Marty, the cap does come off and is not threaded. Some trick that i've
used: 0) the claw part of a claw hammer. just go around and around and
around slowly prying 1) 1/2 of a pair of channel lock pliers. put part of
it against the lip on the cap and the other part rests against the rotor.
And just pry a little, rotate 1/2 pry a little, rotate 1/4 pry a little,
rotate 1/2... etc.

Hope these help. By the way, be sure to pump the brakes BEFORE you drive
because they need to self adjust!
-m

Matthew Pollard          "Racing with the wind and flirting with death
Dept. Of Chemistry        So have a cup of coffee and catch your breath"
University of Idaho
www.uidaho.edu/~poll7356

On Fri, 29 Jun 2001, marty wrote:

> ok, I have a real question now, I'm doing the front disc brakes and turning
> the rotors on my 85 and all the bentley says is "Grease cap, remove with vw
> 637/2". I've taken the little retaining clip off the little square nut thing
> sticking out of the grease cap, what next? I've tried prying and banging but
> don't want to proceed if in fact the cap "screws" off. And yes, I'm doing
> the brakes so I can slow down after I break the sound barrier :)
>