Hello guys I have been having this same problem with my sharan 1.9tdi, got my alternator pulley sorted out thanks to this thread but I have a problem with the bracket that holds the tensioner wheel, where the bar goes through the alternator mounting bracket there is a bush, mine has lost this bush and I cant find a part number anywhere or a replacement bush. Does anyone out there know the number for this or if not then the dimensions so I can source a replacement part. I have attached a photo of a good one