I'm pretty sure I need new kingpins,but I'm trying to make sure before I purchase.I put fairly new tires on the front of my 51 3100 800 miles ago.The truck wanders all over the place. I greased up the front end and things tightened up but it still wanders,especially on uneven roadways and curves.I also noticed that the front tires squeal on sharp curves.The front tires are wearing very quickly. The wear is heavy to the inside of both tires.No scalloping and it's about the same to both tires. Is this a clear indication of kingpin looseness?Is there a test besides wiggling the tire?I have noone to look while I wiggle or vise-versa.---Jack
Last edited by CJSTP; 08/30/2014 2:46 PM. Reason: forgot to sign my name
