The relay contacts in the VR that control charge voltage literally ground the field terminal of the gen. If it is off of the tractor, it should read 0 ohms from the F terminal to the chassis of the VR where it is grounded to the tractor. This is the high charge position and can be checked on a new VR at the parts store. When the contacts are open on the relay with the smaller contacts, using a slip of paper between them to make sure they are apart, the F terminal to chassis of VR should be between 2 and 4 ohms. This is the low charge condition. The regulator chatters between full charge rate and minimum, to regulate the voltage to 7.2 volts on average. This is a very noisy 7.2 volts as it is the average volts of the chattering points that keep it under control. A crude method, but the only way in those days. 19 ohms is not in the ball park. JimN
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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