Get a proper pin removal tool - http://www.amazon.com/Timing-Chain-Guide-Rail-Puller/dp/B00I38SQYI . I pulled several pins with stacked washers (injector heat shields) and I'm happy to have paid $30 for the tool even if the last couple of pins I pulled are the last I ever pull. At that I use a $10 Autozone bit set on 603 head bolts.

Sixto
83 300SD