There is a single 8mm allen bolt in the front center of the fan for removal. You need two specail tools for this...One is a thin 8mm allen with a long handle and one is a hook shaped tool for holding the pulley. Snap-on sells the kit.
------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope

1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM