[blykins]

Bolt the cap back on, torque all the bolts, put a dial indicator on the crank snout, pulley, whatever is easiest, then take a screwdriver and pry in between a crank counterweight and the block, back and forth.

By the way, when the cap goes back on and the bolts are run down, pry forward on the crank while you torque the bolts. That helps set the cap and thrust bearing.