Re: field circuit resistance on Farmall B

Posted by Bob M on March 31, 2008 at 05:10:37 from (151.190.254.108):

In Reply to: field circuit resistance on Farall B posted by dads b on March 30, 2008 at 20:55:34:

Here's a backside view of a switch as on your B. The field resistor is the wirewound unit at the bottom. Seems to me the correct resistance is 3 or 4 ohms - however I'm only going from memory here...

However if it were mine I'd replace the cutout relay with a voltage regulator. The V/R will do a much better job of maintaining the battery, and it will eliminate the need for the field resistor.

I believe the fuse is an SFE 10 (glass tube type, 10 amp). However later letter series and Supers used an SFE 20 (20 amp) fuse - that's what I recommend.

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