Flip the upper BJ nut and set it flush with the stud. This not only prevents the stud from mushrooming, but also prevents the cotter pin hole from collapsing.

When the taper breaks free, it won't move much - maybe not even enough to see, so check frequently. Since this one is worn out, it dropped ~1/32".

If it WON'T break loose, it may be necessary to drive for a few days with the upper nut LOOSE a few turns, but still cotter-pinned. Check frequently for the bushing to rise against the nut.

This is my new favorite way to get the cams out:



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Owner caption October 2009 · Photo 2961 of 5000