Farmall 140: Originally 12v?

[Punkfarmer]

I have a Farmall 140, serial number 1129 J. Someone changed the original generator and voltage regulator out for an alternator. I'm having trouble with the alternator, and I don't like the way it sets out in the weather with no guard around the front pulley/fan, (I can see someone accidentally sticking a finger into it), so I'm thinking about going back to the original. Was this tractor originally a 6 volt system. What do you guys recommend?
Thanks

 

[Soundguy]

according to my list that's a 58 model, and was likely 6v. many models went to 12v in 66.

soundguy

 

[Punkfarmer]

Thanks Soundguy,
I couldn't figure out what year it was. It seemed old enough to be 6v; however, the lights and the rest of the wiring look original. The only thing that doesn't look original is the alternator. What do you think about changing back to original?

 

[Soundguy]

it would have had a 12v genny back then.

you call on the change out.

I have oem 6v machines with 6v gennies.. oem 12v machines with 12v gennies.. oem 6v machines that are now 12v using a 12v genny as a 'stealth' conversion, and oem 6v machines on 12v using a gm alternator.. and um.. I guess some oem 12v'ers using old style motorola as original supplied euipment alternators.

soundguy

 

[jfay]

Very few guys go back to 6V generators. Alternators are much better and 12V is better than 6v. There is a reason they don't make them 6v anymore.
Build a guard around the alternator if you want. I went to12V on mine 20 years ago and have never had a problem with fingers getting caught.

 

[Soundguy]

they don't build em 6v anymore due tot he amount of copper needed.

need lotsa amps to make watts on 6v = big copper = big$$

 

[Punkfarmer]

Soundguy,
If I'm reading you right I should be able to bolt on a 12v genny and it will work fine and look original. I like that Idea. I'm not a absolute stickler for original, but this tractor is in real good shape and about the only thing that isn't oem is the alternator.

 

[Soundguy]

bolt on the genny, AND get the reg for it.. brackets.. etc.

presumably someone modified or tossed the oem genny brackets when they hung that aluminum thing on there..


soudnguy