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Drivetrain Slipping Under Load

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Old Jun 26, 2013 | 06:26 PM
  #41  
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From: the great Maine wilderness
So... did ya ever figure this out? Just wondering if I get to keep that left nut

Also... Did you check the front u-joints on the shaft? didnt ever see it mentioned, and I replace that one twice, for every time I replace the rear, so it would be my first suspect....
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Old Jun 26, 2013 | 06:52 PM
  #42  
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Man, you're so attached to that left nut!

I've been meaning to update here. I've still got the slip. I have all sorts of new play and pops and jerks with the rear locker now, so it's harder to feel the slip all the time but I can tell it's still doing it.

I couldn't find anything wrong with the ujoints, but I'm still not going to rule then out.

My clutch master cylinder has been leaking. It's getting rough shifting now, so I know I'm losing hydraulic pressure. I've ordered a new master cylinder. I'm curious to see if switching it out will affect this slipping issue. Seems like it could be a result of the pressure in the clutch's hydraulic system jumping oddly as my failed master cylinder works through its range of motion.

Thanks for checking in! I'll update if I find anything new, or if my ujoints fall out from under the truck any time soon.
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Old Jun 26, 2013 | 07:04 PM
  #43  
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From: the great Maine wilderness
Originally Posted by Ocell
Man, you're so attached to that left nut!

I've been meaning to update here. I've still got the slip. I have all sorts of new play and pops and jerks with the rear locker now, so it's harder to feel the slip all the time but I can tell it's still doing it.

I couldn't find anything wrong with the ujoints, but I'm still not going to rule then out.

My clutch master cylinder has been leaking. It's getting rough shifting now, so I know I'm losing hydraulic pressure. I've ordered a new master cylinder. I'm curious to see if switching it out will affect this slipping issue. Seems like it could be a result of the pressure in the clutch's hydraulic system jumping oddly as my failed master cylinder works through its range of motion.

Thanks for checking in! I'll update if I find anything new, or if my ujoints fall out from under the truck any time soon.
Your master is leaking? O boy... I may have to give up lefty after all....

J/K... that wouldnt cause slipping... just make it harder to shift....

Let us know....

Last edited by Team420; Jun 26, 2013 at 07:06 PM.
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Old Jul 17, 2013 | 05:57 AM
  #44  
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From: Kenna, WestVirginia
Any updates on this. You replace the clutch yet?
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Old Jul 18, 2013 | 08:17 PM
  #45  
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Well, I've been driving the truck around, and took it on a hard wheeling trip with no issues at all. It still does the "slip" but nothing has broken. I haven't replaced the clutch.

Now I'm thinking it's actually my engine mounts shifting. I replaced the stock (and torn) engine mounts with these Energy Suspension units. I also did it right before I noticed this "slipping" feeling. I thought maybe the solid mounts were exposing a problem that the old soft and torn mounts were hiding. But maybe they're actually the cause.

https://www.yotatech.com/forums/f123...mounts-232595/



Now I remember that the tabs for the bolts are slotted. The bolts must be shifting in the slots when the engine is under torque.

So, sorry for all the drama. Hopefully it's just the mounts shifting and will never cause a problem.

Last edited by Ocell; Jul 18, 2013 at 08:22 PM.
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Old Jul 22, 2013 | 02:26 PM
  #46  
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From: Hammond, LA
tighten them up and let us know. cause i am still curious if i was wrong or right. cause you know, it always feels good to be right.
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Old Jul 22, 2013 | 02:28 PM
  #47  
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From: Austin, TX
Yeah, I already tightened them up. I don't see a way to prevent it.
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Old Jul 23, 2013 | 01:18 AM
  #48  
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Do you have a body lift?
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Old Jul 26, 2013 | 02:47 PM
  #49  
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No, no body lift.
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Old Jul 26, 2013 | 03:22 PM
  #50  
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From: the great Maine wilderness
Originally Posted by Ocell
Well, I've been driving the truck around, and took it on a hard wheeling trip with no issues at all. It still does the "slip" but nothing has broken. I haven't replaced the clutch.

Now I'm thinking it's actually my engine mounts shifting. I replaced the stock (and torn) engine mounts with these Energy Suspension units. I also did it right before I noticed this "slipping" feeling. I thought maybe the solid mounts were exposing a problem that the old soft and torn mounts were hiding. But maybe they're actually the cause.

https://www.yotatech.com/forums/f123...mounts-232595/



Now I remember that the tabs for the bolts are slotted. The bolts must be shifting in the slots when the engine is under torque.

So, sorry for all the drama. Hopefully it's just the mounts shifting and will never cause a problem.

Pop the hood, and get a buddy to get in and start letting off te clutch while in gear, while you watch the motor & mounts. You should see any movement...
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Old Jan 26, 2014 | 06:44 PM
  #51  
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Have you solved the problem yet?
I am watching this also because I am having pretty much the same symptoms, but I have an automatic trans.
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Old Jan 29, 2014 | 01:00 PM
  #52  
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From: Austin, TX
No, I haven't fixed it. It's gotten worse, but nothing's broken yet.
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