I have a 911 Targa (1986). I threw an alternator belt. When trying to put a new one on I noticed that the ouside pulley half was not centered around the hub. It is not damaged. What seems to be damaged is the piece that mounts on the alternator shaft next to the fan. It is an oval piece with two flat surfaces. This piece holds the pulley and the spacers in place. It has a groove in it that lets the pulley half move off center. Does anyone know what this part is called, a part number and where I can get one? It would also be helpful to have an exploded view of this full assembly. Thanks,

 

That is actually part of the entire impeller/fan itself. It will require a new fan assembly. Part number is 930.106.012.00

I can post an exploded view of it if you need

 

Thanks, I ordered a new fan. Boy are they tough to find. I just finished taking off the old one. I need to replace the woodruff key that goes on the alternator shaft. Do you know what size it is?

 

That unfortunetly I do not know. That typically comes with the alternator, and Porsche does not show it as a seperate part number.

 

Thanks any way. I guess I'll buy a set of metric keys and see if I can find one that works.