I removed the control panel torx screws,front panel (putty knife) & the top panel (nut driver).
Used two straps to remove the agitator with a sharp yank. Removed the agitator drive hub with a small adjustable wrench.
The hub nut used to be 1-11/16" but was under-sized from the last hub replacement. I didn't know not to reuse the old nut then. It quickly rounded off.
I started to drill out the nut before I realized that the hub is what was holding the ball shaped bottom of the nut. After drilling the edge of the hub, I could hammer it back relieving the pressure on the nut.
I used a wire brush in a drill to clean the threads so the new nut would go on.
I painted the new hub with POR15 in hope that it would last longer'
The original hub lasted about 15 years (machine purchased 1996) & was replaced under GE's 19 year warranty. The replacement didn't do as well.