|
Unless you have a non 9N electrical system, you have a cutout relay, not a voltage regulator. I have a 46 2N that has been giving me quite a time lately with a similar problem. Let me see if I can explain. When connected properly, the generator, which produces electricity in the area of 7 volts, closes the relay causing the battery to be charged. When the voltage on the generator side of the relay drops below the voltage in the battery, the relay opens. It does this to prevent the battery from draining down by disconnecting the circuit while the generator is not running, such as when the engine is off. Now, if the relay is installed backwards, then the battery, connected as the generator, has more voltage than the generator, in the position of the battery, and the relay closes. This will drain the battery as it tries to turn the generator as a motor. Also, if the tension on the relay spring is too great, the relay will never close and the operation of the tractor's engine alone will run down the battery. Conversely, if the spring is too weak or if the gap is too small, the cutout will remain connected and the battery will drain as noted above. 7 volts at the battery is good, now we have to keep it there. Lately I have been pulling the neg battery cable off while it is not in use and the battery is staying charged. When I have the time I am going to pull the cutout and see what is happening. I think mine is staying closed after the motor is shut off. Ed Gooding posted a response to one of my messages a couple days ago. He included a graphic of a service buletin diagram showing an 8N electrical system adapted to a 9/2N. As he stated, enough farmers must have gotten fed up with the cutout relay that retrofits became common.
|
