Packard Forum Index » Pre-War (1899-1942)

Where the kingpin goes through the wheel support, it is pinned in place with the lock pin, so it is not a rotating part. Only the spindle rotates, and the kingpin is static.

The bushings in the spindle are supposed to be reeemed out to .866, if using the standard size kingpin. So I am having a hard time visualizing that .001" difference in the wheel support bore would cause significant play especially after being pinned which essentially wedges the kingpin against the opposite side of the bore.

So that being said, if the kingpin is "wobbly" after being pinned and the wheel support is indeed oversized or the kingpin is undersized, then an option would be to have a machine shop install a metal sleeve (or a speedy sleeve) at the top and bottom to make up the difference (leaving the lock pin hole clear). That would solve the issue. Since the kingpin doesn't rotate in the wheel support, a steel sleeve can be used as it doesn't need to act as a bearing surface.

.001"-002" play is below the limit of human perception for most intents and purposes.

I did manage to resolve this. Old cars tell no lies.
The drivers side wheel support inner diameter was measuring at 0.872"
The passenger side wheel support inner diameter measured at 0.867"
The stock kingpin set measured 0.862".
I found a reference that Packard sold kingpins in .005" and .010" oversize. So I suspect that this car is a bit unique in that the left and right wheel supports were different sizes.

What I managed to find was an old Moog cross reference with each kingpin diameter. So I found kingpins to fit the unique diameters. With an old Bluepoint adjustable reamer I was able to size the bushings to make a nice fit.

I hope this helps someone along the way.