2000 A6 2.7T driveshaft removal

[Louis-Alain Richard]

According to ETKA, these bolts are "bolts with hexagon socket, self locking,
M8x48 mm".

So, they are very probably "loctited" in there, hence your difficulties.
Usually, they just need a good effort to start but that's it. 
Clean the hexagonal holes, buy a new good high-quality socket (or an
L-shaped allen key), slip a length of tube over the handle of the ratchet,
and crack them with a good push. In fact, they won't "crack", they will
begin to move slightly and the resistance will diminish slowly after a few
turns. It's the same feeling as when you're about to snap a rusted bolt :-).

Heating the head should destroy the bond, but I doubt that sufficient heat
will reach the Loctite that is 48 mm away from the source of the heat.

Louis-Alain


-----Message d'origine-----

The Allen head bolts on either end of the driveshaft refuse to budge.
Before I get a bigger wrench and strip out the heads, are they installed
with Loctite or something that would require heating?  I was expecting to
see Torx fasteners but they are regular Allen head bolts.
thanks,
Dave