Nikkor 50mm 1.8 rocking lens

Hi all. Anyone done an overhaul on a Nikkor 50mm 1.8 (E?) Mine's developed a wobbly lens assembly so I'd like a bit of advise on how to get inside; looks a little more complicated than my Jupiter 8 All the best.
B.

you mean the thing that extends when you focus is wobbling? that happened with my perntax super takumar 55mm after i dropped it. i used my fingers for friction and i unscrewed the ring that says takumar 55mm 1.8, and it went off the filter threads, it seens some screws have become loose in there , so i tightened them
hope this helps!