After many rounds of installing CVs I have an almost perfect routine -
first - spray down the bolts with WD40 and use a small dental pick to
remove the dirt from inside of the heads.  Then spray them down with brake
cleaner (advoid the rubber boots) - after that I insert my KD tools 8mm
tripple square on the A series or my 8mm allen on the T series VW and use a
hammer and give it a really sharp smack.  Then I *tighten* them slightly
then loosen them off - works 95% of the time.  If I strip the head I find
vise grips will sometimes work or cut them off with a dremel tool.

At 05:38 PM 18/09/2000 EDT, kenneth d lewis wrote:
>Greetings and Salutations;
>        It is with a bit of trepidation that I share something I
>discovered today. For twenty+ years I have struggled with removing  those
>stupid allen head bolts in the CV joints. Today I decided to experiment
>with using an impact wrench to remove them. They zipped out in seconds! I
>used the lowest setting on all most all of them with no problem. I was
>quite leery of stripping the heads out but the VW gods must have been
>smiling on me today.
>
>
>Drive Safely & Good Luck
>Ken Lewis    <Kernersville,NC>
>86 VW crewcab;60 356B Coupe
>--------------------------------------------------
>
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-- David Marshall - Volkswagen Enthusiast - Quesnel, BC, Canada   --
-- 78 VW Rabbit, 80 VW Iltis, 80 VW Caddy, 84 VW Westfalia        --
-- 85 VW Cabriolet, 87 Audi 5000 Quattro, 88 VW Syncro Double Cab --
-- David's Volkswagen Home Page        http://www.volkswagen.org  --
-- Fast Forward Autobahn Sport Tuning  http://www.fastforward.ca  --
-- david@volkswagen.org (pmail) or vanagon@volkswagen.org (list)  --