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John Deere Tractors Discussion Forum
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Re: Generator still won't charge!

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John T

02-11-2013 17:10:02

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Heres a few thoughts:

At the shop it may have been Polarized for Neg grnd although your tractor was originally Pos but as long as you re polarized it she should still be okay....

A solid state cutout has to be connected at correct polarity or it wont let the gennys current flow into the battery to charge it...If wired wrong all you do is reverse its leads....

You have NO VOLTAGE REGULATOR so it obviously does NOT need grounded,,,,,,,,you only have a solid state diode (cutout relay) a series pass through provided at right polarity

Of course the gennys frame needs a good chassis ground just like the battery well DUH

Failing the motor test at 6 volts puzzles me???? If I didnt know better Id still suspect the genny

The ammeter is like a near short circuit, there should be hot battery voltage on BOTH terminals with respect to frame ground, if its bad/open the gennys current cant charge the battery....

I do know on the SM 2029 JD M wiring diagram theres a minor mistake but I forget where???? BASICALLY The gennys output goes thru the diode then thru the ammeter then to the hot ungrounded battery post. If thats all a good circuit and she dont charge with a grounded Field Id still suspect the genny

John T

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