OldIHC

So, I got a call from my mechanic yesterday saying the king pins that I ordered were the wrong size (see pictures, new "incorrect" pins on the right). I have a 1949 KB2 (#703xx). I ordered the 7/8" king pins based on the year and model of the truck etc. It turns out I need the 3/4" king pins. They are now ordered and on their way to Ontario from Alberta. I'm guessing at some point a previous owner swapped out the axle? Anyway, just wanted to let everyone know. Funny things happen with these old trucks!

They changed king pin diameter sometime during production, you have original axle,

I went thru this in 1975, the 7/8" ones were $14 at local auto parts the 3/4" ones were $75 at a vintage auto supply, a lot of cheddar for 1975

Thanks! I can assure you the 3/4" are still a lot of cheddar. Around $500.

Any machine shop should be able to turn a set for much less than $500. One of the good options for the bushings is a Delrin plastic. Delrin bushings were available when I installed a new dropped axle in my Ford.