Remove the nut for the lower ball joint / control arm

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: Locating Ball Joint Nut

Courtesy of VOLVO CARS OF NORTH AMERICA.

Clean the exposed threads outside the nut.

Spray with rust solvent before removing the nut.

Counterhold with Torx TX 40 at the ball joint pinion when removing the nut. This is so that the ball joint boot does not turn.