[Vwdiesel] Alternator belt-What the ?

[Libbybapa at wmconnect.com]

There should be four allen head bolts holding the pulley onto the crank 
timing gear.  The pulley just slips over the center crank bolt, so messing with the 
center crank bolt will do nothing to adress the pulley.  There is a nub on 
the timing gear, between two of the allen thread holes.  That nub fits into a 
hole or notch in the pulley to assure that it only goes on one way.  If the 
pulley is installed rotated, so the nub doesn't go in the cutout, you guessed it, 
it will seem tight, but wobble really nicely.  Kinda makes me wonder why the 
nub business in the first place, but it may keep the rotational stress off the 
bolts.  I imagine you need to take off the allen bolts and install the pulley 
with the correct orientation.  On the alternator there are three bolts to 
loosen.  The one in the slide area for obvious adjustment, the one through the 
pivot of the alt, and the one for the pivot of the bracket arm.  Tighten them 
snug enough to still let the alt move.  Then while yanking up on the alternator, 
tighten the one in the slider slot.  Relax, and tighten the other two.  Do 
that after adressing the crank pulley. :-)
Andrew