Dismantling rear suspension dampers.

[Tractorman]

The seal 'blew' out the rear spring damper the other day and oil spewed out. I have removed the spring but cannot strip the ram, it's an Italian (Casa?) unit. I cannot see how the endcap comes off, tried unscrewing but I would expect there to be some kind of tool holes in the cap if it unscrewed. Anyone had one to bits or are the unserviceable?