Loosen the wheel mounting bolts. Remove the front wheels. Use an open-end wrench №18. Unscrew the ball joint fastening to the steering knuckle. Use a socket №18. Unscrew the arm fastening from the subframe. Remove the arm. Install a new suspension control arm. Insert the ball joint into the steering knuckle and fix it with a new nut. Use an open-end wrench №18. Tighten the arm fastening. Support the lower control arm with a trolley jack. Use a socket №18. Tighten the arm fastening.