8-3/4 Pinion Nut Torque???

Well, here's the deal now. When I removed the drums, the shoes were half cooked, a bit shiny, and half gone. They were brand new when he installed the brakes with the diff. I fixed the Schhhhhh noise by releasing the ER Brake and adjusting the shoes all the way in. I backed up and hit the brakes in reverse about 4 times, until the pedal came back up. The Schhhhh noise was gone. Someone told me the ER brake cable gets tight when you go from 9" to 10" brakes. Which I did go from 9 to 10 inch brakes. Then, without a peep from the rear end or brakes or anything, I took it back to the shop that assembled the diff to get the drive shaft measured so I could buy a new one. The shop owner's friend had put the diff in.

When I got there the shop owner impacted the stock pinion nut off. His buddy put the stock one on because I didn't have the 1350 U-joint shaft to replace the stock drive shaft with a 1350 shaft. So the owner removed it with an impact because we needed to measure for the new 1350 shaft. He then impacted the 1350 pinion yoke on, measured it to be 49", which I doubt it is, then he impacted the 1350 yoke off, and impacted the stock yoke back on. The shop is 40 miles from my house. On the way home, the diff made a different noise, like a grinding, reminded me of when my wheel bearings on my bicycle had come out of the race and was like popping or grinding. It made this noise 5 times on the way home when no or little acceleration or deceleration was present.

I believe he was not supposed to impact the stock or the 1350 yoke on. There are torque specs for it, because you never know what an impact will torque a nut/bolt to.

What's the word?