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Ford 9N, 2N & 8N Discussion Board

Re: 39 ford N won't crank need help


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Posted by Royse on March 31, 2013 at 08:54:03 from (69.36.49.151):

In Reply to: 39 ford N won't crank need help posted by Tgkobal on March 31, 2013 at 08:26:04:

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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