Not complete shaft
That whole part comes off, you need to take off the "rubber" (I don't know the english expresion lol ), check is there some kind of security, to keep it from not falling off, after that if it is free, give it a couple of hits with a hammer (but not directly with a hammer use a piece of wood or something in betwen) and it will come off...buy a new one, put the rubber back on with some "grease",then the new part... and that would be it..
