Well guys, I'm about to make my first engine repair. I'm replacing the piston on my moby. In the manual it says to rotate the crankshaft until the piston is at TDC. Do I need to remove one of the crankcase halves to do this ? Also, it says to pour boiling water on the piston to remove the gudgeon pin. Do I simply pour a pot of water on the piston or can I remove the pin without doing this ? One last thing is how can I support the piston during removal, because the book says this is very important but doesn't really explain. Thanks!