I'm working on a 2005 S40 T5. The belt(s) is frayed and I'll have to replace it. Is there a diagram of the belt configuration so I'll know what to buy and what to do. I'd rather go in knowing what's up so as to not interrupt progress by going to the parts store.

 

the belt to the alternator and compressor is PN#30777531, the belt to the crank is PN#30777530. You can find diagrams at » S40 Serpentine Belt Diagram and there are several vids on Youtube.