Posted by Janicholson on March 05, 2013 at 19:07:25 from (74.60.94.18):
In Reply to: Re: Farmall C wiring posted by petra79 on March 05, 2013 at 16:24:53:
If the Gen and Field wires were hooked up backwards Severe voltage regulator damage could occur. THe Generator is capable of producing voltage on its own. (residual magnetism in the field's iron pole pieces) this when pumped directly into the regulators field (because the gen output was hooked there) could fry the field control relay contacts. The field windings in the Gen would not hurt the cutout relay in the regulator, but it is difficult to say (without looking at the regulator guts) if it is usable. The field circuit in the regulator is a grounding system. The field is supplied with voltage from the armature, and grounded (through vibrating points) in the VR. Your connections are what I would expect. A condenser like thingy on the - coil terminal should be taken off. (assumes there is a condenser in the distributor) If there is 4.5 or more amps running in the wire going to the coil when the points are closed and ignition is on, it probably needs a ballast resistor. A 12v coil with (no resistor required) written on it would be a good substitute. If the current is more like 3 to 3.5 amps all is well with the coil. (at least for now) Be aware that when the ignition is turned on the amp meter should go left to discharge. If it moves to the right, it is hooked up backwards. Looking at the regulator points is a good idea. It should have the cover on when running the engine, as the cover changes the magnetism and might result in errors. Charging voltage into a fully charged battery should be above 14 volts -- usually 14.2 to 14.6 is considered normal measured across the battery. A digital meter (unless very nice) might read trash voltages because they sample, not average. An analog type meter (needle) averages the "noisy voltages in a mechanical VR generator system. Let us know what happens. Jim
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