Is my case 440 a positive ground?

jsteedley

Member
I have a 1962 gas 440 tractor that I am trying to fix..according
to what I read this tractor was originally a positive grounded
system. The generator
that is on it looks to be the original as it has the tachometer
gear on it...2 questions...how can I tell if the tractor is positive
or negative grounded AND how can I tell if it is a 12 volt or 6
volt system? Thanks!!
 
Welcome to the Case forum. I am not well versed with the 440,although I would like to own one. I did a quick check on Tractor Data.com and selected {Case} then clicked on 440. There is a Nebraska test#744 on PDF that gives you a lot of great information on that tractor .She is a 12 volt system . Do not hesitate to join in the forum and ask more,or share your experience with your tractor.Good luck .Chuck
 
Check your tractor serial. Tractors made in Rock Island will have serial 6xxxxxx and will have a positive ground and tractors made in Racine will have serial number 8xxxxxx and have negative ground.

Gene
 
Gene, I have read the Racine and rock island distinction before but my it book differentiates positive and negative grounds by serial #'s not production sites....I just don't want to mess anything up...so I wonder which is it that determines positive from negative....production site or serial #??
 

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