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Pete 389 driveline

Discussion in 'Peterbilt Forum' started by Bigted, Nov 20, 2020.

  1. Nov 20, 2020 #1
    Bigted

    Bigted Bobtail Member

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    2020 Pete long hood 389. Vibrated from the get go. Finally saw a possible reason. Rear drive line is not aligned u-joint wise ... not timed.

    In the past I have driven older trucks and experienced vibration because the drive line was installed with the joint not timed ... she had a real vibration till they were aligned properly.

    Dealer tells me these new trucks have the drive line about 40 degree off for longer u-joint life.

    Anybody out there experienced this. Or heard of this?
     
    Bigted, Nov 20, 2020
    Bigted, Nov 20, 2020
    #1
    D.Tibbitt Thanks this.
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  3. Nov 20, 2020 #2
    AModelCat

    AModelCat Road Train Member

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    AModelCat, Nov 20, 2020
    AModelCat, Nov 20, 2020
    #2
    pushbroom and D.Tibbitt Thank this.
  4. Nov 20, 2020 #3
    D.Tibbitt

    D.Tibbitt Road Train Member

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    @JonJon78 didnt u have a similar problem with ur rig?
     
    D.Tibbitt, Nov 20, 2020
    D.Tibbitt, Nov 20, 2020
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  5. Nov 20, 2020 #4
    not4hire

    not4hire Road Train Member

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    not4hire, Nov 20, 2020
    not4hire, Nov 20, 2020
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  7. Nov 20, 2020 #5
    pushbroom

    pushbroom Road Train Member

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    Interaxle out of phase is correct. Nothing wrong with that. Started in 2012 ish.
     
    pushbroom, Nov 20, 2020
    pushbroom, Nov 20, 2020
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  8. Nov 20, 2020 #6
    AModelCat

    AModelCat Road Train Member

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    Really? That's a new one. Never heard of that before.
     
    AModelCat, Nov 20, 2020
    AModelCat, Nov 20, 2020
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  9. Nov 20, 2020 #7
    Bigted

    Bigted Bobtail Member

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    Yep thats what they told me.

    Havin a hard time not feeling like they tryin to sell a load of crap.

    At 64, ... gonna just run the crud outta it and if it fails, WARENTY.
     
    Bigted, Nov 20, 2020
    Bigted, Nov 20, 2020
    #7
  10. Nov 20, 2020 #8
    Short Fuse EOD

    Short Fuse EOD Road Train Member

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    Interesting. I noticed that looking underneath the truck the other day. I’m glad you posted this because now I feel like it is fine.
     
    Short Fuse EOD, Nov 20, 2020
    Short Fuse EOD, Nov 20, 2020
    #8
  11. Nov 20, 2020 #9
    JonJon78

    JonJon78 Road Train Member

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    I've got a 2020 389 and had the vibration issue. Mine started somewhere around 50k miles. Felt like something was gonna come through the floor board directly underneath my feet.

    The driveline angles were off.

    Dealer didn't mention anything to me about the 40 degree deal you're talking about though....

    Mine was in the shop for 2 days, haven't had any problems since...137k miles now.
     
    JonJon78, Nov 20, 2020
    JonJon78, Nov 20, 2020
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  12. Nov 22, 2020 #10
    Bigted

    Bigted Bobtail Member

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    I guess I have not gotten used to being the R&D dept. Seems like WE should be getting paid.

    I have determined that I will "drive it like I stole it".

    I had my carrier bearing on the front drive line fail at around 30K miles. Sure glad nobody told me what a pain breaking these trucks in would be.
     
    Bigted, Nov 22, 2020
    Bigted, Nov 22, 2020
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