I guess someone should chime in and let you know that you don't have to take that bolt out to do the waterpump job. You can undo the pulley and leave the hub still connected to the crankshaft. There are six bolts inside the pulley that once removed will allow you to work the pulley and damper off the front. It should be noted that the pulley and damper are a tight fit on the hub and will require effort to remove after the bolts are out. It is however a lot less effort than removing the whole hub/pulley assembly together.

PS Don't forget to align the pulley to the tdc mark and then mark the pulley as well in this position. The bolt holes are not symmetric and the pulley seperates from the damper once off the hub.