Posted by spiffy1 on August 06, 2009 at 20:24:16 from (70.41.135.42):
It's on a Allis's Delco 6V postive ground, not a Farmall, but I post around here more often, and suspect it should behave the same.
The cut-out was allowing full charge all the time, the acid in the battery box indicated it had been going out for a while (not used for any work though so it's hard to notice charging issues), but the old battery had paid it's years anyway, so it has a new one now.
I could have ordered a cutout, but a VR upgrade was available and seemed to me a good choice for optimal battery life.
I connected the B and L as the wiring harness only provides one wire, but this made little or no difference from just B.
Now the perplexing part; it charges fine and seems to regulate, but about 75% of the time (now this is only 10 minutes or so, and never drove an inch) it vibrates wildly - about on center with the charge rate, but nasty swings at a high frequency.
Shorting the field back to ground, it settles just fine; though plenty high.
I'm going to see if the base just isn't taking a good ground - any other ideas?
Far as I know the generator has never been rebuilt, so nasty brushes or something inside may be up too, but I'm taking it to a threshing show this weekend and was hoping for something that I don't need to order parts.
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