? Rebuilding a Fontaine No Slack II

I'm trying to word this so I don't sound like an idiot.

Have you experienced mechanics ever found a 5th wheel not rebuildible ?
The 5th wheel in question is on a '07 Columbia day cab that I drive part time. First time I hooked to a trailer I could feel the mega slack banging back and forth,, very annoying. The slider is tight. 5th wheel body is not cracked or rusted that I can see.
I adjusted the slack (per Fontaine's instruction), it reduced it "some". I don't know how long this has been going on. My thinking is if this has been going on for any length of time the "ways" the jaws slide in have got to be beat up pretty bad rendering it not usable.

Thanks for your time.

 

Nope, don't have the adj. tool, did it off the trailer KP which I'm sure is worn a bit also. I don't know the history of the truck but can only surmise it's been treated unkindly in it's past.
I'm know rebuild kits are available, just don't want to recommend that avenue if the odds are against a successful outcome.
BTW, the truck has 740K miles.

 

Thanks Heavy.
Pretty much what I was going to recommend to the owner.

 

Thanks everyone, drove the truck on a short run today. The slack was,,, uhmmm tolerable, nothing I'd accept on my own truck.
A talk is in the future, very near future.
Not to diminish things or make excuses, these guys know next to nothing about big trucks. I'm the first experienced driver they've had and I'm trying to educate them. Mind you, I'm not getting stonewalled.

This week has been a B***ch with temps in the teens in S.C. and they deal with ground water in a environmental capacity so I've not pressured them.
I'll keep everyone posted on progress or lack thereof .

 

A little update.
The truck had to go in for a clutch. My boss/other driver couldn't get the truck in gear easy and it wanted to keep moving. It had a self adjusting clutch and was replaced with a normal manual adjust, much much better.

In the course of picking up the truck I mentioned to the shop about the 5th wheel replacement in front of the boss. He chimed in," that might not be an issue, we're talking about replacing the truck altogether "
So I'll see if they're true to their word or just giving me lip service.

 

OK, a little update. They're listening to me, truck got a brand new 5th wheel, one trailer got a new kingpin, one trailer is in the shop getting a whole new upper 5th wheel plate and kingpin. 3rd. trailer, the kingpin measured within spec. It's like driving a different truck.

If and when they do decide to replace the truck I'm at a loss as to what to recommend. They need a day cab like for gas hauling because of the tight places we pick up at. Kinda thinking about recommending a lease to simplify the maintenance issues, especially the emission crap.