'49 8N generator?

jbwest · Mar 13, 2017

I am working on my dad/granddad's old ford 8n. I got it running, but not i'm trying to replace the generator. Local guy says it's shot beyond repair, so I'm trying to find a replacement. I've already ordered (incorrectly, and now it needs to be returned) a single wire version of the 6V generator.

There are a couple other versions on the yesterdaystractors site. Please help me identify my generator so i don't order another incorrect one.

Thanks.

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Tim PloughNman Daley RIP · Mar 14, 2017

JB-
Your 'repair' shop guy is feeding you a line of BS. Unless completely melted down due to a fire or other disaster, these units can be rebuilt effectively -parts are available and he is just plain lazy, doesn't know how to repair a generator, just wants to sell you a new Cheena junk part, or all of the above. I have two original early 8Ngenerators, completely rebuilt, tweaked, and ready to use if interested in one -email me if so. I also have the correct, slightly used Voltage Regulator AND the tensioner arm you need for it. I will offer a deal too upon core exchange for the old unit.

Tim *PloughNman* Daley(MI)

Skip Burney · Mar 14, 2017

My thoughts exactly that generator can be rebuilt most likely new brushes and a coat of paint and it will be fine

jbwest · Mar 14, 2017

Tim, I sent you an email

Kiss4afrog · Mar 14, 2017

When you say "one wire" are you talking about replacing the generator with an Alternator Kit ??

Kiss4afrog · Mar 14, 2017

This might help: http://www.yesterdaystractors.com/articles/artint8.htm

And I agree that if you wanted to stay 6 volt there should be no problem with a shop being able to rebuild it for you. Might want to look up electrical rebuilders or call a couple automotive shops to see if they can direct you to their rebuilder. Some shops buy from NAPA, Autozone, ... but some deal with rebuilders directly.

I'm restoring a 1920's popcorn machine and I found a rebuilder to rewire the motor and I'm sure it's worse than what yours is inside.

jbwest · Mar 14, 2017

Apparently for the 8N, there are a few different generators that were made.
There are three listed on http://www.yesterdaystractors.com/Ford-8N-Tractor-Parts/Generator.html

The guy I spoke with on the phone said i had the 2 wire, but that model says it's for a 47-48 year. My tractor is a '49. It does look like mine, but appears to have an extra screw on the end.
http://www.yesterdaystractors.com/8N10000A_Generator-6-Volt_18711.htm

Just trying to figure out what the correct replacement would be.

Thanks.

Kiss4afrog · Mar 14, 2017

What is the part number of the one you ordered and what about it was incorrect for your setup ??

From the photos the one above looks to match the one in the first posting.

Before we get too crazy are you sure you can trust the diagnosis that the alternator is bad ?? Did you do any testing of it or the regulator ?? Usually on an older system like this it's more common to have the regulators fail. Especially if they are the mechanical type.

IMHO At $200 bucks I'd sure do some calling around to see what it would be to have it rebuilt. Plus a re-builder will likely be able to properly test it. Don't think any of the car parts stores of today have a clue on a generator. Hard enough to get them to hook up and spin a present day alternator.

Paul in MN · Mar 14, 2017

For my time and money, I'd just do a 12V conversion to an alternator with built in regulator. It is a lot less hassle than trying to make that generator and regulator work in a reliable manner.

I messed with my 8N gen and regulator for about 10 years, even having the gen rewound. I finally did the conversion about 30 years ago and it has been totally reliable.

Some of the guys want to be absolutely authentic in their repairs and restorations. All I want is a reliable tractor that starts every time and minimizes my repair time and subsequent frustration. The 12V alternator conversion has given me those results.

Paul in MN

Tim PloughNman Daley RIP · Mar 15, 2017

No, that's partly wrong. The early 8N generator is a 3-wire/3-brush unit. Later models went to teh2-wire/2brush style. Then there is the left side generator moved from the right side when they introduced the side mount distributor.

Early 8N Generator:

'49 8N generator?

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