I asked these same questions over on the OldGmcTrucks forum as well, but thought it might help to ask here too. Hopefully I ask these question correctly.
I've been searching for a new king pin set for my 2-Ton GMC 350-24 project, and I'm finding two types. On one set, the thrust bearing at the bottom of the axle boss seems to be made up from what looks like two thick steel washers with a bronze washer in the middle. The second type (which is more familiar to me) uses a ball type thrust bearing at the bottom of the axle boss. Any thoughts on why there are two styles?
Also, I ordered a long Sunnen honing mandrel so I can size the bushings to fit the king pins. Is there a preference on stone grit for finish? I can hone it to whatever finish needed. I'm just not sure if there should be a courser finish in the cross-hatch pattern for holding grease? Or something smoother. I'm concerned too course of finish would not provide enough bearing surface for wear. I also don't want it to be too smooth if that's not right either.
Anywho, thanks in advance for your thoughts.
Take care.
Last edited by DavidBraley; 07/31/2016 5:03 AM.
