Well, it looks like my alternator decided to die on me. I have been dreading this day because the pivot bolt was seized in the head. Heat and PB blaster let me down and it broke off in the head. I made several attempts at welding a nut to it, but was unsuccessful. In order to drill it out as accurately as possible I decided to pull the radiator, shroud, ac condenser, tranny cooler, and the grill.
That shiny spot is the broken bolt ground flat.
After grinding it flat and center punching it as accurately as possible I started drilling. This pic is after the 3rd bit size.... start small and work up.
I tried my easy-outs ,but they felt like they would break long before the old bolt would give up so I just drilled the final hole to 5\16 and tapped to 3/8-16.
I just need a new bolt. i got the rest of it put back together.
Good times.