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Clunking

Discussion in 'Freightliner Forum' started by Twonads, Oct 5, 2017.

  1. Oct 5, 2017 #1
    Twonads

    Twonads Bobtail Member

    4
    0
    Oct 5, 2017
    0
    I'm taking off from a stop and I hear a clunking from under my truck. The clutch has a delay in it when I shift through the gears a second or two I got to wait to step on the accelerator
     
    Twonads, Oct 5, 2017
    Twonads, Oct 5, 2017
    #1
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  3. Oct 5, 2017 #2
    ShooterK2

    ShooterK2 Road Train Member

    5,533
    89,469
    Dec 14, 2012
    Oklahoma
    0
    Park the truck and get underneath. Twist driveshaft back and forth while using your ears and eyes to locate the source of the slack, if possible. Probably gonna be a U-joint, but could be in the trans or rear end.
     
    ShooterK2, Oct 5, 2017
    ShooterK2, Oct 5, 2017
    #2
  4. Oct 5, 2017 #3
    boneebone

    boneebone Road Train Member

    2,233
    2,268
    Mar 13, 2009
    0
    Check u-joint, center bearing mount, transmission mount and engine mount.
     
    boneebone, Oct 5, 2017
    boneebone, Oct 5, 2017
    #3
  5. Oct 7, 2017 #4
    Schnot

    Schnot Bobtail Member

    26
    9
    Jul 8, 2011
    Ringtown, PA
    0
    Sounds like classic u joint symptoms to me.
     
    Schnot, Oct 7, 2017
    Schnot, Oct 7, 2017
    #4
  7. Oct 7, 2017 #5
    x1Heavy

    x1Heavy Road Train Member

    34,017
    42,104
    Mar 5, 2016
    White County, Arkansas
    0
    U Joint. One of them at least. There should be two.

    Check them things right now. Make #### sure you are parked, chocked etc. engine off etc.

    There is only one other set of clunking I have ever heard from a truck and it's usually fatal in the rear ends. But look at the U Joints first.
     
    x1Heavy, Oct 7, 2017
    x1Heavy, Oct 7, 2017
    #5
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