Not sure if anyone has a service man's handbook that calls out the proper procedure to set the main pinion shaft bearings of the newer style double taper roller bearings.

I am fixing a few things in my 6U trans with 2 speed reverse the doner trans I got was out of a 7U ht4 machine, this machine has the newer or as my 6u parts book calls it the field installation (group number 5h6054). I'd like to use this bearing carrier instead of the single ball bearing that was originally in my trans but just want to make sure the spacer between the outer races of the double taper rollers isn't like a crush spacer to set proper preload and if it is I'd like to have that proper procedure if there is one.   

That “5H293 Bearing Assem” is a matched set that comes with the center spacer already sized to provide proper preload when bought new, that’s what I learned when I put that upgrade into my 5U D2. Can’t guarantee that the old spacer would still give proper bearing preload if new bearings were purchased separately and used with it, but depending on price and availability from Cat might be worth a shot as long as you can test the setup after putting it together. I just bought the whole new assembly from Cat when I did mine.

Just checked with Cat parts store, I am afraid that they are no longer available. 

This was the same issue I had when I rebuilt my 7u transmission as Sasquatch they are a matched set, I was lucky that the bearing service I used managed to find only one I the US (I'm in Gods country Australia) otherwise it would of had tobe made. It cost me over $700 for it. Even the individual bearings are near impossible to find.

 

Good luck on your hunt
 

There was a similar bearing set with a precision ground spacer in the middle of it that I recall dealing with in the transmission of my 17A D7 (I recall there was a thickness measurement hand-scribed onto the spacer). If you can find a trade number on the bearing(s) and/or spacer, and scour the internet, you would be surprised what you can come up with. In my case I was able to find a part number for the set in an older Timken catalog somewhere online, and inquired with motion industries on obtaining one. Timken would make one if I wanted it, but the manufacturing lead time was something ridiculous like 3 months and I was able to get the individual tapered roller bearings right away and successfully rolled the dice with reusing the spacer because we needed the machine back in the field and couldn’t wait. And that was pre-COVID times when lead times weren’t as bad as they are now. I’ll admit it can be nerve wracking, but if you can’t find it through any other channels, and you can get a trade number off an existing bearing set, you can at least call it a very educated guess. In any event, good luck!

www.acmoc.org/bb/discussion-d72/9389-d4-...eld-changeover#70521

Hi All,
I found the Timken part numbers for the bearings but the spacer has tobe specialy made

5H0239 Cup 29620 2 required
5H0239 Cone 29670
5H0239 Cone 29665
Spacer specialy made

Regards

Thanks for all the input guys I'll do a little bit more looking. I do have the old timken part numbers on the bearings and I did see a few numbers scribed into the spacer, I'll get in touch with my bearing supplier and see what he has to say about it all.

Spacer is just ground to parallelism and height - a machine shop can do this - think the size can be calculated.