[AT] AC B Mag question

[Gene Dotson]

    Ivan;
    Just because the points are new doesn't mean they are good. Many have 
been around for some time and the tungsten contacts corrode from non use. I 
have gotten a couple sets that I have had to dress to remove the corrosion. 
I use a diamond burnishing tool that is designed for cleaning electrical 
contacts and leaves a very smooth, shiny surface. Check continuity through 
the points by disconnecting the condenser and ground leads and check with an 
ohmmeter. Resistance should be near 0 ohms with points closed and infinity 
whth points open. connect ohmmeter to disconnected stud on one side and to 
base of points on the other lead.
    It is unlikely that any other part has failed from non-use. Possibly 
moisture that can be removed with WD-40 and compressed air.

                        Gene


----- Original Message ----- 
From: "Ivan Cousins" <ivancou at windstream.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Monday, September 21, 2009 4:20 PM
Subject: [AT] AC B Mag question


>     My brothers is one of these ran when parked , sat for the last year 
> now
> . I picked up points and condensor while I was in Portland so I'm assuming
> that is not the problem .  But it still wont fire .
> He called me yesterday and said there are two wires coming from the coil
> ,thought maybe one was a ground  and the other went to the points . So he
> wired it that way and nothing .  He thought maybe he didnt have the points
> gapped right but at that point he was fed up with it and quit .
>  Ok it has a Wico C mag  , and odd ball for that tractor but it did work .
> Anyone familiar with that mag , able to give me a few hints .
> Herb , I know its the right color for you .
>
> Next question ,is there a book available that gets into the down and dirty
> on that particular mag  ?   I have one for my Farmall , and do have Neil
> Yerrigans book . Come to think of it I need to find it and flip thru it .
> My problem is its 45 miles away and I cant just run down there and back so 
> I
> just cant run over after work . Looks like a road trip this weekend . 
> The
> question of two wires is what has me .  Thanks, Ivan
>
>
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at