[nylart]

I am in the process (and believe me its been a process) of changing the front shocks on my 84 911. Things have been going more or less OK but now I am at the point of removing the old shock and cannot loosen the "castellated" nut at the bottom (its about 2 inches in diameter and has 4 "castles").

Is there a special tool for this? If anyone has some tips on how to remove it I'd appreciate them immensely. (even tried a pipe wrench but not enough of the nut sticks out to get a good bite.)

TIA,

Art