As I am also needing to replace my water-pump. Is there a special tool(s) needed to isolate the bolts on the vibration-damper to loosen the central nut? Perhaps similar to the tool used to loosen the fan clutch bolt from the water pump? Any help, from anyone, who has experience with this job would be greatly appreciated... I know that recently, Phil M. posted a message regarding this..thanks to anyone/all for your help.