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Thread: Heavy haulers, how does this happen?

  1. #1
    TomB985 is offline Board Regular TomB985 is a trusted source of information and would probably pick up your dry cleaning. TomB985 is a trusted source of information and would probably pick up your dry cleaning.
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    Default Heavy haulers, how does this happen?


  2. #2
    Windwalker's Avatar
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    There are two ways I know of that it could happen.
    1. The kingpin broke off. Yes, I've seen that happen before.
    2. The fifthwheel let go. Either something out of adjustment, or something in the fifthwheel broke. I've seen that happen too.
    Destroy the cities...
    and they will rebuild them.
    Destroy the farms...
    and grass will grow in the streets of the cities.

    Destroy the economy of the blue-collar worker...
    and grass will grow in the executive offices.

    The bill has come due.
    ( R E T I R E D , and glad of it)


  3. #3
    GMAN's Avatar
    GMAN is offline Administrator Board Icon GMAN is a distinguished poster and probably helps little old ladies across the street. GMAN is a distinguished poster and probably helps little old ladies across the street. GMAN is a distinguished poster and probably helps little old ladies across the street. GMAN is a distinguished poster and probably helps little old ladies across the street.
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    Just imagine if there had been a car passing when this happened?

  4. #4
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    I saw one not too long ago. I came over a hill and saw about 4 escort vehicles and an Anderson tractor parked on the shoulder of the East bound side. He had the jeep hooked to the tractor but no fifth wheel on it. I thought to myself "Gee, thats odd. I wonder where..." And that is when I saw the top of the tower sticking above the shoulder of the road. That is alot of weight on the pin and the fifth wheel.
    Don't trust anybody. Especially that guy in the mirror.

  5. #5
    Walking Eagle's Avatar
    Walking Eagle is offline Senior Board Member Walking Eagle is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    I had the fifth wheel on my jeep come off one time but the load and trailer were heavy enough so's it only slid about 6 inches. Tore up the road real good though.
    The Alaska building method. Measure with a micrometer. Level with a laser. Cut with an axe.

  6. #6
    Heavy Duty is offline Board Regular Heavy Duty is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    May have broke a pin in the trailer steering, makes for a quick trip to the ditch.

  7. #7
    Windwalker's Avatar
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    Not something I ever thought about before. I've hauled both, oversize and overweight. Used the same tractor and fifth-wheel for all of it. For the equipment that hauls more than 150,000 pounds, the kingpins and fifth-wheels are the same, aren't they? What is the pull rating of the fifth-wheel, and the kingpin? Do we just assume that the tractor can not pull hard enough to break them?

    I-10, last week (in either MS or AL) was shut down because of a load with all axles under it. Didn't get a good enough look to see just what it was, but all westbound traffic was being detoured because of it. I saw the load, but do not remember seeing a tractor hooked to it.

    Is it possible that for those "SUPER-LOADS", we need to have fift-wheels and kingpins re-designed and beefed up for the load? The only thing I have seen increased is the support against gravity, not the pulling part of it.
    Destroy the cities...
    and they will rebuild them.
    Destroy the farms...
    and grass will grow in the streets of the cities.

    Destroy the economy of the blue-collar worker...
    and grass will grow in the executive offices.

    The bill has come due.
    ( R E T I R E D , and glad of it)


  8. #8
    Walking Eagle's Avatar
    Walking Eagle is offline Senior Board Member Walking Eagle is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    It's not normally the fifth wheel or pin that fails it is what they are fixed to. When I lost mine it was the plate that fifth wheel was on came off, bad welding and not large enough bolts.
    The Alaska building method. Measure with a micrometer. Level with a laser. Cut with an axe.

  9. #9
    specialkay is offline Member specialkay is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    There is different ratings for fifth wheels available. A common upgrade is a 70 ton fifth wheel. I think that is a pull rating and the standard one is around 35 or 40 tons.
    Tough times don't last..Tough people DO!!! Trojan S.C.D.

  10. #10
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    Windwalker is offline Board Icon Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street.
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    Quote Originally Posted by specialkay View Post
    There is different ratings for fifth wheels available. A common upgrade is a 70 ton fifth wheel. I think that is a pull rating and the standard one is around 35 or 40 tons.
    And, with this fifth-wheel, are trailers still interchangeable? Or do they also take a larger kingpin?
    Destroy the cities...
    and they will rebuild them.
    Destroy the farms...
    and grass will grow in the streets of the cities.

    Destroy the economy of the blue-collar worker...
    and grass will grow in the executive offices.

    The bill has come due.
    ( R E T I R E D , and glad of it)


  11. #11
    Walking Eagle's Avatar
    Walking Eagle is offline Senior Board Member Walking Eagle is an unknown poster at this point.  Don't let him/her around power tools just yet.
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    For most fitfh wheels you can pull any trailer, the upgrade in pulling is just in stronger jaws. When you get into super heavy hauler the trailer they pull is matched to the tractor then it will have a different king pin setup.
    The Alaska building method. Measure with a micrometer. Level with a laser. Cut with an axe.

  12. #12
    Windwalker's Avatar
    Windwalker is offline Board Icon Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street. Windwalker is a distinguished poster and probably helps little old ladies across the street.
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    Quote Originally Posted by Walking Eagle View Post
    For most fitfh wheels you can pull any trailer, the upgrade in pulling is just in stronger jaws. When you get into super heavy hauler the trailer they pull is matched to the tractor then it will have a different king pin setup.
    I see. I've pulled things but never had to spec one out. It was always with a company truck. I never pulled anything more than the standard 80,000 with my own truck. Oversize, but not over weight.
    Destroy the cities...
    and they will rebuild them.
    Destroy the farms...
    and grass will grow in the streets of the cities.

    Destroy the economy of the blue-collar worker...
    and grass will grow in the executive offices.

    The bill has come due.
    ( R E T I R E D , and glad of it)


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