Stuck caliper bolt

[evanphi]

1975 CB750...

I need to clean my caliper piston and cavity, so I need to get my caliper off. My front caliper bolt won't come off. I've tried pounding it with a manual impact wrench, as well as heating it up first. All this after soaking it in PB Blaster for a few nights in a row. This is futile anyway because of the location of the threads. They're impossible to get to. It won't budge. The rear one came loose with a couple taps of the impact wrench, no problem.

Any tips? Should I try tighten-loosen-tighten-loosen...etc with the impact wrench to break up the threads?

I'd like to avoid drilling the head off this bolt...  :-\

[evanphi]

[img]http://coffeeforclosers.files.wordpress.com/2010/07/inanimate-carbon-rod.jpg[/img]

Yay! Breaker bar worked. I also used a new 8mm hex dedicated socket instead of the bunch of reducers/adapters.

[url=http://www.harborfreight.com/12-drive-25-breaker-bar-67933.html]Product at Harbor Freight for those in the US of A[/url]