WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Installing Carbon Intermediate Ring
Courtesy of VOLVO CARS OF NORTH AMERICA.
key in the shaft
adjusting rings
intermediate rings of felt and the holder (the holder shall be exactly level with the casing); use drift and casing.