Determining if my starter is 6V or 12V

csulaguy · May 23, 2016

How do I find out if my starter is 6V or 12V? My tractor was converted to 12V operation when I got it. Long story short, the original 1941 9N block had serious problems, so I bought a good condition 1949 8N block and a friend helped me reassemble it this past weekend. We tried to get it to turn over (without actually cranking, as that stuff isn't hooked up yet), and the starter was arcing and shorting several times. I'm wondering if it's the original starter and this was just never changed out, or if the starter just has an internal short and it's time for a new one. Darn near everything else related to the engine is new at this point, anyways.

Royse · May 23, 2016

A 6V starter will work on 12V just fine because you don't have
to crank the engine long enough to overheat the starter.
If yours is arcing and sparking internally, there's a problem with
the starter. If it is original I'd have it rebuilt. Better quality than
the off-shore replacements.

How were you trying to roll it over and where were the arcs?

csulaguy · May 23, 2016

(quoted from post at 18:59:40 05/23/16) A 6V starter will work on 12V just fine because you don't have
to crank the engine long enough to overheat the starter.
If yours is arcing and sparking internally, there's a problem with
the starter. If it is original I'd have it rebuilt. Better quality than
the off-shore replacements.

How were you trying to roll it over and where were the arcs?

Click to expand...

My friend used both the 12V battery and also a battery jumpstarter from Matco that he keeps in his tool chest. It was arcing at hot, on the top. No problems with ground. At one point, he fused the clips to the hot terminal.

Royse · May 23, 2016

I have mine rebuilt at the local starter/generator/alternator shop.
You probably have one around but I don't know your location.
I don't do it for originality but for quality of the parts.

If it was arcing at the stud on the top, not inside, that could be
simply a bad connection. Will the engine roll over by hand?
You could use a hand crank, or put it in high gear and rock the
rear tires until the fan blade turns, take the starter out and use
a pry bar/big screw driver on the flywheel teeth or just pull all
the plugs and try it from the fan blade with a good tight belt.
Something may have gotten bound up when you put the engine in.

csulaguy · May 23, 2016

It actually did seem to arc on the inside now that I think about it, but it was primarily from the top.

I'm about 70-75 miles northeast of San Antonio. I highly doubt there are any alternator shops nearby. When my radiator was leaking, I bought a replacement from YT, as we don't have any radiator shops within a 35 mile radius (and the busted radiator wasn't original, anyways).

Ken N Tx · May 24, 2016

I bought one from Amazon (DB Electrical) and was free shipping right to my door in 2 days..$100....

http://www.amazon.com/Electrical-8N...1464086120&sr=8-2&keywords=8N+starter

csulaguy · May 24, 2016

(quoted from post at 03:52:22 05/24/16) I bought one from Amazon (DB Electrical) and was free shipping right to my door in 2 days..$100....

http://www.amazon.com/Electrical-8N...1464086120&sr=8-2&keywords=8N+starter

The reviews on amazon for that starter have me a little worried. The bad reviews, anyways. I might order one from YT, although I'm almost tempted to try another vendor. Last time I ordered parts, the gal I spoke with (Shannon I believe) told me if I had specific questions on parts, I should probably be buying from my local New Holland dealer instead. I was disappointed after blowing thousands on rebuilding this tractor.

Ken N Tx · May 25, 2016

(quoted from post at 14:14:17 05/24/16)

(quoted from post at 03:52:22 05/24/16) I bought one from Amazon (DB Electrical) and was free shipping right to my door in 2 days..$100....

http://www.amazon.com/Electrical-8N...1464086120&sr=8-2&keywords=8N+starter

Click to expand...

The reviews on amazon for that starter have me a little worried. The bad reviews, anyways. I might order one from YT, although I'm almost tempted to try another vendor. Last time I ordered parts, the gal I spoke with (Shannon I believe) told me if I had specific questions on parts, I should probably be buying from my local New Holland dealer instead. I was disappointed after blowing thousands on rebuilding this tractor.

All I can do is pass on my experience..I would rate them 5 star..

dactura · May 27, 2016

I "re-built" mine about 5 years ago. I had no idea what was inside or how to do it - but if things got hairy, I figured I could just buy a new one. All it needed was new brushes and to sand down the commutator. It was a fun project. I cleaned and re-painted all the parts. It worked for about 4 years and then the bendix went out. I replaced that with much fear and gnashing of teeth... but the elation of pressing the starter and discovering it all works could not be purchased with money.

So, you might consider taking it out and attempting your own overhaul. If you know how to use a socket set and screwdriver, you can do this job.

Determining if my starter is 6V or 12V

csulaguy

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Ken N Tx

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