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Scoobyshep 3 9v in series - no change in output voltage. Left full 27 vdc hooked up for at least a minute straight. it's pulling down about a quarter of an amp between the 3 9v and the yellow/blue if that makes any difference. Also, the regulator is labeled as UVR 8172 TC if that makes any...

Yes, engine running. Haha. I will start with short taps of the 27vdc, but if that doesn't work and I work up to full time power, is there a max amount of time I should apply those 27 volts to yellow/blue?

Scoobyshep OK, I tried 9v to blue / yellow in increasingly long taps, working up to full time 9v with no change in output voltage. Ran 2 9v in series and started introducing 18vdc in short taps, working up to full time application of 18vdc between blue / yellow with no change in output...

Scoobyshep Ah, ok....I was being ultra careful and only did about about 1 minute of very short taps. I will try again tomorrow with slightly longer taps, slowly working up to full time 9v. If that doesn't do it, I will add another 9v in series and introduce 18 vdc, starting in small taps...

Scoobyshep Did as instructed; no change in output voltage. when tapping the positive to the yellow, I was getting some little 9v arcing, so something was definitely happening but it made no difference in output voltage.

Scoobyshep I just want to confirm this is what I'm to do: Disconnect Blue Leave yellow hooked up 9v battery - negative to the disconnected blue wire, not the terminal it came from positive to the still-hooked-up Yellow wire/terminal in short taps only Watch the output...

Scoobyshep / kloppk : Test results: Motor off, Yellow & Blue disconnected = 10.8 ohms Motor off, Red & Red disconnected = 1.2 ohms On startup, Yellow & Blue = While cranking/initially startup .07 vac which trickled down to about .015 vac over the span of 15 seconds running While running...

Thanks for the info. To clarify - here's the operating manual which has wiring diagrams: https://www.steelsoldiers.com/attachments/tm-52480-23-generator-pdf.674268/ Page 69, lower left quadrant, I'm looking for the voltage between "Exciter - YELLOW" and "Exciter - Blue"? Used to be in the...

Howdy. Last week I picked up an Applied Companies 23kw 3 phase genset / 120k btu ECU trailer. After some basic mechanical fiddling, I got the Perkins diesel running nice. (except I don't think the glow plugs are being energized due to no glow plug light, but it's plenty hot here in TX for...

Ended up taking the overwhelming advice and dropped the trans off at a shop to be rebuilt. I'll know what we're looking at within a week. Interestingly enough, I found out this '97 M1097A2 has the MP2225 transfer case. One of the coolant (antifeeze) lines going into it is snapped off, and...

Thanks for that, it is an impressive write-up, but far more involved than I'm looking to get at the moment. Rebuilding this 4l80e is the way to go for me.

I'll try and find that thread. Thanks!

Great info! Much appreciated.

Is there a direct (or reasonably direct) swap from a civilian donor?

Yeah, that seems to be the best course of action. I'll probably be able to dig into it next weekend hopefully.

I just got the truck delivered. Before attempting to start/move it I checked all the fluids. Noticed the tranny was pink, foamy and smelled burned. Found a completely missing dipstick grommet which I suspect was the point of entry for the water. Dropped the pan, changed the filter...

Thank you!! Some great information in here. Much appreciated.

Hello all. I've conducted diligent forum searches but haven’t found an appropriate answer. I recently picked up a 1997 M1097a2 with the 6.5l and a 4l80e. Further inspection shows water intrusion into the transmission, likely from a missing dipstick grommet. I rolled the dice and attempted...