Serpentine Belts
Buick LeSabre
Dodge Dynasty

When I was loosening the tension pulley to replace the serpentine belt on a 93 Dodge Dynasty the bolt that holds the pulley to the engine sheered off so now can I drill that out or is there no hope?



User Avatar
Wiki User

Get yourself an E Z OUT and a Helicoil. The E Z Out is like a drill bit that drills into the broken bolt and then when you reverse it, it grabs the bolt and will bring the bolt out. Take the broken bolt end to see what size you need. You can drill the bolt out completely but then you will need to tap threads into the block using a tap. AMKE SURE YOU DO NOT DRILL TOO FAR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! There is a product call a Helicoil where you can drill out the hole and then insert a helicoil which threads inot the hole and then your new bolt will thread into the helicoil. All is not lost.......sometimes the biggest headache is getting enough room to drill and tap. When you get the broken bolt out, I suggest you use a torque wrench when you install the next one, and if the bolt and the block are made from different metals, I suggest some antiseize on the bolts threads to keep this from happening again.