Posted by Janicholson on January 11, 2013 at 19:32:59 from (74.60.94.18):
In Reply to: voltage regulator posted by Bud Kaiser on January 11, 2013 at 18:21:56:
The VR must be hooked up to the generator before adjustment. With that in mind, there are two relays like coils in the VR. One has big contacts and fat wires when the tractor is not running, those contacts will be open do not adjust that relay, it is working fine as is. The other coil has smaller contacts and it is the voltage regulator. Its contacts are usually a combination of upper and lower stationary points with a two sided movable contact between them. That is the one on which to move the spring. The spring is responsible for causing the generator to make more or less volts. It does this by vibrating the points between a low charge rate, and a high charge rate to average an appropriate charge into the battery and support lights etc. adjusting the spring tension adjusts the average of the voltage to the desired 14.2 to 14.4 volts at the battery. The cover must be on to assure the exact charging voltage. A used text book from the 1950s on electrical systems, is a good investment. Do not go with a one wire system. A two wire based system is more responsive and allows the tractor to be charged when running at modest speeds. It also does not run down the battery if the tractor is not used for a month or so. A one wire system is basically on all the time with a pilot voltage that can and does drain batteries. Let us know what you are going to do, and we will help. Jim
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