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Bull Gear Doesn't Fit

restore final drive bull gear assembly splines

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#1 farmall.dude



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Posted December 10 2018 - 02:44 PM

I'm going to give this group a shot. It doesn't look like it's very active though. 


I'm in the middle of a restoration of my A. I broke a bolt off in the rear axle, hub to axle. Tried to get it out, tried to drill it out, no luck. Ebay to the rescue. I got a replacement. The problem is, the final drive Bull Gear's splines don't match up with the axle splines. There are 2 possible scenarios I can speculate happened. 1) the axle I got isn't from an A. It looks exactly the same though. 2) There are 2 (or more) iterations of the axle/gear combination. That is, possibly an older axle won't fit a newer gear. I can't find any information on the later however. The parts manual doesn't indicate anything about model years being different for the A, only B and BN (and AV too). Before I attempt to replace the axle, and possibly end up in the same boat, I wonder if anyone here knows anything about this. 

#2 Dave NM

Dave NM


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Posted February 14 2019 - 11:28 AM

I too, am working on  a  Farmall A partial restoration.  I have a "parts A", 1940, with both axels intact. If you still have a need, I could take  photos and post them.

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