I have one of these and I cannot get the cam off.
Allow me to go into detail as my digi cam is dead.
It is a half pintumble euro 5 pin nothing special, it has 3JH17 stamped ont he side if that helps.
Basically it has an cam that can be adjusted, there is a pin on the back that is spring loaded and needs to be lifted to remove the rear piece.
I have removed it once by lifting and applying preasure to the rear piece.
I adjusted it and now it doesn't but, the retaining pin moves up but the backing does not pop out.
I am sorry I am not 100% savy with euro cylinder lingo, if noone can see the problem, I can snap a picture tomarrow.
Thanks again guys.
Newbie21