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Vibration/Tremble on dump truck when driving

Discussion in 'Questions From New Drivers' started by Lightning01, Apr 18, 2020.

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  1. Apr 18, 2020 #1
    Lightning01

    Lightning01 Bobtail Member

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    Mar 7, 2020
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    Hello, I own a 1999 Mack E7-427 and there’s this vibration that it’s been having recently. We recently replaced one of the crankshaft mounts because it broke while I was on the highway. But before that, the vibration was already apparent. It’s a shaky rumble feeling (especially when loaded) kind of like driving on rough roads even though I mainly drive in even roads. I noticed that when the truck is uphill, the “rumble” or vibration is a little stronger. So just yesterday, we replaced one of the crankshaft mounts, and now the vibration/rumble seems a bit “harder” if that makes sense. When I get to around 5th and 6th, i can feel this loose F55FB885-D4CD-498D-BFE1-B52B6899961A.jpeg C38D94A3-6AFF-4412-8D02-CEE174FF279F.jpeg rumble/tremble and I can feel it a lot through my seat. It makes the inside of the cabin vibrate, things that didn’t usually shake or vibrate are now doing just that. It just feels very noisy inside the truck because of this tremble feeling. The drive is not as smooth as it was a long time ago and I want to find out what could be the issue.
     
    Lightning01, Apr 18, 2020
    Lightning01, Apr 18, 2020
    #1
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  3. Apr 18, 2020 #2
    uncleal13

    uncleal13 Road Train Member

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    Humboldt, Sk
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    Hey, at least you found it. Probably want to check that driveshaft isn’t bent too.
    At first I was thinking crankshaft damper.
     
    uncleal13, Apr 18, 2020
    uncleal13, Apr 18, 2020
    #2
    lovesthedrive Thanks this.
  4. Apr 18, 2020 #3
    HoneyBadger67

    HoneyBadger67 Road Train Member

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    I don't feel *as* bad about my own carrier bearing anymore....LoL. I'm still going to replace mine, I just don't feel as bad about it.

    @uncleal13 stevie wonder could have seen that
     
    HoneyBadger67, Apr 18, 2020
    HoneyBadger67, Apr 18, 2020
    #3
    uncleal13 Thanks this.
  5. Apr 18, 2020 #4
    x1Heavy

    x1Heavy Road Train Member

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    Mar 5, 2016
    White County, Arkansas
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    That shaft is not feeling very well. Probably bent which will get worse and it wants out of everything thats breaking loose around it.

    Your most important thought right now is that thing is in the shop and it goes NOWHERE now until the entire situation with the shaft is fixed or replaced up and down.
     
    x1Heavy, Apr 18, 2020
    x1Heavy, Apr 18, 2020
    #4
  7. Apr 18, 2020 #5
    HillbillyDeluxeTruck

    HillbillyDeluxeTruck Road Train Member

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    Mar 3, 2013
    San Antone
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    There's literally no excuse as to why a carrier bearing should have been allowed to get that bad.

    Apparently DOT doesn't do their job where you live.

    And if you let something as simple as a carrier bearing get that bad, how beat is the rest of the truck?
     
    HillbillyDeluxeTruck, Apr 18, 2020
    HillbillyDeluxeTruck, Apr 18, 2020
    #5
    Chubby Fly, AModelCat, Caterpillar Cowboy and 3 others Thank this.
  8. Apr 18, 2020 #6
    Caterpillar Cowboy

    Caterpillar Cowboy Heavy Load Member

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    Nov 11, 2010
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    Well, you got 100% of the service life out of that carrier bearing!
     
    Caterpillar Cowboy, Apr 18, 2020
    Caterpillar Cowboy, Apr 18, 2020
    #6
  9. Apr 18, 2020 #7
    Chubby Fly

    Chubby Fly Medium Load Member

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    crankshaft mount huh. It pans me that fellow owner operators know nothing about trucks. Just breakin balls a little but come on man
     
    Chubby Fly, Apr 18, 2020
    Chubby Fly, Apr 18, 2020
    #7
    Caterpillar Cowboy Thanks this.
  10. Apr 18, 2020 #8
    Caterpillar Cowboy

    Caterpillar Cowboy Heavy Load Member

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    Nov 11, 2010
    Wyoming
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    I mean, maybe they put new main caps on too was what he was talking about? Devils advocate here!
     
    Caterpillar Cowboy, Apr 18, 2020
    Caterpillar Cowboy, Apr 18, 2020
    #8
    Chubby Fly Thanks this.
  11. Apr 18, 2020 #9
    lovesthedrive

    lovesthedrive R.I.P.

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    Wow. Kind of hard to miss that if pretrip was done correctly.
     
    lovesthedrive, Apr 18, 2020
    lovesthedrive, Apr 18, 2020
    #9
    Chubby Fly Thanks this.
  12. Apr 18, 2020 #10
    Chubby Fly

    Chubby Fly Medium Load Member

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    Nov 25, 2019
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    lmao
     
    Chubby Fly, Apr 18, 2020
    Chubby Fly, Apr 18, 2020
    #10
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