Technical Does no-play mean zero?

Proper shop uses a hydraulic king pin press....Heat is for a guy in his garage. If you rely on the wedge pin to hold a loose pin in a large truck it won't stay tight very long..Hammering on a frozen pin can mushroom the the top, have to be careful...

 

That's why i asked, thanks for the smart *** answer.

 

I just give you **** because I know you can take it....

I think you need to move the metal somehow while it's hot, if you want it to change shape. Sheet metal behaves differently, because the surrounding cold metal restricts the movement of the small heated area.

 

Rich B on the other king pin thread describes heating the axle, using a mandrel and peening the axle to resize the pin bore...This sounds ok for a hot rod if you don't distort the machined flat surfaces. Every axle I have seen is forged so it shouldn't get stupid from sensible heating and peening.

 

Sensible. The key word with as many definitions as there are people using it.

 

Lol i know man, i was serious when i said that, it makes more sense to me than if you would lay it out in engineering technology. I didn't know if it would make it shrink, or just harden it. How about knurling that area of the king pin?

 

My stepdad was a guy who never should have been allowed to touch a wrench- but thought he was a guru. On every subject. So he was always very determined that one did not have to ream king pin bushings, just use a brake cylinder hone. He was determined enough to do it, to prove me and everyone else around wrong, including the guys in my gramps' shop, who taught me to do it right when I was about 10- so he did, on a 63 F750. Honed until he could get the pins in part way, then got out the BFH and drove them home. Hmmm, steering wheel won't move- big surprise. So he says use the BFH and drive them back out . Nope, not budging. So I have to remove the whole axle and haul it to the machine shop to press it apart. You know that there was no way to convince the guys at the machine shop that I didn't do it...

 

While looking for the loc***e that you use to keep press-in bearings from spinning, I came across loc***e 638, which says it is for that purpose, but also restores out-of-tolerance slip fits, which sounds like it would be perfect for a teency bit wiggling kingpin! Gonna give it a try, since I need some anyway for the bushings in the spindle

 

sounds like my old girl friend. LoL

 

Think about it. Heating a piece of cast iron with a hole in it and letting it cool does not make the hole dia. smaller. Install the king pin in the axle and use the tapered lock screw and nut to hold it in place and you are 'good to go". King pin is not suppose to be a tight fit. It should slip in. Bushings should be a slip fit with zero play.