| John Deere Tractors Discussion Forum |
Topic: Re: whats burning my points?
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| MSD
12-27-2012 15:21:32
67.4.60.56
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Did I read once if you have the polarity wrong on the coil it will cause points to burn also?
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| John T
12-27-2012 16:49:15
216.249.82.117
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Re: whats burning my points? in reply to MSD, 12-27-2012 15:21:32
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| | If coil polarity is reversed it will still spark but the spark is weaker and the ignition system isnt as efficient with more heat losses, and the coil has to work a bit more as the voltage has to ramp up slightly higher. It doesnt affect coil current or points life to any major extent, however. John T
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| MSD
12-27-2012 20:35:27
67.4.60.56
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Re: whats burning my points? in reply to John T, 12-27-2012 16:49:15
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| Thanks John, wasn't sure if that is what I had read or remembered.
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| John T
12-28-2012 05:15:39
216.249.82.117
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Re: whats burning my points? in reply to MSD, 12-27-2012 20:35:27
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| | So theres two of us with that problem lol lol The DC LV Primary winding resistance (like 3 ohms) is the same regardless in which direction current flows through the coil....and the coil current is the current the points have to switch on and off and on and off,,,,,,,,,, John T
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