Problem: Pulling pressed-in rocker studs from cylinder heads. The usual way to do it is put a spacer block over the stud and tighten a nut down on it until the stud pulls out. But if a stud needs to be replaced it's because the threads are stripped or it's broken off and there are no threads so the usually way doesn't work. To solve this problem I made a hydraulic stud puller utilizing a Porta-Power Pull-back Ram. Now I just need to put a nut on the stud and pull. If the stud is stripped or broken I just weld a nut on it.