Serpentine belt Volvo S 80
 

the serpentine belts are just to drive the accessories - no worry about damaging engine parts. You will need a tension release tool and possibly some tools to assist with rethreading around the idlers and pulley wheels

Its a bit more tricky since you have to remove the power steering pump. I would also recommend replacement of the idler and tensioner, so the compressor needs to be moved as well.