Top agitator didn't agitate

Unplugged washer from 110 outlet.
Lifted up plastic lock down ring, to remove soap dispenser, pulled off soap dispenser.
Used a short plain screwdriver to remove plastic cap.
Used a 3/8 drive ratchet with an extension and a 7/16 socket to remove bolt. Lifted up and removed agitator. Sat agitator on a rag,as there Is a little grease.I put my feet on the bottom agitator and pulled up. Had to kind of pull and jerk as the top part of agitator came apart harder than expected.
The plastic thrust washer between agitators fell on the floor. I re-used It, but bought a new one at a later date.
I replaced broken plastic coggs and put back together.