How to tell when your clutch needs to be replaced.

Hi its Rufus could it be the rearends or the driveline i dont get that clucking or boggling sound like a bolt hitting it only dose do this in high gears in8th gear you can hear slightly but in 9th is the loudest 10th not as bad 9th gear so change all and I'm still getting that sound

 

Could it be the rearends I have replaced the main shaft with gears and input shaft and I still getting that clucking sound like the head of a bolt hitting when I'm in the last 3 gear the9th gear is overdrive gear it do it more then the 10th gear I really thank you for your help

 

I assume you mean going back up through the gears not backing up?
Drop a magnet through the fill plug holes and see what you find in the rear ends.
It reminds me more of a 9 spd I rebuilt around 1985 which had a lot of broken gears. It was fine bobtail but with a load in high range it would start hammering somewhat like a broken ring gear tooth. It had cracks in a mainshaft gear 180 degrees apart. The cracks were near the base of the teeth and nearly invisible to the naked eye.

 

I was kind of thinking the same thing @BoxCarKidd

Seems like i had the same noise and the main gear in the front rear end started losing teeth. That truck had a very worn out super10. 2 more rear ends got replaced after i got out of the truck and before i left the company.

 

So I have 2016 KW T680 with isx Cummins and a 13spd Eaton transmission. About 7 months ago my clutch and Master Cylinder for the pedal went out getting off the highway, boss had roadside come out and replaced the clutch and Mast. CYL. replaced that night on the side of the road. Fast forward 7 months and the throw out bearing freezes up bc no grease. So boss has me take it to shop and they replaced the clutch again. I do a load from Idaho to Phoenix AZ omw back from AZ the new clutch starts slipping, I managed to make back to Salt Lake city and take it back to same ship that did the clutch. They said it just need to adjust the clutch, I do another load, and was running great, then all of sudden its started slipping again, once again take it back to the Same shop, and said it was out of adjustment. So this happens about 2 more times and they replaced that new clutch under warranty, I get it back, and it's still slipping! They replaced some pedal cylinder on the side of the transmission, and was good for about a 3 days and once again it's slipping. Took it to the dealership and they said everything looked fine. Tried replacing the fuel pedal, because one mechanic said it could be it because it seems to do it anytime you give it more then a half pedal, but nope. I do hear some slight air leaks on top of the transmission, but every mechanic I have spoken to says no that wouldn't be the problem, bc it's shifting fine. I'm literally at my wits END!
SINCERELY, ONE AGGRAVATED TRUCKER
JUSTIN B

 

Be glad you do not own it. I know you are losing work but it is not double draining your account.
Do not know that I can answer anything for you but: What is the clutch brand and part number?

 

So I took a pic of the one that they put in, unfortunately this all I got.