Loose Kingpins will allow some movement up and down. Jack up the axle, but leave the tire close to the ground. Have a helper pry the wheel up with a pry bar (just enough to make it move, not compress the spring) and watch the spindle/axle point. There should be no movement between the two.

Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.