Here the photo shows the old bearing still in the hub with the new bearings on top and the wheel spacer that I took out from the other side. Its a pretty easy process to change bearings. This model hub has a cir clip that holds a bearing in on one side while the other one fits very tightly. After removing the dust seal and the cir clip the bearing on that side lifts right out then the spacer and the other bearing can then be popped out with a long socket extension and hammer.
I first put the bearing in that needed pressed into place, a 32mm socket fit perfectly into the hub allowing me to tap the bearing in only putting pressure on the outer edges of the bearing. There is a lip on the inside of the hub that the bearing seats against so you know when it is fully in place. After that the dust seal can be put in by hand. These are sealed bearings so no extra grease is needed.
Flip the wheel over and slide the spacer into the hub, then the next bearing can be set into place. No hammer needed on this one.