TO THE OP
Let us see.
You give zero information about your coach so we have no idea if it a ford or chevy chassis or another make. No year absolutely no info at all and you want us to tell you how to get at the bearings.
You need to find a good independent repair shop and let them do it.
I would never take my rig to an RV place for this maintenance independent truck mechanic is what has worked for me.
Camping World only if there was no place else in the area that I could get to