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Ford Tractors Discussion Forum
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One Wire Alternator for 3 Cylinder Tractor

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CTPhil

07-29-2019 06:51:37




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I'm putting a one wire alternator on my 4100. I've ordered a pulley for it (it came with one for a 3/8" belt), and while I'm waiting would like to get a jump on getting a belt. The pulley is a smaller diameter than stock. I'm assuming I'll need a smaller belt. For those who have done it, how much smaller of a belt will I need?

Thanks.




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CTPhil

08-02-2019 13:32:31




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
I put the alternator on today, it took a little modifying but nothing major. I ended up with a 54" belt, the original is 55" plus.



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CTPhil

07-29-2019 11:16:35




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
Quoting Removed, click Modern View to see

With a one wire I don't have to figure out where all of the wires go or if the rectifier works, lol. But also I'm planning to ditch the instrument panel and go with a 3 gauge replacement that will include an ammeter.



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sunbeam

07-29-2019 10:26:56




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
If you have generator that drives the tach I like the unit sold on this site with tach drive.



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Ultradog MN

07-29-2019 09:45:26




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
Why go with a one wire?
It is sooo easy to go with a three wire on a 3 cyl tractor and then the original warning light still works.



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CTPhil

07-29-2019 07:08:54




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
OK, thanks, if it's that close I'll just wait and see if the old belt will work.



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Destroked 450

07-29-2019 07:06:52




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 Re: One Wire Alternator for 3 Cylinder Tractor in reply to CTPhil, 07-29-2019 06:51:37  
I took the pulley off the generator and had it bored to fit the Delco but most time there's enough adjustment to use the standard belt with a smaller pulley.

I prefer using the 3 wire Delco setup, simple install and retains the charge light on the dash.



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