Look at the DIY documents in the resources tab, you basically need to make a tool out of 0.25 inch rod and use it to lock the clutch in place and keep it from spinning so that you can remove the fan and then the clutch.

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2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)