8 3/4 742 Center Section Rebuilding

Well I finally got the yoke off!

First I tried with my 50 year old 1/2 inch Craftsman breaker bar and two 24" cheater bars. When I saw the end of the breaker bar spread I decided to stop.

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I got a 3/4 drive breaker bar and socket and with the two cheater bars, the nut came loose no problem. The yoke came off with no additional effort, no need for a puller.

Amazing what happens when you use the right tools for the job

Assuming the old pinion and the new pinion have dimension for depth is it safe to do the math with the old shims total thickness to determine the new shim thickness to use?

I plan on honing the old bearing to allow it to slip on and off for setup but wondered if you can trust the markings