 vdc, with adjustable amperage under 6, I should be ok doing what...