Farmall B magneto update

Posted by bkpigs on August 19, 2010 at 19:57:53 from (75.132.223.199):

First off, thanks everyone for the previous ideas and pointers. This is my first mag. tractor so it is a bit of a steep learning curve compared to the battery ignition.

I still am having no luck. I re-gapped the points to .013, no spark. Put the old points back in, no spark.

My confusion really builds when I started doing some contenuity testing.

I get connection between the grounding bolt on the side of the mag. and the frame of the motor. I disconnected the switch from the grounding wire to eliminate the posibility of a faulty switch during this test. Is this normal? I would think not but if the mag. is producing a direction of flow and the windings in the mag are back feeding then it would be, right?

I also get contenuity between the spring side of the points and the solid side of the points. I even removed the spring side completely from the distributor and left it only hanging by the wire. Still got contenuity; that can't be right, can it?

As I stated before in the previous post I did NOTHING to the mag. itself. I just changed the points and cleaned the rotor drive gears (which I got back into the right time).

I have been having my dad hold the wire that comes from the top of the mag. next to a spark plug while I crank and there is no spark. Even if it was out of time (the rotor and such) I should be getting a spark.

Could it be the million to one chance that when I changed the points something inside the mag decided to call it quits? If it did I should have bought a loto ticket that night.

Thanks for all of your contributions. Hopefully I will be able to get the tractor going by Sat. morning to get it to my old hometown's German festival.

Replies:

• Re: Farmall B magneto update gene bender 10:50:05 08/20/10 (0)
• Re: Farmall B magneto update Theman 05:57:16 08/20/10 (0)
• Re: Farmall B magneto update Bob 22:18:32 08/19/10 (0)
• Re: Farmall B magneto update farmerjohninpa 20:09:54 08/19/10 (0)

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