How to grease a kingpin PROPERLY.
Grease must come out top and bottom bushes. If you can't get grease out both bushes, jack it up and rock the wheel while pumping grease into it
Below is a couple of videos on replacing kingpins. Even if this is a job you are unlikely to do it gives you a better idea of how it works
This is walmeks video on you tube. Removing and installing king pins with hydraulic press tooling. Thanks Walmek
This is Tiger Tools you tube video on removing kingpins with a manual press. Thanks Tiger Tools
This is Outback Trucker Bucks you tube video. Freightliner/ Mercedes King pin replacement. Thanks Outback Trucker Buck