Originally Posted by
pratt61799
How do those chuck wedges work? Insert around opposite sides of the BB taper between the BB shell and the crankarm, and then... pry? wedges in towards each other with a hammer?
Generally, they are fairly thin, so you need to take up some of the space between the
crank and the BB cup that you are pushing against with something......i usually end up
using the open end of a combination box/open end wrench of the appropriate thickness
for the situation. From there, as you have deduced, one from each side and tap them
toward each other using a small hammer.
Some sort of penetrating oil, like PB Blaster (as seen on TV !!) applied to the interface
of crank and spindle from both sides (front and back) also helps usually.