Originally posted by pun_18 . . . Anyway it wouldn't be difficult, would it?
Famous last words, Ralf!
Getting the mount and aperture ring off? No, that shouldn't be difficult. As for the surgery, I couldn't say...
I'm no lens expert, but I can give you some tips I've learned:
To remove the mount, I'd suggest you buy a set of J.I.S. (Japanese Industrial Standard) screwdrivers. They'll fit your screws better than a Phillips head driver. I found my set of J.I.S. drivers on ebay. I have sizes 000, 00, 0 and 1. They've been sufficient for the simple lens tasks I've tried. And I'd look for drivers with larger handles. They'll give you more leverage than the small handles most J.I.S. drivers seem to have.
Work in a clean, well lit space and put a light colored towel over your work area to help stop screws from rolling away. I've also read suggestions to work with lenses inside a large plastic container or bowl to keep the small pieces from disappearing.
As you lift the mount off, go slowly and pay attention to the arrangement of levers / linkages / springs so you'll know how to get it back together properly. And when you remove the aperture ring, watch carefully for the small ball bearing which gives the ring its click stops. It's easy to lose if it falls to the floor!
If you ever decide to disassemble a lens beyond the mount and aperture ring, I'd suggest taking careful notes as you go to help you remember what goes where. Taking photos as you work can also be a great help.
Good luck!
Last edited by .a.t.; 07-20-2017 at 12:14 AM.