Hallo, danke für den link, habs gefunden unter:
Jon Evans - Water Pump Replacement
Werde es jetzt übersetzen, halt nur im Kopf:
Remove the fan
Stand at the left hand side of the engine and put your 32mm spanner on the viscous coupling bolt. Hit the top of the spanner towards you with the mallet (it is a reverse thread). If you are lucky, the bolt will turn and it will be easy to unscrew. If (like me) you are unlucky, you will have to use a bit more cunning. You can buy a special BMW tool to hold the pulley still while you turn the nut, or you can jam it in some way. This is what I did. With the spanner in position ready, I jammed a socket wrench against the belt, thereby applying tension. I also had the end of the socket touching the small cooling fan on the front of the alternator, stopping it turning. One good blow to the spanner with the mallet in my free hand was enough to get the bolt turning. Remove the fan and store it propped up in the same orientation as it was in the car. I don’t know why you have to do that, but I read it somewhere else. I presume the viscosity changes if you lie it horizontally.
Remove the pulley
Loosen the four pulley bolts. Now loosen the belt tensioning bolt on the alternator. Rotate the front adjuster nut clockwise to crank the alternator further into the engine and therefore loosen the belt. Now go back to the fan pulley and fully remove the four bolts, then remove the pulley. Let the belt hang in place.
Vielleicht kann jemand etwas helfen bei der Übersetzung, nicht das ich links und rechts vertausche
Grüße
colaman