C70 L5-2.4L Turbo VIN 63 B5244T7 (2003)
Remove the steering arm from the wheel spindle.
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Use puller 999 5259.
Blow clean around the ball joint with compressed air.
Spray the area around the ball joint with plenty of rust penetrator. Spray the screw and the nut holding the ball joint with rust penetrator.
If the screw has rusted solid, slacken of the nut a few turns. Knock the screw so that it loosens.
Remove the nut and screw.
Spray the ball joint with rust penetrator again.
NOTE: Do not insert a screwdriver or punch between the "ears" on the wheel spindle.
