I have reused the original hubs from my 2011 Specialized Enduro Comp as rebuilt wheels with SixPack Racing spokes (double butted, 2-1.8-2mm) and Stans Flow Mk3 rims.
I thought that the bearings could be smoother and decided to take apart the hubs and check what kind of bearings they have.
Rear 135mm QR hub
After the non-drive side (NDS) end cap was removed, I hit the axle from NDS side with a plastic mallet to loosen the drive side (DS) bearing.
After the DS bearing was removed, I hammered the axle from that side to remove NDS bearing and pull the axle away from NDS.
Now I had the bearings and the whole axle-assembly removed. (The freewheel seemed fine and I didn’t yet have all the necessary tools to take it apart)
I then re-greased the bearings and then for re-assembly, I first used some socket (can’t remember which one, maybe the same as NDS or maybe a 20mm) to insert the DS bearing, then insert the axle from NDS and after the axle is in, I used a spark plug socket to seat the NDS bearing.
Front 20×110 hub
I also wanted to check what bearings are used in front, so I used ParkTool AV-5 jaws to hold the end cap in a vise and the pulled from the rim to remove the end cap.
I then re-did the same process on the other side and both bearings are 6804-2RS. I didn’t remove them as I didn’t have a bearing puller and they were rotating quite well.