My timing chain case broke and I am trying to replace it with the engine in the car. I am down to removing the crank bolt and harmonic balancer, does anyone do this without the crank lock, will I need some sort of gear puller to remove the h.b.? I think I can remove the crank bolt by bumping the starter but Im not sure how I can rig a way to tighten it. Any suggestions? Did a search but didn't find what I was looking for.