Generator on 1951 C Farmall

1) If the Gennys connection posts are different sizes, the larger is the Armature and the smaller is the Field.

2) If you remove any wires/leads to either post and use a decent ohm meter on the R x 1 scale, attach one lead to a clean metal portion of the case/frame, and whichever genny post has the most resistance to case is the Field and the other one the Armature. The resistance on the Field post (maybe 4 to 7 ohms vicinity) should be 3 to 6 ohms more then the Armature post to case/frame cuz it has the added resistance of the Field windings in series with the armature which leads to case/frame via the grounded brush.

Polarize the genny before you start her up.

John T

To polarize (assuming you have a four-post regulator that mounts below the generator) get a jumper wire. Clip one end to the BAT termial on your regulator. Turn your ignition on, leave tractor off. All you have to do is touch the ither end of the jumper to the GEN termial on the regulator. It should give you a little spark. If it does, you're done.