Quote:
Jimmyk wrote:
Ok when ohm testing the reading went up to and stayed at 4.0 from field to ground….then went up to and stayed at 3.3 field to arm…that is with engine off and wires disconnected….would this be correct for the regulator I have now ?
Yes. The field is either internally connected to ground or to arm on the side opposite which is connected to the field terminal. The armature is connected across arm and ground.
Assuming the field is connected to field and arm, the resistance across those terminals will be the field coil resistance. Across field and ground, you are measuring the field and armature in series, so the ohms will be higher. This is what you got, so our assumption is correct.
To check your regulator, ohm between field and ground on it. You should have continuity of less than an ohm. You should have continuity, but a significantly higher value if you press gently on one of the two lower relays to open it. Again this is all on the regulator and disconnect at least the field wire before testing.
The point of this is that a generator whose field is internally connected to the armature must use a regulator that grounds the field connection. The other way is an internally grounded field, and the regulator connects it to the armature to excite it. Ford often used the latter and pretty much everyone else used the former.
This all assumes the equipment is compatible with 6V positive ground and the generator is polarized correctly. When you connected the generator to the battery, did it spin in the same direction as the crankshaft rotation?
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