Freightliner sucks over RR and potholes

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by sergk1989, Sep 9, 2019.

  1. sergk1989

    sergk1989 Bobtail Member

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    Jan 23, 2013
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    Freightliner Columbia with airliner suspension
    New tires perilli
    New shocks Gabriel

    Does anyone know a fix to this problem?
    Running bobtail and hitting bumps or rough railroad my truck feels bottomed out and everything hits hard in the interior

    With a trailer it’s a lot better but still...

    Ride height seems to be ok I get no vibration driving down the road
     
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  3. BoxCarKidd

    BoxCarKidd Road Train Member

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    Air ride cab?
     
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  4. LoneRanger

    LoneRanger Road Train Member

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    Could be leave spring bushings, im having same issue in cascadia, but I’m replaced front shocks with original freightliner, Gabriel’s suck, and will replace cab shocks next week, hopefully and then leave spring bushings.
     
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  5. boneebone

    boneebone Road Train Member

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    Did you try replacing cab mount bushings and cab shocks yet?
     
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  6. Working2party

    Working2party Medium Load Member

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    Yep, check your front cab mounts the originals don’t like rough things and like to blow out. They make an HD version. It has alittle rougher ride but they last forever. I’ve had to change all my Coronado SD’s over to the HD cause the trucks run in rough areas and the commission paid drivers just won’t slow down.

    This usually starts with a loud thump (sounds like it’s coming from the driver side, but is usually the passenger side that’s out) when hitting rough stuff. I’ve never been around one that had both out. if that’s your case, I’m not sure how it will act.
     
  7. x1Heavy

    x1Heavy Road Train Member

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    You have to take it easy on the equipment.

    The Driver absolutely decides how much damage the truck will take, if any.
     
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  8. Rideandrepair

    Rideandrepair Road Train Member

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    Yep. The passenger side usually goes bad first. Due to heat from Exaust.
     
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  9. shatteredsquare

    shatteredsquare Road Train Member

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    Where are those cab mount bushings located? I'm guessing there's 4 of them, one per corner?
     
  10. bzinger

    bzinger Road Train Member

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    Slow down ! It's a truck not an army tank .
     
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  11. shatteredsquare

    shatteredsquare Road Train Member

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    Once it gets fixed I'll save the trail braking for the bike, having fun is too expensive in these things
     
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