I apologize, I think we're talking about 2 different things, here. I was referring to the clutch bell nut - and how to remove that. You are asking about the large nut on the clutch itself? I've removed that with an impact wrench, and putting both feet on the clutch, holding it on the floor so it doesn't spring apart when the large nut is loosened. To torque it back I just used the same impact wrench and held it in the same position, on the floor with one foot on either side of the large nut.