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Re: Ask Your Friendly Ammeter
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Posted by chadd on April 30, 2007 at 16:28:58 from (155.92.32.116):
In Reply to: Ask Your Friendly Ammeter posted by A. Bohemian on April 30, 2007 at 15:00:17:
I am not sure if anyone else has experienced this, but the needle on our Farmall M with a Delco distributor does not deflect whatsoever even when everything is set correctly. When troubleshooting a while ago, I decided to see if there was an ignition problem. I turned the ignition on with my dad on the seat and rotated the distributor as far as was possible. He said that it never once moved the ammeter needle. I figured that meant there was a problem, so I replaced the points, condenser, checked the advance springs, cleaned the connections, replaced the cap, rotor, and wires. I attempted the same procedure again to re-time the distributor, and my dad was right, again there was no deflection on the needle. I hit the starter, and the engine fired to life and ran really poorly, as the timing was off. I turned the distributor body until I got it running perfectly and then shut it down. Did the test again, and still no deflection. It deflects when the lights are turned on, and deflects varying amounts depending on the setting of the lights. It also shows charge when the tractor is started. Maybe the ignition system is getting its power from the battery and not going through the ammeter? I am pretty sure it gets power from in the light box though. . .
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