I have been unsuccessful in obtaining an off the shelf replacement. I could get it re-manufactured or possibly I could repair, but this maybe difficult as it is aluminium or MAZAC. Does anybody have a suitable replacement or know where I could get one?
Also, the crown wheel has seized (this machine has been in storage for many years). It appears to have expanded and is pressing against the cast iron frame. It is not possible to get a feeler gauge blade between the wheel and casting in some locations. To avoid putting the wheel under any stress, I propose to drill out the wheel boss to allow it to be removed. I will then turn up a new boss and shaft. Has anybody else had this experience? Please see the attached image.