Clutch nightmare

Engineers, Engineers and engineers..

 

The first 250k he drove the truck he was a double clutcher but the last 75k he floats. Pretty decently too.

Edit: I figured that’s why the clutch brake went out and clutch itself was double clutching. So I didn’t think much of the first replacement.

 

Bare with me... this being a 13 speed.... I know this is a stupid question but the transmission itself can’t slip in anyway right?

 

Clutch slip is pretty hard to mistake for an experienced driver. Engine RPM goes up when speed doesnt.

If something in the trans was causing this it likely be making heck of a racket, plus wouldnt happen in more than one gear. With no shifting issues it highly unlikely, plus it wouldnt come and go.

Also Eaton doesnt make the linkage, they dont give a rip weather it works or doesnt. Its just not their clutch thats at fault.

 

Thanks, didn’t think so. Felt like the clutch when I drove it too but just to make sure.

 

I really thought we had it this time. I wanna come drive this thing just to see what its doing and how it feels.

 

Maybe I’m wrong but double clutching shouldn’t have anything to do with the clutch brake. The clutch brake only engages when the clutch is fully depressed. If he’s engaging the clutch brake while changing gears then that’s no good.

 

Just adding an attaboy and some more encouragement. Can't wait to see how this epic tale ends. It sounds like they're giving it the attention it needs.

I'll bet $1 it turns out to be something really stupid. Mislabeled part. A missing bolt. Grease on the wrong thing. Something along those lines. It won't be anything engineering, or remotely tech related.

Don't take this the wrong way, but you know what's better than stroking out at the dealer over a bad job or service?

Watching someone else do it instead, for a change. I'm praying for you.

 

The only thing I could possibly see internally that could MAYBE cause a slip condition would be if the range synchro was being thrown out under torque in high range. Immediate reaction for most people when slip occurs is to back out of the throttle, which would let it re-engage again.

This is just me spitballing because it seems like the clutch side has been covered with repeats of new parts already and nothing is changing. I don't know if my theory makes sense to anyone else or not?

 

Here's an idea.

Aren't you somewhere in the country where there is a lot of open ground? Like if your family or somebody you know maybe owns a farm that is not public roads... I get the safety implication of what I'm going to suggest...

But can't you take that truck out and get it nice and hot and get that thing to slip so it slips and you know that it slips and you know that it's slipping and it's going to keep slipping and then drive to the farm and disconnect that freaking linkage and try it where no one else is and see if that's truly the problem.

Start it with the key and if he's good at floating he'll find neutral to be able to stop.

You have to isolate where the problem is.

You have to identify whether it is a problem that is outside of the clutch- linkage, pedal, whatever, or whether it's an internal problem- clutch issue, alignment, pressure plate, resurfacing, whatever.

It's just kind of ironic that the dealership has every 21st Century Modern tool ever created by mankind, but if there's a way you can go old school caveman do it yourself shade tree mechanic, you will find the problem.