Could someone please tell me the trick to getting the water pump pulley off on a 1992 300sl-24 m104 engine.Thanks much

I have a 93 M104, but not the exact same as yours. Is your problem how to get the bolts loose without damaging the pulley? If so, use an old belt from a car or one of your own old ones - leather works best if using personal belt. Just wrap it around the pulley and pull it tight to create a pinch-point on the belt in the opposite direction you are turning the bolts. Hope that was what you were looking for. Good luck.

Thanks for the info.any tips on removal of water pump?Anything would be helpful. Thanks