Before removing or adjusting the torsion bar(s), measure the existing ride height, which is the difference in measurement to the ground from the center of the lower arm's inner mounting bolt and the lowest part of the spindle. Position the front wheels straight ahead, raise the vehicle, and support it securely on jackstands. If the vehicle has Automatic Ride Control (ARC), ensure the air suspension switch is turned off before raising the vehicle to prevent damage to the system components. Disconnect the torsion bar protector from the frame, then unscrew the bolt from the torsion bar nut while counting the number of turns for later reference. Use a heavy-duty two-jaw puller to raise the adjuster, ensuring the puller has an adjustable bridge to prevent the jaws from spreading under pressure. After tightening the nuts on the bridge, remove the torsion bar nut and lower the adjuster. Slide the torsion bar into the lower control arm and remove the adjuster, followed by the torsion bar itself. For installation, reverse the removal steps, ensuring to lubricate the threads of the adjuster nut and use a new adjuster bolt coated with a special adhesive. When installing the adjuster bolt, screw it in the same number of turns as the old one, plus two additional turns. Adjust the ride height as necessary to ensure the vehicle is level from side to side while sitting on its suspension. If the vehicle has ARC, disconnect the air lines from the shock absorbers before making adjustments, and roll the vehicle back and forth while jouncing the suspension before and between adjustments. Finally, have the front-end alignment checked by a dealer service department or an alignment shop.