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Allis Chalmers Discussion Forum
Show Parts for Model:

Need to work with 6 volts more often

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BIG RUH

08-29-2014 19:36:59
184.20.246.196



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Put a new 6 volt battery in my Allis Chalmers C today. Was hard to start and when it did it ran rough. I noticed the amp meter showing discharge and knew what I did. Unhooked the battery and reinstalled it as positive ground instead of negative. Work with 12 volts too much.




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soundguy

08-30-2014 15:59:03
207.30.46.70



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
i'm surprised it ran rough..

shoulda ran like normal.

the genny even repolarized and was charging ( meter reading backwards is no biggie.. )



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maxwell99

08-30-2014 09:14:09
199.255.64.19



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
I bought new heavy duty battery cables for my old tractor, it's a 12 volt system.

I think the cable were size I or 00.

Odd they both had black color wire covers, however each cable came with an id strap to install onto each cable.
One red "+" and one "-".

Works fine, but I was used to the + cable being red.



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Mike(NEEOhio)

08-30-2014 06:46:52
71.192.82.239



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
Early 12 volts were positive ground. They went to 12 some time before neg ground became standard.



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leon

08-30-2014 03:34:14
173.24.134.58



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
Though in my accumulation of a dozen or more battery equipped vehicles, all 6V are positive ground and all 12V are negative ground, I'm sure there are also negative ground 6V and positive ground 12V systems out there.



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tractorguy2

08-30-2014 11:07:15
64.147.35.94



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 Re: Need to work with 6 volts more often in reply to leon, 08-30-2014 03:34:14  
Case Sc tractors are 6 volt NEG ground and WD45 Diesels are 12 volt postive ground.



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old

08-30-2014 08:08:51
209.86.226.34



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 Re: Need to work with 6 volts more often in reply to leon, 08-30-2014 03:34:14  
Many English cars where + ground back in the 50s and 60s and 12 volts. I learned that the hard way when I hooked one up - ground and fried the alternator.



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old

08-29-2014 21:01:42
209.86.226.59



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
Your problem is you do not stop to think before you do. Now days it is sad to say many people do not think before they do something then wonder why they have a problem. Not jumping on you just saying it like it is



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tractorguy2

08-29-2014 20:04:30
64.147.35.94



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 Re: Need to work with 6 volts more often in reply to BIG RUH, 08-29-2014 19:36:59  
A model C should start pretty decent on six volts. You need to clean the rust out of the connections. Where the ground strap bolts to the battery box needs to be clean. Where the box bolts to the torque tube needs to be clean. And where the starter bolts up needs to be clean.



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