8 3/4 axle removal question

I'm going to replace the seals, pack bearings, and new fluid in a new to me 8 3/4 that has sat for a LONG time. I've never done this before but I've done my homework.

My only question is, on the axle adjuster side, do I need to loosen it to take it off or put it back on? I know it needs to have a certain amount of play but if I don't move the adjuster, or put it back where it was should it still be set? Thanks in advance.