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JD B Generator 6 V

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Gene

05-07-2003 03:39:15

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Help--is the electrical system on a JD B 6 volt positive or negative ground ?

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Gene

05-08-2003 08:45:32

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Re: JD B Generator 6 V in reply to Gene, 05-07-2003 03:39:15

OK, how is the coil wires hooked, dist coil wire goes to pos. side of coil, ignition switch wire to negative side of coil,correct????? ??? also, my S/N is missing, is their another place to look for the orig. S/N on this "B"

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Clooney

05-08-2003 15:48:36

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Re: Re: JD B Generator 6 V in reply to Gene, 05-08-2003 08:45:32

Gene, a good rule to remember is that the same terminal on the coil goes to the distributor as the post on the battery goes to ground. Remember the distributor is actually grounding & un-grounding the coil to make a spark. This holds true on all 2-cylinder Deere's WITH AN ORIGINAL DEERE COIL, or 6 volt coil. If there is a 12 volt internal resistor aftermarket coil involved it has to be figured case by case..

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Gene

05-09-2003 07:31:05

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Re: Re: Re: JD B Generator 6 V in reply to Clooney , 05-08-2003 15:48:36

Thanks for all of the info. guy's

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John T

05-08-2003 14:44:35

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Re: Re: JD B Generator 6 V in reply to Gene, 05-08-2003 08:45:32

Gene, if the battery is wired as pos to grnd as it was originally, then yes the + of coil goes to distributor (positive gets to ground via the points in the distributor). If its neg grounded, then the - of coil goes to distributor. The SN plate is only in that 1 place. John T

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John T

05-07-2003 05:43:50

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Re: JD B Generator 6 V in reply to Gene, 05-07-2003 03:39:15

Mornin Gene, as posted below, it plus all other 2 cylinder JD tractors came from the factory connencted with the battery positive to ground, but through the years, many got changed for one reason or another. They will usually still run and charge fine if reversed over to negative ground, depending in part upon if the coils (some of them) primary terminals are switched and ammeter leads reversed and generators re polarized. The starters are fine and still rotate in the same direction regardless.

Best Wishes John T Nordhoff in Indiana

PS I think even some earlier new generation remained positive ground until they started the use of alternators (most of which require negative ground) over generators, but Im not sure.

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cole in mo

05-07-2003 05:33:15

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Re: JD B Generator 6 V in reply to Gene, 05-07-2003 03:39:15

from the factory it came pos. ground.

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tom

05-07-2003 04:23:24

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Re: JD B Generator 6 V in reply to Gene, 05-07-2003 03:39:15

Gene,

My MT is a positive ground, which is a 1951 two cyl. I would assume yours is too, but can not confirm that for sure. If you are standing on the starter side near the battery, and the negative post [if you have a battery/starter/etc] is closest to the starter, chances are you a positive grd...meaning, the positive pole should be near the instrument panel and grounded there somewhere...I know John T can confirm this one for you...good luck, tom

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