C70 L5-2.4L Turbo VIN 63 B5244T7 (2003)
If the screw is rusted on, loosen the nut a few revolutions and tap loose the screw.
Remove the nut and screw.
Spray again with rust solvent on the ball joint.
Note! Do not drive in any chisel or drift between the "ears" on the wheel spindle.