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Case Tractors Discussion Forum
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Case SC no power to distributor wiring ?

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RShaips

10-10-2005 07:52:42




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I have a Case SC that is not getting power to the distributor. The ignition switch has no power wire running to it and it only has one terminal which has the wire leading to the distributor. It apears to be original, I would like to replace all the wiring, its a 6 volt. I did a search and could not find a diagram that actually showed where all the wires connected in the dash. Any help would be appreciated. Thanks

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tech

10-10-2005 20:56:21




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
If you have a magneto, the single wire is required to short the spark to ground, to shut off the engine. Try to start the engine with the wire unhooked. A magneto creates its own spark by using magnets and a field winding to produce power, and a set of points to time the spark to the proper cylinder.



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RShaips

10-11-2005 06:36:45




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 Re: Case SC no power to distributor wiring ? in reply to tech, 10-10-2005 20:56:21  
Thanks I will try that. So really not having power to my light switch is not related to having no spark? Thanks for the help.



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rd/oh

10-10-2005 17:00:23




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
Sounds to me like you have a grounding switch for a magneto. i say that becaue of just of one wire terminal on switch. for what it's worth



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RShaips

10-10-2005 17:17:48




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 Re: Case SC no power to distributor wiring ? in reply to rd/oh, 10-10-2005 17:00:23  
Grounding switch? I do have a magneto and not a distributor and coil. I do not know what year this is but I do know that I have no spark or power going to the ignition switch. How does the ignition get power with only one wire coming from the magneto? I see no other way for the magneto to get power from the battery. For what its worth nothing else seems to work either. The lights will work if I run a hot wire to the back of the light switch but thats it, not when the battery is hooked up. Seems to me my whole panel is not getting power except for the starter button, it works fine. thanks

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Paul f

10-11-2005 05:24:50




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 17:17:48  
If yu have a magneto then the only wire to the dash panel is the one that grounds the magneto to stop tractor. (Think old time lawn mower that had the piece if tin metal you pushed up against the spark plug to shut off the motor)
There shouldn't be any current at the switch when tractor is not running.



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RShaips

10-11-2005 05:51:08




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 Re: Case SC no power to distributor wiring ? in reply to Paul f, 10-11-2005 05:24:50  
Ok thats good to know, How do I get spark to the spark plugs? What do I check, not familar with magneto setup. It looked like it was wired original! Thanks



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RShaips

10-12-2005 07:53:43




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-11-2005 05:51:08  
Now that I know how the magneto and switch work I do indeed have spark. Now my problem is I am not getting gas to the cylinders. I took the carb apart and the float wouldn't move enough to open the jet. There was a part of the float mount that was holding it in place, looked like it was made that way but wouldn't allow the jet to open. Anyway i bent it out of the way and I am still not getting gas up in the cylinders. I do have gas in the float bowl now. Any suggestions? Thanks

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SC Dan

10-10-2005 15:54:27




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
I have a 1949 SC. My ignition switch has two terminals and is wired as follows; one terminal is wired to the positive side of the coil, the other terminal is wired to the positive post of the battery. The negative side of the coil is wired to the distributor.

Dan



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RShaips

10-10-2005 15:16:01




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
Thanks for the diagram, I had already looked at them and they do not show where the distributor/magneto wire goes and where the wires connect behind the dash. thanks



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rgorange

10-10-2005 14:58:48




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
There is a wiring diagram at:
Link
Highlight the above
press CTRL C (to copy)
go to your browser address bar and
press CTRL V (to paste)
There is another one
Link
I got these by doing a search on this site.
LOL



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Ron LeVine

10-10-2005 09:23:26




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 Re: Case SC no power to distributor wiring ? in reply to RShaips, 10-10-2005 07:52:42  
Greetings,

I will probably work on my SC today so if I think about it, I will draw up a diagram of the wiring for you.

Ron



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