Nautilus chrono, how to remove exhinition caseback please

[rek001]

Hi guys, I have a loose rotor and a tiny metal ring with flanges floating around the movement of my Nautilus chrono.

Can anyone tell me how to remove the caseback please?

 

Darn rep factory assembly methods.  Thanks much.

[GenTLe]

Just unscrew it with a sticky ball

http://www.youtube.com/watch?v=XurACI4qIO8

or with one of these: 

[mule play]

See my post about the broken crown. You need to unscrew the 4 case screws, open the 2 part case, and then lift the movement with dial out. You will have to mount the movement in a holder or put it gently in a towel and rescrew the rotor. Careful not to bend the hands.