I don't know if its a Class A system like many Delcos used on Deere and IHC and Oliver or a Class B like used on some Fords and Massey Harris etc. If its an A the Field circuit begins on the third brush, terminates out the gennys FLD post and then gets its regulated ground via a Low High charge switch or a Voltage Regulator.
If its a Class A System (suspect if its a Delco) below is my Troubleshooting Procedure. It also tells how to Polarize and how to determine if non charging is a Genny or a Voltage Regulator problem in Para 5.
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Today's Featured Article - Memories of a Farmall C - by Monty Bradley. When I was a child, my grandparents lived on a farm owned by a Mr. Walters. The crops raised were cotton and soybeans, with about forty head of mixed breed cattle. Mr. Walters owned two tractors then. A Farmall 300 on gasoline and a Farmall C, that had once belonged to his father-in-law, and had been converted from gasoline to LP Gas. Many times, as a small boy, I would cross the fence behind the house my grandparents lived in and walk down the turn row to where granddaddy would be cultivati
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