Tug test is not a check for connection, it is a brake check

Discussion in 'Experienced Truckers' Advice' started by scoobertdoo, May 3, 2021.

  1. GreenPete359

    GreenPete359 Road Train Member

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    33AEF33D-4DAC-47AA-B6AF-93343F258494.jpeg
    so how do you find this during a pre trip?
     
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  3. Dockbumper

    Dockbumper Road Train Member

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    Time to retire that beast and send it to the scrapyard!
     
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  4. Wespipes

    Wespipes Heavy Load Member

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    You do both! Visual test and a tug test!
     
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  5. tscottme

    tscottme Road Train Member

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    Both a tug test and a visual jaw & gap test only suggest a good connection.

    A typical tug test is useless if the load is heavy unless you tug very hard.

    At least a half-dozen times I've almost dropped a trailer that was resting on the fifth wheel plate and jaws closed. If you try to hook a trailer that is slightly higher than it should be and you are off-center when you back into it, your kingpin can force the jaws closed but they will open when you pull forward.

    Anyone that has ever had a trailer not latch, no matter how hard you back into it, is often going to look appropriately hooked but not be good to get on the road.
     
  6. God prefers Diesels

    God prefers Diesels Road Train Member

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    My fifth wheel doesn't even have jaws. It has a bar that slides behind the kingpin into the other side of the fifth wheel. When it's locked, it's locked.
     
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  7. Inderjit

    Inderjit Light Load Member

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    I had a fifth wheel refuse to lock on a trailer once after two tries I pulled ahead
    to have a look. There was a flat metal ring the kind that holds a flat Teflon lube
    disc in place squished around the pin. The last truck to pull that trailer must have
    had enough wear on the jaws to let them close.
     
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