Removing Look Brakes???

It's probably really easy and obvious but i didnt want to break anything. How do I take the brake off my look pivots to swap it out with another one?

take of the heelpiece, grab the brake part,slide a ´bit´sideways and yank.
new or very old brakes can be a bit tuff...

unless you have very old looks where they are almost bolted to the heelpiece.
(zr?)

Thanks man, Got it.