cheesehead2

New User
Anyone have any informatin on just the replacment number/info on alternator for the te20? Mine is no good and need to replace but can find no
numbers/info on it. 5/8 inch pulley

Thanks
 
There are a number of us here that could venture a fair guess if you would post a photo.
 

An alternator would be a retrofit , original tractors had a generator . Any two wire alternator that fits will do as long as the tractor is wired negative earth . The pulley is the only snag , use the one from yours and transfer to the new alternator , or try to find one with a two piece pulley and space it to fit the wide r tractor fan belt .
 
Good chance it is a Delco 10 SI, but that is just an assumption.

If it is, that is the most common, economical, and widely used alternator.

The wide pulley can be removed from the old one and reused. An impact wrench will zap it off and on easily.

Shopping for one online will get the best price.

Note the terminals where the wire harness attaches. If the spades are inline, it is an internally regulated alternator. That's the one you want. If the spades are parallel, it is an older externally regulated model and needs an external regulator. Not desirable.

There is also a 'one wire' version, it has a different regulator and only requires the one main charge wire. Commonly available at slightly higher cost.

And if you want to keep the tractormeter working, you can even find them with a tach drive on the back!
Delco 10 SI
 
I have a TE20, 12V negative ground. I use a Delco 10Si.

https://www.amazon.com/Alternator-Replaces-Install-Cadillac-Oldsmobile/dp/B00SFZTLYS
 
I'll throw in 2 cents.
Your tractor is a TE.
That would be Tractor England and I believe they ran a Lucas brand electrical system so you might be looking for a Lucas Generator.
However you said Alternator and I don't believe alternators were available in that era of tractor.
So if your still running the Generator, then you should possibly be looking for a Lucas unit.
If your now running the alternator, it could be a vast majority of options, the GM 10si being the most common.
The least expensive option for that unit, I believe, is on a 1979 Chevy Malibu, possibly Caprice.
That unit delivers about 40 amps and is more than enough to run your tractor, if your running the GM 10si alternator.
How many wires are going to it? 1, 2, 3, more?
 

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