Kingpin inclination is the amount that the top of the kingpin is inclined toward the center of the vehicle. This is measured by substracting the top (1) from the bottom (2) measurements. Use precision instruments to check the king pin inclination. If the axle is bent or twisted, refer to Front Axle Replacement in Front Suspension. Straightening the axle center in order to correct the king pin inclination will also change the camber. Recheck the camber after correcting the king pin inclination.