I have this wonderful old Raleigh bike I pulled out of a skip a couple of years ago. Now I am trying to open the Sturmey Archer ball case of the hub, and not being very knowledgeable about bikes (yet), I was wondering if you could help me out.
The particular question would be, in order to open the ball case do I have to open the circular ring with the circular recesses and the engraved text (A) or the inner ring with the indents (B). There is an arrow indicating the direction but I am not sure to what element it refers. I have tried gently to tap both with a hammer and screw driver, but so far nothing has moved. Please see the attached image. Any ideas what the correct procedure might be?