Use bolts in the slots and in the ears of the yoke as shown.
The center part is just a jacking screw to then remove the yoke from the shaft if necessary.

You'll use a breaker bar, ratchet, or torque wrench as necessary with a correctly fitting socket.
Second breaker bar on the holder tool to keep it and the pinion from turning.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-