Kingpin tolerance

Working on a rebuil of the front end of a 69 B. Complete crossmember is out and everything is getting cleaned, blased and painted. Looking through the book I have it says when installing new kingpin bushings to ream them to: Top .7815 to .7820 and bottom .9075 to.9080. After getting everything cleaned I'm trying to figure out if I need new bushings since I can't find the accepted tolerence before replacement. Existing bushings are as follows: Drivers side top .788 bottom .927 Passenger side top .794 bottom .909. Anyone have any input as to the accepted tolerence before it is reccommended replacing the bushings? Thanks

Hi,

Going by the tolerances you posted, your bushings are shot. I've been doing this a while so don't go by numbers on this particular spec as much as feel when I check out used swivels, but I recently put a used one in a vise to measure movement and found the one in the picture to move about 18 thousandths.

I agree, replace the bushings. I ream them to fit the pin rather than ream to what the book says. Typically the pin is spot on, but not always. I found an oversize pair on my last rebuild.