If that roller is not rusted badly just roll it around to where the push rod is all the way in and push the whole thing out ....... if you have a rusty mess you may have to remove that pin ..... I have never needed to remove that pin yet ..... the push rod is slanted ..... the roller will only go around in one direction ..... these LCS' with this roller system were the best LCS' ever built in my opinion ..... the main purpose of that pin is to prevent the roller from going backwards if I am not mistaken ...... posted by Jent on Nov 13 of 2020.