As always thanks for the responses, really appreciated. When I had the voltage cutout on, it would only change at 10 amps, so I wasn't surprised at it doing the same with the regulator. I did adjust the third brush to the max level, and this is all she puts out. The third brush is in fact cracked which I assume would effect performance, but I'm assuming its been cracked for a long time. I did some reading on Delco regulators and one of the pages I found was from a Harley site. I felt it was an interesting read but unsure if it applies to the type of regulators on our tractors too. They show a 2 unit, and 3 unit model, where both used on tractors? I put the link below for anyone who is interested.
So if my regulator is working correctly. Why does the charge drop off at high RPM, but then start charging at 4 amps at low RPM ? Why does RPM matter? The fact that a high RPM it just drops to nothing like it "cut out" makes me curious and leads me to believe that the cutout point is too low ? One other thing that I didn't do when I installed the regulator was to re-polarize the genny, was/is that a no no even though it seems to be charging ?
Thanks again for all the responses, I avoided the electrical components of this tractor, now I am quite enjoying my learning experience.
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