I've seen a nice little home-brewed rig that uses a couple of thick steel plates, big round stock uprights, and a 20-ton Porto-Power to push stubborn kingpins out. Once some pressure is applied to the kingpin, a little heating and tapping on the axle eye gets the pin moving. The procedure is a lot more controllable than hammering, and doesn't create as much collateral damage. It also doesn't need as many references to the "Sailor's Encyclopedia Of Useful Phrases" before the job is complete!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!