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Re: 39 ford N won't crank need help

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Author  [Modern View]

03-31-2013 08:54:03

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Most alternators are 12 volt negative ground unless it was custom.

The starter should still roll it over, but hooking the alternator up
Positive ground may fry it if it is 12 volt neg. ground.

Maybe just unhook it for now until you know for sure.

The starter won't care pos or neg ground, it will still spin.

The 9N should have a mechanical switch to connect the starter to the battery

when you push the thumb button. Many have been altered.

If it has that mechanical switch under the battery, you can jumper it to see

if it will roll over.
Be absolutely certain its in neutral and block the clutch down first!

The mechanical linkage that pushes the switch sometimes wears down and

won't push the switch far enough, or the switch may be bad.

They will sometimes act like this if the starter is stuck in the ring gear too.

Sometimes you can put the tractor in high gear and rock it by hand to get
it to pop loose, other times you have to take the starter loose or out.

Let us know what you find.

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03-31-2013 09:25:22

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 Re: 39 ford N won't crank need help in reply to Royse, 03-31-2013 08:54:03  
It does have the push button. I will jump wires and see if I can get it to crank. Thanks

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03-31-2013 09:52:37

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 Re: 39 ford N won't crank need help in reply to Tgkobal, 03-31-2013 09:25:22  
If it has an alternator and is + ground good chance the smoke has escaped from the alternator and will cause many problems like a dead battery. Unless it has an alternator made in England that is. Plus unless custom it would be 12 volts so an 8 volt battery would fry if the charging system works. I would start by pulling the alternator off and have it checked and then find a good 12 volt battery and hook the system up - ground

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03-31-2013 10:07:09

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 Re: 39 ford N won't crank need help in reply to old, 03-31-2013 09:52:37  
I spoke with the owner and he did have it modified to 8 volts some years ago. I will test the push button start switch and hope thats it. thanks.

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