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2001 FLD 120 Vibration

Discussion in 'Freightliner Forum' started by lciambotti1, Sep 28, 2017.

  1. Sep 28, 2017 #1
    lciambotti1

    lciambotti1 Light Load Member

    117
    22
    Mar 6, 2015
    0
    A vibration started a few weeks ago. I attributed it to an alignment issue and bad tires. It continued to get worse. I had the alignment done, 10 new tires. Vibration still there (starts about 50 MPH and continues, fairly bad). Checked ride heights. Down to 2 inches. Called Freightliner and they said the ride height should be 2 9/16ths. Adjusted and went for a ride. Vibration starts at 55, not as bad as it was and I can run out of it at 71 MPH). Why would the ride height change, and is 2 9/16ths high enough? I seen to be out of adjustment on the leveling valve rod. We checked for metal in the tranny and rears. Also checked to make sure the power divider was working. Any suggestions?
     
    lciambotti1, Sep 28, 2017
    lciambotti1, Sep 28, 2017
    #1
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  3. Sep 28, 2017 #2
    samcperez

    samcperez Light Load Member

    71
    61
    Nov 1, 2016
    0
    U-joints,Carrier bearing,kingpins,wheel bearings and or adjustment??If your leveling valve adjustment is way off it changes your driveshaft angle and may cause a vibration and usually will wipe out a u-joint and or carrier bearing in short order.Engine and or transmission mounts?Lots of things to check
     
    samcperez, Sep 28, 2017
    samcperez, Sep 28, 2017
    #2
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