Positive ground

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   My D14 is running a 12 volt battery with negative ground.  Actually starts pretty good compared to my 6 Volt B.  I am pretty sure D14s started life with a positive ground.  

I am sure this has been asked before but I don't remember the answer.  Does the starter and generator care about the direction?  ...something about them getting polarized once they are installed sticks in my mind.   

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Rick of HopeIN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Hope, Indiana Points: 1324	Post Options Post Reply Quote Rick of HopeIN Report Post Thanks(0) Quote Reply Topic: Positive ground Posted: 10 Dec 2010 at 7:02pm
	My D14 is running a 12 volt battery with negative ground. Actually starts pretty good compared to my 6 Volt B. I am pretty sure D14s started life with a positive ground. I am sure this has been asked before but I don't remember the answer. Does the starter and generator care about the direction? ...something about them getting polarized once they are installed sticks in my mind.
	1951 B, 1937 WC, 1957 D14, -- Thanks and God Bless

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Gerald J. Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636	Post Options Post Reply Quote Gerald J. Report Post Thanks(0) Quote Reply Posted: 10 Dec 2010 at 8:53pm
	The generator HAS to be polarized before starting or it can fry the voltage regulator. The coil and ammeter connections need to be adjusted so they match the battery. The starter doesn't care. The positive terminal on the coil needs to match the positive terminal on the battery. E.g. for negative ground the positive terminal on the coil should go to the ignition switch with the negative terminal to the ignition points. You can check the ammeter easily. Turn on a light. It should deflect left. Start the tractor and run it fairly fast, the ammeter should deflect to the right if its connected right AND the generator is charging. If the coil is right and the ammeter passes these two tests its all OK. Gerald J.

Rick of HopeIN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Hope, Indiana Points: 1324	Post Options Post Reply Quote Rick of HopeIN Report Post Thanks(0) Quote Reply Posted: 10 Dec 2010 at 10:41pm
	Thanks, good stuff to know.
	1951 B, 1937 WC, 1957 D14, -- Thanks and God Bless