I've had that damn thing on and off more times then I can count. My front main seal will not seal even if I encased the whole damn engine block in a big silicone box. That said I have had a pulley fall of the crank, in the middle of Detroit in January.
1)BUY NEW BOLTS. I went to the dealer to make sure I got the correct grade.
2)The new bolts come with blue locktite already applied
3)Those 6 hold the pulley to the harmonic balancer. The vibration dampner gets sandwiched between the 2. If you have all 6 bolts out, start prying the pulley off. They get stuck with grease and grime.
remember to torque them down in a star pattern to the correct spec. I think it was 25nm. Check with whunter on that.
front pulley fell off... CHECK YOUR BOLTS