M tranny and diff questions

I am currently working on a 1949 M that i have. The pilot bearing on the trans main shaft went bad.

In the process of fixing this ive ran into alot of other problems, my biggest being the bearing cage for the bull pinion shaft is quite worn and the bearing is very sloppy in the cage.

This is my question, i have found a M near me for sale that has been partly scrapped out but the rear end is all intact. But it has a serial number 17,xxx which makes it a 1940. Looking at case parts online there seems to be some differences in parts between the earlys and later ones. Anybody have an idea how many parts would interchange? I also have a 42 M with a clunk in the rear end (presumed bad bullgear) that i plan to fix this winter and thought this scrapped one would be good for getting parts for both.

Thanks
 
Think on a 17,000 tractor most stuff will work. If you need the differential and bull gear housing it works in the 49. Bull pinions and brake drums are different. Early is keyed and the 49 is splined.
 
You mean the pilot bearing that's in the Flywheel, if that's slopped out that's a job a machine shop. As far as the other problems, you should have a TC-28H manual, that's the M and MD Parts catalog. And if it was mine i would put the roller bearings in instead, of the ball bearings.
 

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