King pins

I am assuming you mean to grease them? The best way to greese king pins is to jack up the front axle until the tire on the side that you want to grease is off of the ground

 

I have never heard that. I have a 2000, have always Done it that way

 

I've never jacked up a steer axle to grease it on anything. Never had any kingpin issues either after many years too. Far as I'm concerned, if grease comes out around the thrust surfaces, its got lubrication.

@PE_T I believe posted a page out of a workshop manual for something not too long ago. It specifically stated to not jack up the axle.

 

If jacking it up makes you feel better then do so. Same for me. I have jacked the truck but 99.9% i do not. Have never experienced failure or premature wear by not doing so. All king pins i have noticed to wear out prematurely is not getting greased at all.

 

I guess I am just more old school. I jack it up, grease my truck every 2 weeks, use conventional Rotella, and do a PM every 12k

 

Ive always jacked the front end up. Even though there is no play in the kingpins, once in awhile I've noticed it purge a little more out when you set it back down so I think it helps.

 

It was from his Freightliner Cascadia service manual I believe. The Newer Detroit axles on that one.