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Is the tractor guy right?

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Rob

03-24-2003 18:29:08




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Just got my 1950 8n back from the tractor doctor. I asked them to change the electrical system back to positive ground. The tractor guy said that there was no need to do that since some model 8n's came with the neg ground, and since everything was working correctly, there was no need to change to positive ground. Sounds logical to me...but is he right?




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Gaspump

03-25-2003 11:41:12




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 Re: Is the tractor guy right? in reply to Rob, 03-24-2003 18:29:08  
No Ford 8N Tractor came with a negative ground. The first Ford tractor to have a negative ground was the 172ci diesel in the 1958 model year, it was a 12V system too. The Ford gasoline powered tractors continued to have 6V positive ground systems into the 1960's.



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Dean N VA

03-25-2003 09:20:45




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 Re: Is the tractor guy right? in reply to Rob, 03-24-2003 18:29:08  
I replaced my battery last weekend and found the old one hooked up neg. ground. Now I have been known to go brain dead on occassion, but could have sworn it should be pos. ground, so, I looked in my trusty owner's manual and lo and behold it should be pos. ground. I installed the new battery correctly and my amp guage that never got off center mark now showed slightly pos. I think a belt adj. will improve that some more. But I didn't understand this flashing/polarizing the starter, so I didn't. But all seems to start and run well ?

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PeteNY

03-24-2003 19:10:08




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 Re: Is the tractor guy right? in reply to Rob, 03-24-2003 18:29:08  
Rob, He is right and wrong! Never heard of any N's coming from the factory with Neg. ground, but I have seen many that have been accidentally switched over cuz some people have never seen a pos. ground system in their life, so when the replace the battery, they install it backwards. That said, 'bout the only problem it will cause is the ammeter running backwards, if he corrected that, then why fix it? Easy fix to put it back though. Pete

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raytasch

03-24-2003 18:42:55




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 Re: Is the tractor guy right? in reply to Rob, 03-24-2003 18:29:08  
So far as I know tractor guy speaks with forked tongue; they were positive ground. As long as it is working that way I would leave it 'till I had to replace something like a battery and then switch it and flash the system. If you want to do it switch cables, reform the ends to fit, and flash the field. You may loose a little effeciency but I seriously doubt if you will ever know the difference.
jmo,
ray

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Rob

03-24-2003 18:50:04




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 Re: Re: Is the tractor guy right? in reply to raytasch, 03-24-2003 18:42:55  
The tractor guy said that the amp meter was wired backwards, so he reversed it and now it reads correctly. Sounded fishy to me, but then again, I didn't know any better. My philosophy right now is: if it aint broke, don't let Rob break it any further and have to send it back to the tractor doctor. If I do encounter any problems I will get some deatiled instructions from you tractor wizards on how to do it before I mess something up again. As always, thank all of you for all of your help!!! I hope this board stays around for a long time

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EDDIE8N

03-24-2003 19:04:03




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 Re: Re: Re: Is the tractor guy right? in reply to Rob, 03-24-2003 18:50:04  
Rob,
Actually, your ampmeter was wired right and your battery was wired wrong. N tractors were positive ground. Read a post long time ago by Dell that explained the reason for it...if I remember correctly, positive ground makes for stronger sparkies. Won't hurt anything the way it is as long as you have need for 1 forward speed and 4 reverse speeds!!!!(JUST KIDDING)!!!
EDDIE8N



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So THAT'S why .....

03-25-2003 07:34:33




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 Re: Re: Re: Re: Is the tractor guy right? in reply to EDDIE8N, 03-24-2003 19:04:03  
the French tanks are all wired positive ground! At least, according to Eddie8N's theory!



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