ford crown vic 1986, 95,000m, 5.0

if i'm not mistaking i believe the lower ball joints on this model are pressed in. to remove you need to jack the vehicle from the lower control arm, you'll need a ball joint separator to separate the steering knuckle from the the ball joint. move the knuckle assembly out of the way and whack the ball joint with a hammer till it pops out. in order to install you'll need a ball joint press to press back in the control arm. hope this helps

here's a pick of the tools

ball joint press

ball joint seperator