There is an three allen head set screw in the center, take them out. then ther is an extra hole the one that did not have a set screw in it. take one of the set screws and screw it into that hole. It will push the two parts of the taper lock apart. If it has not been removed you may have to take a punch and a hammer and tap on the gold (outer) portion, pushing it toward the frame of the hawk.