Greasing The Seal
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Lubricate the wheel bearing sealing lip abutting the drive shaft with a little wheel bearing grease. P/N 1161689.
Brush high pressure grease, P/N 1161246 onto the drive shaft so that the splines on the rear half of the drive shaft pin are filled.