Having limited access to tools often limits your abilities for sure. I'd check with some of those old timers and see if they may come to you or loan you what you need. Another problem with using a hammer in the car is you don't have a lot of room to swing it, and it becomes a real slow process, plus the shock of using one can easily separate the outer and inner rings and cause the new balancer to fail also. That, and your applying that same impact directly to your thrust bearing with each swing.
