So, here's my problem in pictures. The Quattro with end cover on, and what it looks like with the cover off:



Close-up of the end, showing what looks like the bearing. On regular beaters the bearing is held in by a retaining nut - and falls out easily when the nut is removed. Barring brute force and pointy bits of steel, not sure how I am supposed to get this out. Also, how is the spindle held in place without some kind of nut? There is no hex traction if you put a small enough hex in the central hole here.



Finally, this is the other end of the pedal: standard 8mm hex fitting to the pedal as per Eggbeater SLs.



If anyone has a set of instructions for their Quattros and can give it a glance to help me out, it would be greatly appreciated...