This old truck rear end pumpkin is in a very low production machine shop ***embled tractor from the late 1930's. I'm sure it was a common truck rear end pumpkin at the time. Can anybody give me some pointers as to the maker? I really have to get a diagram or service instructions on setting up the pinion bearings. I really would perfer not to learn how by tearing it apart.
no idea, it looks pretty big. http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0420.htm might be a start, but don't count it it all being exactly the same.
It would be out of a one Ton truck....Hook up with a local steam or tractor club some one there would have an idea.
Timken Driving Axles is one I found with square tubes in the single reduction listing. Conversation me an e mail address I can send pics from motors truck repair, 16th edition. There is like couple hundred models.
I think you may be overthinking it! It is a low speed tractor rear end and you are asking for pinion pre-load. If it is a shim adjustment set it up till no play and remove around .002. If it is the jamb nut style, tighten until no play, then a tad more! Over the years I have seen pinions that were “ loose” I mean you could actually feel play in the bearings with your hand in trucks and cars, and still functioning! It is best to set up proper, but it is amazing how far off it can be and still function just fine…..especially on a low speed tractor rear end! Just my opinion.
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