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: Gear Selector Rod And Bolt With Torque Specifications
Courtesy of VOLVO CARS OF NORTH AMERICA.
Grease moving parts with Volvo grease, part number 1161241-3.
Check the rubber parts.
Position the gear selector rod and thread the bolt.