normal thread (rh) so ccw. Nut under insert on the wind lever top is LH = cw. Set B asa 100 for disassembly. Note the position of the tab on the asa resistor -- maybe even mark it w/a pen. Makes reassembly easier. At B, the plastic tip of the shutter dial brush should point to the back of the camera. You also have to unsolder the gray sync wire from its terminal on the bd. Its easier than from the hot shoe contact. A 20w or so penciliron will do the job. Lift the cover slowly so you see where the wire goes. You don't want to tear it off.

Thanks for the tip Don. However, it is not clear which lever to activate. I have tried the release lever in the Winder attachment socket (pushing the lever marked A in the picture in the link below to the right) with no result. This was also the lever I tried in vain before removing the bottom plate. I have marked the other identifable levers with letters, in case you can lead me any further.
 
Thanks for the help so far!
 
http://www.kikidu.com/pix/SuperA_Bottom.jpg