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12 volts or 24 volts


 
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donol60
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Joined: 05 Nov 2004
Posts: 108


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PostPosted: Tue Oct 09, 2012 7:02 pm    Post subject: 12 volts or 24 volts Reply to specific post Reply with quote

John Deere 4230 diesel,has 2 12 volt batteries,should they be hooked up paralel or in series,if series is everything 24 volts or just the starter? Thanks, DON
 
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Cliff Nelson
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PostPosted: Tue Oct 09, 2012 7:05 pm    Post subject: Re: 12 volts or 24 volts Reply to specific post Reply with quote

Hook them in parallel. All 30 series and newer are 12 volt.
 
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Tx Jim
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Joined: 14 Feb 1999
Posts: 17325
Location: Coyote Flats,Tx

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PostPosted: Wed Oct 10, 2012 2:33 am    Post subject: Re: 12 volts or 24 volts Reply to specific post Reply with quote


JD diesel RC tractors changed to 12V in '69. General rule is if the tractor has an alternator it is 12 volts but there were a few exceptions in the older cab/ac equipped tractors.
 
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tim s
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Location: Somerset Ohio

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PostPosted: Wed Oct 10, 2012 3:15 am    Post subject: Re: 12 volts or 24 volts Reply to specific post Reply with quote

As Cliff stated all 30's were 12 volt if 2 12's hook them in parallel,positive to positive,,if it has 2 6 volt's hook them series ,...about once a year I get one in here that is hooked up 24 volt, they spin "way" to good, and the head lights blow out. This usually happens when they have 2 6's in them,,the customer goes to the Napa store with the bad battery's and asks for 2 new ones,,the long haired counter guy with 5 ear rings gives him 2 "12 volt's" ( they look the same)and the customer goes home and puts them back in the way he took them out,,not realizing he just set it up for 24 volts .
 
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DBer60@1
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PostPosted: Wed Oct 10, 2012 3:00 pm    Post subject: Re: 12 volts or 24 volts Reply to specific post Reply with quote

Thank you for the information, DON
 
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