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Posted by on October 8, 2006, 9:02 pm
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The regulator (rectifier) that I have is smaller one about the size of
a small deck of cards (engine is a 16 HP Kohler K341AQS). It is
mounted on the fan shroud, with 3 connectors, as you mentioned.
I have thoroughly tested everything I can think of as suggested in the
other posts (checking ground, voltage, etc) ... so I will be taking the
battery in to be tested and will post the results of what happens.
Thanks again!!
--
Chris
SAMMM wrote:
> a characteristic of the kohler charging regulators is that on a totally dead
> battery, they won't do anything.
> when the battery voltage gets to about 8 volts if i recall correctly,
> they perform well.
> try charging the battery with a battery charger and check the voltage
> for proper charging.
> remember, there may be a current draw on the battery which is
> running it down over time.
>
> incidentally, which type regulator is in your tractor?
> they come as a small heatsinked unit about the size of a deck of
> playing cards and also a larger unit about twice or 3 times that size.
>
> the 16 hp magnum twins on up use a smaller unit mounted in the fan shroud
> with 3 push-on connectors.
> i use that type in an industrial app with a transformer to keep batteries
> charged.
> good luck, sam
>
>
> --
>
> > Hello:
> >
> > I have been trying to troubleshoot an electrical problem on my tractor
> > (John Deere 300 with 16 hp Kohler single cylinder) and so far I am
> > totally stumped. The problem is this: The battery seemed to be out of
> > juice so I had to jump the tractor from my car. The tractor started
> > right up and ran.... but as soon as I disconnected the jumper cables
> > from the car, the tractor stalled immediately.
> >
> > I am assuming the tractor should continue to run on its own power, so I
> > started testing the charging system on it. The stator voltage was
> > fine, around 30 volts AC. However when I went to check the voltage
> > coming out of the rectifier, my multimeter went crazy and I could not
> > get any consistent reading when connecting the negative of the
> > multimeter to the engine block. It was as if something was interfering
> > with the multimeter. But when I used the frame of the tractor for the
> > negative, I finally got a consistent reading of around 0.3-0.7 volts
> > DC. The negative battery terminal runs directly to the engine block and
> > that connection was good. So immediately I assumed the rectifier was
> > bad. After connecting a new rectifier still the same problem.
> >
> > So next I hooked up the jumper cables again and shut off the car,
> > keeping the cables attached.. and the tractor continued to run just
> > fine. I checked the voltage across the tractor's battery and it was
> > around 14.5 volts. I shut off the tractor with the key and the voltage
> > dropped to around 13.5 volts. When I saw this I assumed the charging
> > system was working and that my earlier assumption of a bad rectifier
> > was incorrect. Then I removed the jumper cables and the voltage then
> > showed 10.5 volts. Is it possible that the tractor's battery is bad or
> > shorted, causing these issues???
> >
> > Thanks in advance for any feedback...
> > --
> > Chris
> >
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