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Allis Chalmers Discussion Forum
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12 Volt starter conversion, How did you do it?

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Author 
Hyperpack

11-17-2003 17:06:39




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I was browsing the board and came across a discussion about a WD with a Ford starter, It reminded me of a project I did a few years back. I would like to hear from anyone who has done a conversion and how it works and what parts are used.
About 15 years ago I did a 12 volt conversion on the D14 and kept the 6 Volt starter, A couple times a year the starter drive would jam and the mounting bolt would have to be loosened to get it to free up and about every other year the drive would bust and need to be replaced.The last straw was when the neighbor used it and ran out of gas and thought he should check the spark, He took out all the plugs and spun it with the starter till it threw the copper windings out of the armature and locked up the starter.
About 8 years ago after years of pondering how to reverse the rotation of a 12 volt starter for cheap it suddenly dawned on me how simple it was with parts I already had.Look at a Dodge gear reduction car starter from the seventies, The brushes are in the middle not on the back end like all other starters And being a single reduction gear that means the motor is running backwards to turn the drive the right direction.
I used an early sixties 12 volt autolight from an old Dodge (I think a Delco or Ford would work just as well I just happened to have the Autolight)I pressed the shaft out of the armature and made a new one a little longer and pressed it in so the brushes would be in the middle of the starter. I had to make a spacer to go between the motor and the original nose cone so the finished unit was about 1 1/4 longer.
I also added a follow through Bendix from a factory 12 Volt D15 starter that I removed the small pinion gear from and added the larger pinoin from the 6 Volt rig.
I put it on without painting it just to try it out 8 years ago and haven't had it off since,It has worked out very well.Back then I had lots of time and it was a fun project, It is an easy project if you have a lathe and a little time.Over winter I plan to make one to put on my Model D grader.
Hyperpack

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