[AT] 12-volt conversion

[Roy Morgan]

On Dec 5, 2008, at 9:41 PM, Dick Day wrote:

> Can anyone give me (for a buddy) some pointers on doing a 6 to 12-volt
> conversion on a '43 JD, electric-start B?

Dick,

About all I know is that some 12 volt conversions meant cutting the  
engine cover to fit the newer, bugger alternator in.  This is what  
happened to my '51 IHC McCormick W-4.  It is possible to get foreign  
car alternators of smaller size, and maybe make a special bracket to  
mount them, where there is only a small amount of room.

On my tractor, the sheet metal was slit and bent out of the way to  
make room for the 12 volt alternator.  One day I'll want to re-convert  
that and get the sheet metal welded and so on.

So look into this aspect before you get a new alternator for your  
tractor.

Oh: you may have to replace any headlight lamps, or other lamps, the  
separate voltage regulator if it is separate, starter solenoid if  
there is one, and maybe the starter.  The 6 volt starter may hold up  
under 12 volts, but do get advice from folks who know.

I look forward to posts from folks who are not guessing like I am.

Roy

Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073