Re: Generator on 1951 C Farmall

Posted by John T on August 03, 2007 at 04:51:32 from (66.244.83.147):

In Reply to: Generator on 1951 C Farmall posted by Greg2007 on August 02, 2007 at 19:36:02:

Greg, Heres a couple ways to tell which post is which if they arent labeled ARM and FLD as some are:

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

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