knock out the old one with a long steel rod and a hammer set the new one in place and knock it in with a dead blow hammer - used to do this on BMX bikes as a kid Yes I also made a makeshift tool out of threaded steel rod and large washers but still to this day if it is a steel bike with a steel headset the dead blow hammer works great if you hit it squarely. Sam D. Between my huge cresent wrench and my hammer I don't need much more than duct tape to do anything. I also have a torch and a welder just in case