Originally Posted by bakken
Lubing the pin will just attract grime that will increase the wear.
I haven't lubed the pin on our fifth wheel, ever, and there is zero wear on the pin or the hitch mechanism.
So from my experience, I would leave it dry.
You should clean the grimy grease out and put in good grease.
Ive had semi trucks that would get dirt on the 5th wheel when barebacking, and it was ALWAYS scraped of and cleaned and new grease installed- they actually make covers for 5th wheels just to prevent this. And even properly greased semi 5th wheels will wear out the pin, pin mount plate and 5th wheels over time .
My current 5th wheel rv hitch with being greased the grease is turning black- so there is friction wear starting already with a little more than a 1000 miles.
- ?no lube is a really bad idea- that doesent even make any kind of sense at all. All moving parts need lubrication or premature wear will occur
Ps. If you mic'd it I bet there is wear.