The easiest way to check whether your kingpins are worn is to jack up the front axle and grab the top of the tire, now pull it back and forth. You should have VERY little to no movement. If you can feel it move slightly you should replace them.

Jeff


My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton