Re: 1930 733 kingpin removal

Posted by tfee On 2010/8/26 10:42:55

34PR, those are the bearings in question. There are nine of them total in each cup and each ball bearing is supporting about 3 percent of the cars weight. The only time they move is when the car is turning so 99% of the time they just sit there and take all the pounding from the road. Since they are more or less static most of the time they have worn .010 deep divets in to the upper and lower bearing races. The spindles actually snap to a straight ahead position now as the spring washers at the top of the assembly push the bearings back in to their divets while exiting a turn.

Owen D, that section looks to be from a later model where Packard engineers have discovered the advantage of "off the shelf" kingpin bearings. The earlier kingpin has a flange at the bottom that acts as a bearing surface as shown in Peters drawing above.

Peter, it looks like you guys have solved this problem already. The only thing missing from your print is the bearing part numbers. After I get the pin pressed out I'll take some measurements and get you this info. I live just outside of Detroit so the machine work should be easy to get done and there are a number of large bearing companies in the area.

Thank you all for your advice, maybe I'll write up a how-to tech article when it's done and back together.
Todd