[s-cars] sheared crankshaft pulley

[David Forgie]

I case you want to know what a sheared crankshaft pulley (key) looks like, go to 
this post:

http://forums.audiworld.com/s4s6/msgs/252125.phtml

I agree with Scott.  Replace with each timing belt job.

But would add the obvious, avoid impact wrenches and tighten with a proper 
torque wrench (and/or extension as per Bentley).

Dave F,