Swivel ball rust - replacement mandatory?
My swivel balls have "some" rust / pitting... it's been suggested that I just switch to grease and see how it goes for now... This is a good source, though I won't name names, y'all know him.
I don't understand the whole preload thing for the bearings/races on the swivel, so I'm hesitant to replace the swivel ball... making the suggested attractive. OTOH, I don't want to go through all this just to do it again to replace it properly. I'm just a bit concerned about trying to preload the pin bearings.
Anyone care to explain preloading bearings? I saw one picture online (and only 1) using a simple fish scale hooked to a hub bolt... but I don't really get what they're measuring - the force required to start turning the hub?
As to how rusty? Perhaps 10% of the visible surface area is rust. Enough that the old seal, when I moved it over the rust, was notably having friction in those areas.