8 3/4 Thrust Block

Ack. I had a browser meltdown. Yes, Cass is an excellent source for information.

The thrust block is two pieces that push in from each side, and meet in the middle of the carrier. They can slide back and forth in the center. As you tighten the bearing on one side, it pushes against the block, which slides against the other axle shaft, which will tighten the bearing on the other side.