[DanG]

You will need a puller to properly remove the crank pulley. Re-installation is even more difficult, since you CANNOT use any type of hammer or strike to seat it- Any impact has the potential to un-seat the bearings or throw the crank off its alignment.

I bought an identically threaded long bolt, and used varying numbers of washers and actually tighten the pulley back on. This risks stripping the threads inside the crank, however- But as long as you're grabbing at least 3 full turns of threads, I haven't had a problem with this method.

By the way, you don't have to remove the water pump pulley. Just remove the 2 bolts that hold the cam seal bracket on. You'll need a new seal bracket gasket (what Bill J. and I call the "squiggle" gasket) to re-install. All new timing cover gaskets are required. You'll need some black RTV silicone and put a dime-sized dot at each point on the block where the heads/block meet (i.e. any place there's a break in the sealing surface).