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Case Tractors Discussion Forum
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Test for Positive or Negative Ground

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Ed in ohio

03-06-2007 17:00:24




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I would like to test for a positive or negative ground on my W3, industrial 530. The manual says it is supposed to have a positive ground but the battery was hooked up with a negative ground. I am questioning whether this is correct.

The ammeter doesn't work so i can't tell if it is reading positively or negatively. Is there a way to test which way the tractor is supposed to be grounded? Thanks

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t.thyrum

03-14-2007 04:41:32




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 Re: Test for Positive or Negative Ground in reply to Ed in ohio, 03-06-2007 17:00:24  
you can use the start motor to test for the pos or neg to graund.just konektit and se if the noise .turn raound nice...
i have a case 530 ck 1963 or my by 1966 a not sure
but a have 12Volt and the pos go to graund.
NB! know you the gear of G1096 i have some trubel
can i send you a picture of the gear.
"Norway"



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Jerry W

03-06-2007 20:43:32




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 Re: Test for Positive or Negative Ground in reply to Ed in ohio, 03-06-2007 17:00:24  
The voltage regulator/cutout relay is the determining factor if a system is + or - grounded. They usually are marked for voltage and polarity. Most everything else can function either way. Delco is usually - ground.

The coil should be wired so that the wire that goes to ground in the distributor is the same as the wire that goes to ground from the battery.

Jerry



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