Of all the many ideas I've seen on T-2 and Vanagon lists, this one stands
out as of the highest value. It was 2 or so years ago G. Matthew gave the
procedure, and I have applied it successfully to taper fittings and any
extra stubborn threaded fastener. It doesn't work 100%, but danged near,
and always should be applied before wailing with a hammer or 4 foot
cheater. I refer to this as the Bulley Tech in honor of both G. Matthew and
Cyril L.

I use PB Blaster, dang the cost, as a penetrant when I need the very best
results. It goes places WD-40 never heard of.

At 07:35 AM 11/07/2002, you wrote:

>The 02 sender is the perfect example of the 200 taps application,
>featuring challenges from covalent, and ionic bonding, as well as
>thermal expansion/contraction stress. Penetrating oils will help, but
>tapping will cure the stuck 02 sender.
>
>Remember, the tapping is NOT in the direction of rotation, but
>perpendicular (from the 'head' of the bolt or nut) to jar/rattle the
>threads at 90 angle to their thread face.
>
>(and actually, it was my grandfather, Cyril L. Bulley, a career
>automotive machinist for Chrysler and inventor who told me this little
>secret.
>
>Bringing ideas to life,
>G. Matthew Bulley