Getting an 8n started

[poorhunter]

It has been a long time since I"ve looked at an 8n. I have a friend (newbie) with an 8n we are trying to get started after it has sat for almost 3 years. He got a new battery, but I"m not sure how to tell if this one has a 12v conversion or not. I assume since it has an alternator, then it is a 12v not 6v correct? Also, it will always be positive ground no matter what correct? The red battery cable goes to the starter, which has me confused. I"m sure to have more questions, and look forward to everyone"s help, thanks.

 

[Ultradog MN]

So you got that 5000 running and now you're on to the next tractor huh?
I watched your progress but rarely replied as I couldn't be of much help.
About 99% of the time an alternator will be 12V and Negative ground.
So red battery cable to the starter will be correct.

This is your typical alternator.

This is a typical 8N generator.

 

[Bruce (VA)]

While there is such a thing as a positive ground alternator, (I've got one in my 29 Ford) chances are as UD said it's negative ground.

But do not determine polarity by looking at the color of the battery cable! Make sure that the cable is attached to the positive battery post.

Pass on the info in tip # 39 to your friend; life will be easier w/ a set of manuals.
75 Tips

 

[poorhunter]

Yep, my 5000 is up and running great...at least so far! I have put it through a good workout too, so alls good.

Thanks for that info too on this 8n...although now I think it's a 2n. It has reverse and 3 forward gears. Didn't the 8n have 4? I'll take some pictures next time i go over.

 

[Royse]

You remember correctly, 8N had four forward speeds.
It also had both brake pedals on the right. 9N/2N
had one brake pedal on each side.
Rear hubs are different too. 8N looks like the first picture
with the small bolt pattern, 9N/2N the second picture.
Serial number should tell you if its a 9N or 2N.
They both start with "9N" but the whole number will tell
you which it is. Assuming the engine wasn't swapped.

 

[poorhunter]

Hmmm, as I recall from looking at his tractir
yesterday, it had two pedals on the right and
only 3 forwards. I'll have to look more closely
when Im there next, specifically the serial #.

 

[poorhunter]

Hmmm, as I recall from looking at his tractir
yesterday, it had two pedals on the right and
only 3 forwards. I'll have to look more closely
when Im there next, specifically the serial #.