>>1233742You need to take the current bottom bracket off since the Centaur cranks need the external BB cups in the frame. Here's a video about the install:
https://www.youtube.com/watch?v=Kxvaclp0wtEYou can operate the tools either with a big adjustable wrench or then get a huge (the tools are usually 24mm) socket and use that with a lug wrench for car wheels, gives good leverage.
