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Ford 9N, 2N & 8N Discussion Forum
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9-N starting system

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t.l.

09-08-2003 09:55:09




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Brought tractor home to paint and change oils....It would not start..this is a 12 volt system..battery feeds solenoid to starter..small post goes to push button to complete ground..nothing happens.pulled solenoid it's 6 volt...I bought a 12 volt solenoid will this hurt the starter? Didn't want to burn any thing up. Don't know but I bet it's a 6 v. starter. Also I have 12.8 volts at he coil there is a resistor power goes through before coil..I was told that's right when it starts the resistor will cut the volts down..is that correct?

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SteveB(wi)

09-08-2003 14:06:16




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 Re: 9-N starting system in reply to t.l., 09-08-2003 09:55:09  
A 9N doesn't use a solenoid in the original configuration. It has a small starter switch on the back side of the steering gear. The starter button is purely mechanical pushing a rod activating this switch. this switch I don't believe is 6V or 12V related. Now if your 12V conversion in fact makes use of a starter solenoid I would jump the battery terminals of the solenoid and see if the starter spins. My tool of choice to jump is a medium channel locks. If it uses a solenoid and need a new one I would buy the 12V as this is what you are running. The big terminals of the solenoid won't care about voltage but the small one probably will. To answer your question No the voltage of the solenoid won't hurt the starter. On the coil issue the question will be is it a 12V or 6V coil. If it is a 6V coil there should be 2 resistors. One to drop 12-6 and the original ballast resistor to drop 6V to a lower coil saving voltage. I believe a 12V coil will still need the original ballast resistor but not the dropping resistor.

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Johnny

09-08-2003 11:46:59




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 Re: 9-N starting system in reply to t.l., 09-08-2003 09:55:09  
Are you saying the starter doesn't turn over? If so, are you sure you are in neutral and the starter button is working right? I would try jumping straight to the starter (make sure you are in neutral and PTO is off) just to make sure the problem is with the starter & not the starter button.



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souNdguy

09-08-2003 11:37:12




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 Re: 9-N starting system in reply to t.l., 09-08-2003 09:55:09  
Ok, so you are 12v neg grnd, and use an alternator. You have the oem 6v starter, and an oem 6v solenoid.. and/or a 12v replacement solenoid.

The original oem 6v solenoid was internall hot, and used the small post as you described to a push button switch.. though that was on the 8n.. I don't believe the 9n/2n had a solenoid at all.

In any case.. if you have a new solenoid, read the directions.. it may want power to actuate.. instead of ground to actuate.... Might be an isolated one if it is 4 posts.. etc.

Play around with it on your bench with a batt and some test wires.. shouldn't take long to figure out what needs what.


Soundguy
Soundguy

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ron

09-08-2003 10:09:16




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 Re: 9-N starting system in reply to t.l., 09-08-2003 09:55:09  
Believe it or not 6 volt solenoid is sturdier than 12 volt. stick with 6 v solenoid. 6 v starter will work fine with 12 v but don't crank for long periods or it will fry. Don't understand "small post goes to push button to complete ground.."



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