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truck riding rough..

Discussion in 'Ask An Owner Operator' started by fenster164, Mar 25, 2019.

Page 1 of 4
  1. Mar 25, 2019 #1
    fenster164

    fenster164 Bobtail Member

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    May 10, 2018
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    I have a 2014 freightliner cascadia..I replaced shocks and levling ...my truck runs so rough dont know what to do next..??...any help??
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #1
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  3. Mar 25, 2019 #2
    adayrider

    adayrider Road Train Member

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    Did you set leveling valve at right height? There is a measurement to set at.
     
    adayrider, Mar 25, 2019
    adayrider, Mar 25, 2019
    #2
    flood Thanks this.
  4. Mar 25, 2019 #3
    fenster164

    fenster164 Bobtail Member

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    May 10, 2018
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    the leveling valve is pre set from freightliner...I told them to replace it and still a problem
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #3
  5. Mar 25, 2019 #4
    Ridgeline

    Ridgeline Road Train Member

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    Did you check your cab shocks and air bags?
     
    Ridgeline, Mar 25, 2019
    Ridgeline, Mar 25, 2019
    #4
    KB3MMX and PE_T Thank this.
  7. Mar 25, 2019 #5
    fenster164

    fenster164 Bobtail Member

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    May 10, 2018
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    air bags are hard as a rock on cab..
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #5
  8. Mar 25, 2019 #6
    flood

    flood Road Train Member

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    Again have them check the RIDE HIGHT

    This adjustment IS NOT done with the leveling valve it is with the length of the rod from the leveling valve to the suspension or where the rod connects to the suspension there's an adjustment in there somewhere to change the ride height

    1/2" to low and the bags are to soft and rides like ####.
    1/2" to high and the bags are to hard and it rides like ####

    And the ride hight is not the same on all trucks. Mine should be 7 1/2" (+ - 1/4"). I have mine set at 7 3/4"
     
    flood, Mar 25, 2019
    flood, Mar 25, 2019
    #6
    KB3MMX and AModelCat Thank this.
  9. Mar 25, 2019 #7
    fenster164

    fenster164 Bobtail Member

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    May 10, 2018
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    ok how do I measure it
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #7
  10. Mar 25, 2019 #8
    fenster164

    fenster164 Bobtail Member

    28
    3
    May 10, 2018
    0
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #8
  11. Mar 25, 2019 #9
    fenster164

    fenster164 Bobtail Member

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    May 10, 2018
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    I feel every bumb from front to back of suspension...I hit a bump so hard my fridge flew across my cab...ugh
     
    fenster164, Mar 25, 2019
    fenster164, Mar 25, 2019
    #9
  12. Mar 25, 2019 #10
    Rideandrepair

    Rideandrepair Road Train Member

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    Again there is a specific height for them as well. Usually the suspension height valve has 2 bolts on valve that the arm attach to. 1 fixed and 1 slotted. If not sometimes the mounting bolts for the valve to the frame can be loosened and adjusted. Main thing is to get the proper spec from dealer mechanics. Mine for instance is 2 5/8” from top of spring stop to bottom of frame. On front drive axle.
     
    Rideandrepair, Mar 25, 2019
    Rideandrepair, Mar 25, 2019
    #10
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