Converting 6 volt to 12 volt 1956 JD C40
Converting 6 volt to 12 volt 1956 JD C40
Could someone please tell me what alternator will work well with this type of conversion and how should I wire it. I have installed an alternator from a 1976 Chevy pickup, I upgraded the coil and replaced the new battery to 12 volt. I don’t think it was wire correctly and may have fried the alternator. Any help will be most appreciated. Thanks
DWB
- Stan Disbrow
- 350 crawler
- Posts: 2904
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
Hi,
Most use a 1-wire alternator. Meaning the regulator and cut-out is internal. So, all you need do is hook one wire from the alt to the batt. Like the little Denso units used on so many cars these days.
Stan
Most use a 1-wire alternator. Meaning the regulator and cut-out is internal. So, all you need do is hook one wire from the alt to the batt. Like the little Denso units used on so many cars these days.
Stan
There's No Such Thing As A Cheap Crawler!
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
- Stan Disbrow
- 350 crawler
- Posts: 2904
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
JD 1956 C40 6 to 12 volt conversion
Thanks Stan I’ll look for the single wire alternator and Ill upgrade the coil. Thanks again, Don
DWB
- Stan Disbrow
- 350 crawler
- Posts: 2904
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
Hi,
On the coil, you can get a 12v one, or add a resistor to the 6v one.
I am in the same boat now. My starter armature fried. So, I took it to a local shop, and they rebuilt it as a 12v. I don't feel like doing a full conversion, so I have a 12v battery on the starter and a 6v motorcycle battery on the rest. For now, anyway. When it warms up I will be more inclined to switch the rest over. Maybe.
Stan
On the coil, you can get a 12v one, or add a resistor to the 6v one.
I am in the same boat now. My starter armature fried. So, I took it to a local shop, and they rebuilt it as a 12v. I don't feel like doing a full conversion, so I have a 12v battery on the starter and a 6v motorcycle battery on the rest. For now, anyway. When it warms up I will be more inclined to switch the rest over. Maybe.
Stan
There's No Such Thing As A Cheap Crawler!
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
- Stan Disbrow
- 350 crawler
- Posts: 2904
- Joined: Fri Jul 15, 2005 3:13 pm
- Location: Raleigh, NC
Hi,
So true. Although these days most off the shelf coils are 12v and it more likely you would get the wrong one if you went looking for a 6v one.
This is why I have the wrong armature in my rebuilt starter. But it is a good time for me to make the change anyway. It is just I wanted it runnable in case of snow (I have seen a foot here in NC a few times) but didn't really want to do all of the necessary work in the cold. So, a temporary two battery solution.
Stan
So true. Although these days most off the shelf coils are 12v and it more likely you would get the wrong one if you went looking for a 6v one.
This is why I have the wrong armature in my rebuilt starter. But it is a good time for me to make the change anyway. It is just I wanted it runnable in case of snow (I have seen a foot here in NC a few times) but didn't really want to do all of the necessary work in the cold. So, a temporary two battery solution.
Stan
There's No Such Thing As A Cheap Crawler!
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)
I didn't see any mention of switching to negative ground, but I might have missed it.
The O.P. said, "I don’t think it was wire correctly and may have fried the alternator."
Positive ground is tough on most alternators. I'll bet he has it at negative ground, but just saying in case he doesn't.
The O.P. said, "I don’t think it was wire correctly and may have fried the alternator."
Positive ground is tough on most alternators. I'll bet he has it at negative ground, but just saying in case he doesn't.
420C, 5 roller, 62 blade
If you have the ability to rebuilt your present alternator, Jegs sells a rebuild kit for the 10SI alternator.
http://www.jegs.com/p/JEGS-Performance- ... 4/10002/-1
I have done quite a few of them with this kit over the years.
Dan.
http://www.jegs.com/p/JEGS-Performance- ... 4/10002/-1
I have done quite a few of them with this kit over the years.
Dan.
1956 420C with GSC blade
Tools are to men as shoes are to women , you can never have too many !!
Used diesel engines are an adventure any way you look at them !!
Tools are to men as shoes are to women , you can never have too many !!
Used diesel engines are an adventure any way you look at them !!
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