.8605 or .859 Reamer for a .860 Kingpin in a '60 Panel F-100

[TujungaJim]

Gentlemen, I've read post after post about kingpin repair and replacement and just taking it to a shop that knows what they are doing and let them do it, but I want to know the facts about how it is done properly. I read in one post, a manual with no reference to what year truck, that it should "hone / ream both bushings in unison for a final clearance of .001” to .0015”." So my question is, for a .860 Kingpin in a 1960 F-100 Panel, what is the correct size reamer? My other questions are, Is it OK if the shop I have uses a .859 reamer? Would I be better off supplying them with a .8605 reamer? I guess overall, what should the final size of the bushing be if I am using a .860 Kingpin? Thank you for time! James

[GLR]

.859" reamer with .860" king pin = .001 too tight a fit. I use an adjustable reamer so the king pin slides through easily. According to what you wrote above, with a .860" king pin the bushings should be reamed to .861-.8615".
A good machine shop should have reamers to fit.

[spurredon]

I had a shop that use to do a lot of that work back in the day, he did great, that thing steers like butter!