2022 Kenworth T680 suspension

Discussion in 'Experienced Truckers' Advice' started by Sgt Trucker, Oct 11, 2021.

  1. Sgt Trucker

    Sgt Trucker Bobtail Member

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    What would the normal suspension pressure gauge reading be on this truck, at 34k lbs ? Only has 53k miles, and it handles like doo doo. Trying to figure out why. Essentially a new truck. T680s are usually pretty stable.
     
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  3. snowwy

    snowwy Road Train Member

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    You'll have to get 34 on your drives and find out.

    Not every truck reads the same.

    I've been driving the same truck for 8 months now. It reads higher then what it started out at.
     
  4. Sgt Trucker

    Sgt Trucker Bobtail Member

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    Practically every truck I've driven in the last 27 years has shown right around 60 psi at 34k lbs. This truck shows about 50 psi. I don't think it's a radically new design from what I can see. There has to be a reason for this bad handling.
     
  5. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Doo doo handling is a pretty broad definition.

    Need more specifics of the doo.
     
  6. Sgt Trucker

    Sgt Trucker Bobtail Member

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    Specifically, it handles sloppy. Too much pitch and sway. Some wheel hop on the drive axles. Handles like the truck is overloaded, but it's not.
     
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  7. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Is the steering OK?
     
  8. Sgt Trucker

    Sgt Trucker Bobtail Member

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    I can control it. Just a bit sloppy. All the steer axle components look good. Only possibility I see there is shocks. They put cheap ones on at the factory.
     
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  9. Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Steering would be my guess. Have a 3 axle done on it. $180. Money well spent.
     
  10. Midwest Trucker

    Midwest Trucker Road Train Member

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    50 sounds correct on the gauge. Also, I second a 3 axle alignment. Sometimes depending how it’s off I’ll notice the 680 feels a little “tippy”. That’s not normal or how it’s supposed to feel.
     
  11. SteveScott

    SteveScott Road Train Member

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    My 2019 T680 with a reefer at 34,000 pounds on the drives reads about 60 on the gauge. I have 31,500 on them right now and it's reading 55. That's with my 5th wheel slid all the way back which doesn't handle as well, but I know my steers are legal with 34 on the drives.
     
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