Crank bolt hard to loosen - 5sfe, SOLVED Options

[dgbldr]

I can't loosen the bolt on the front of the crank. It's on real tight.

I tried an air impact rated at 600 ft-lbs. No go. Not real confident it actually puts out that much torque, but still...

Also made a tool similar to the factory tool to hold the pulley. Long plate with 2 bolts through it into the threaded holes on the pulley. Torqued plate hard against pulley. Used cheater bar to turn crank bolt. No go, bent the 2 bolts. I estimate I put about 250-300 ft-lbs on it.

Has anybody run across this problem before and found a solution?

This post has been edited by dgbldr: Apr 24, 2009 - 6:47 PM

[soulshadow]

650lb rated impact wrench does the job, but make sure its actually tested at 650lbs. Some cheapo's don't even get close to 500 when it says 600.
When you press on the trigger and it sounds like a tornado, you have your 650lb wrench, but if it just buzzes and whirls thats just an underrated wrench.