Separate the shaft and pull out the inner joint
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.
Place the shaft on a workbench. Carefully separate the shaft by pulling out the inner joint from the constant velocity joint. At the same time, note the position of the balls in relation to the markings. See Clean and mark up the constant velocity joint .