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Case Tractors Discussion Forum

no magneto spark

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Author  [Modern View]

03-21-2010 14:37:42

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I have a Bosh MJB mag for my L and it has no spark. The points look good though they did have some white powdery corosion around them but were not burnt.Is there a way to check the condencer and the coil out or is it a thing where you replace parts until it works?

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03-22-2010 19:38:11

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 Re: no magneto spark in reply to Beagle, 03-21-2010 14:37:42  
Must be catching my Bosh on my LA when south and there is no spark took it off its in my shop waiting for me to stop playing with trains and go though it again.

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03-22-2010 20:04:15

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 Re: no magneto spark in reply to Walterdavies, 03-22-2010 19:38:11  
I'll send mine over. Might as well to two of them while your at it : )

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03-23-2010 09:18:41

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 Re: no magneto spark in reply to Beagle, 03-22-2010 20:04:15  
OK I need more fun anyway.

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03-22-2010 10:32:24

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 Re: no magneto spark in reply to Beagle, 03-21-2010 14:37:42  
thanks for the advice, I"ll check it out and get back to what I found. I do have a Case mag that will kill you with the spark but I"d rather put on the Bosch.

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John Saeli

03-22-2010 04:48:11

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 Re: no magneto spark in reply to Beagle, 03-21-2010 14:37:42  
Most Mag problems that I run across here are the result of corrosion. Take it apart & clean every connection, including the points. Set the points close, about .012. Setting the points close keeps the points closed longer, allowing the mag to build up a bigger charge before firing. Good luck.

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El Toro

03-21-2010 16:05:22

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 Re: no magneto spark in reply to Beagle, 03-21-2010 14:37:42  
Clean the points as Hoss suggested. If you still
have no fire check the mag's magnets for magetism using a flatblade screwdriver. Hal
PS; It could be a weak coil too.

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Hoss in Me

03-21-2010 15:53:33

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 Re: no magneto spark in reply to Beagle, 03-21-2010 14:37:42  
Points.They are touchy.Drag some fine sandpaper or your wifes fingernail file across them. Hoss

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