Front Axle Alignment
Toe
Camber
Caster
King Pin Inclination
(KPI)
Turning Radius
Axle Setback
THE KING PIN INCLINATION
(KPI) OR
STEERING AXIS INCLINATION (SAI) IS
A DESIGNED ALIGNMENT ANGLE
| KPI is checked with camber and caster to determine if a spindle or axle is bent. |
| King Pin Inclination (KPI) is the inward tilt from vertical in degrees. |
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| King Pin: The King Pin is checked for looseness as part of the "worn parts inspection." If worn, nonrepeatable alignment measurements can result. When greased, no movement between the King Pin and Steering Knuckle should be detectable. |