harmonic balancer removal

[nosinjcted]

I have a question on removing the harmonic balancer, I can't find the right size bolt's to screw through the puller and into the pully. Does anyone know what size bolt and what type threads they are??? I'm working on a 98 4.0 SOHC motor.

 

[aldive]

The procedure when I removed mine ( to replace with an underdrive one ) is at http://www.explorerforum.com/forums/showthread.php?t=151951&highlight=underdrive