Originally Posted by Doc68
'28 Rod with 4 inch drop tube axle; 49-54 GM spindles.
Help. I need a quick lesson in king pins and what keeps them in place because the passenger side wants to leave the spindle!
According to the photo located at this link, 1942-47 Chevy front axle
, there should be what they call a "Kingpin Lock Pin" (#13 in the photo) which secures the kingpin. Even though the photo is for earlier year Chevies, it should be about the same for your tube axle. That's the same method used on my former '37 Plymouth so I believe it is a common design.