How to press on right rear axle bearing w Hydraulic press

I’ve never done this before and I’m still trying to get my head around the fact that the bearing cup is floating on the axle instead of being attached to the rest of the bearing. That said...I think I understand how the adjuster can be used to reduce the gap beside the cup. I’ll need to go back to the manual to see how the end play is measured and if I have access to what’s needed to measure this. The suggestion to leave the left rear bearing alone is tempting since I have no evidence that there’s any problem on that side. I’ll give that some thought.