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tuc 
Bronze Level
Joined: 20 Mar 2016
Location: verona ky
Points: 4
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 Topic: grounding of battery
Posted: 20 Mar 2016 at 6:01pm |
I have a d15 serial number 7840 it is 12 volt .my it shop book says it should be a positive ground but t don't appear to be that way. Is it spuppose to be a positive ground
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jaybmiller
Orange Level Access
Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 25270
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Posted: 20 Mar 2016 at 7:27pm |
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if it has a generator, probably was +ve ground at factory BUT someone may have made it -ve ground so that jump starting it was 'spark-tacular' ! having all vehicles the same makes it easy to jump them ! Now if it has an alternator, it really is a -ve ground as very,very few =ve ground alternators are made.
Jay
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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DougS
Orange Level
Joined: 03 Nov 2011
Location: Iowa
Points: 2490
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Posted: 20 Mar 2016 at 8:16pm |
 tuc wrote:
I have a d15 serial number 7840 it is 12 volt .my it shop book says it should be a positive ground but t don't appear to be that way. Is it spuppose to be a positive ground
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Check and see which battery terminal is run to ground. If it ain't broke, don't fix it. Just remember how it is configured.
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7639
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Posted: 20 Mar 2016 at 8:53pm |
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All D15s left the factory as 12 volt positive ground. At some point in its life someone probably changed it to negative ground. No big deal, I do that to all of my tractors.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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concretepumper
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Joined: 02 Jun 2014
Location: Wentzville, mo
Points: 94
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Posted: 20 Mar 2016 at 10:09pm |
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Talked to a guy a couple years back with a farmall and told me he was aggravated with the fact he only got one year out of a battery and did this for several years until he figure out the tractor wasn't neg ground but was pos ground, he said he would of never guessed it, once he changed it correctly, the battery was going on 3years and counting
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