King Pin Inclination is the angle the king pin leans in towards car centreline at the top. It keeps the steering axis close to the centreline of the tyre for easier turns. It is set at the factory when the end of the axle is drilled and the only time it changes is when the axle is bent therefore is rarely adjusted and requires specialist equipement to do so.
hello Tony, thanks for the reply. We have a major wheel wobble problem and have tried everything else we can think of, and have been looking for something that will give the actual degree of inclination so we can check it, but no luck anywhere. Kerrie
All wheel aligning machines give King Pin Inclination. I Have never had a problem with any of the Chev 4's I have owned or worked on over the years. You could try putting a wedge in the front axle where it bolts to the springs. This will increase the camber. Would be worth a try but will make the steering heavier.
Unless your car has been in an accident and has a bent axle the only adjustment that can be made besides making sure the front wheel bearings are set right is the toe-in. My 28 had a wheel wobble problem when it would hit a rough spot, and the front tires were wearing where they appeared to be scuffing. I checked the wheel bearings then the toe-in and it had toe-out of 1/4" I adjusted the tierod between the left and right wheels to 1/8" toe in and it now steers and rides great. Some where in the old threads on this site,is a detailed home shop way to check and adjust toe-in.
I think that in the 27-28 repair manual there are specs for the alignment of the front axle.
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Steelin Time is correct, most alignment equipement will measure "king pin inclination" but may be called "steering axis inclination" but the only people I know of that can adjust itare heavy truck alignment garages as it requires bending the beam axle. Tony
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