I have the tool. After removing the main pulley you slide this dude up on the shaft and it has a nice carter pin that shoves into a couple holes in the tool. The carter pin goes into a grove cut into the transmission shaft. The tool features a threaded shaft and a nut along with a few washers. After securing the rig to the shaft, you tighten the nut, and that causes the spring to get compressed inside the brake package. You know you are far enough when the whole shebang turns freely. You then remove the screws and back slowly off the shaft till the bottom plate and the spring comes off.