Z Height

Trim height is a predetermined measurement relating to vehicle ride height. Incorrect trim heights may cause symptoms similar to alignment problems. Check the trim heights when you diagnose steering or vibration complaints.
The Z dimension measurement determines the proper ride height for the front end. The Z dimension is different for RWD vehicles and 4WD vehicles. The 4WD vehicles have different points of measurement to determine Z height. Use the torsion bar adjusting arm in order to adjust Z height. RWD vehicles have no adjustment and could require replacement of suspension components.





On RWD vehicles, measure Z height from the center line of the bolt of the front lower control arm down to the lower inboard corner of the ball joint. Trim all Z heights at 67.0 - 79.0 mm (2.6 - 3.0 inch).





On 4WD vehicles, measure Z height from the center line of the pivot bolt (1) down to the lowest inboard edge of the steering knuckle (2).





Trim all curb Z heights at 114.0 - 128.0 mm (4.6 - 5.0 inch). In order to adjust Z height, turn the bolt that contacts the torsion arm as needed. One revolution of the bolt into the nut increases the Z height by 6.0 mm (0.2 inch) (1).