amount of pull needed for a 5th wheel handle

Discussion in 'Experienced Truckers' Advice' started by buddyd157, Apr 10, 2019.

  1. buddyd157

    buddyd157 Road Train Member

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    ok, like the subject line states...

    does anyone have an idea on the approximate pulling poundage (force) a driver faces, when he is pulling the 5th wheel locking handle??

    is it 10 pounds, 20 pounds, 30, ..??

    i been trying to explain to someone it takes a certain amount of "pull" to unlock, but unless i can say near the exact amount, he won't get the idea.

    thanks to all in advance
     
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  3. Cam Roberts

    Cam Roberts Road Train Member

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  4. buddyd157

    buddyd157 Road Train Member

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    and i would believe that's what it takes, in all my years, i only knew some that were easier than others to pull, even with a pulling tool.

    i would "figure" that someone who works out with weights, would have a somewhat close idea?
     
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  5. gokiddogo

    gokiddogo Road Train Member

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    Seems to vary. Even with my well maintained, new equipment. Usually it's very easy. Sometimes needs a very good pull. I am not in good shape at all and I can always manage. The key is the J bar. If I had to do it by hand it has proven impossible before (on previous equipment, as company guy). Proper tool for job is the key.
     
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  6. 25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    Depends on how well it works, our newer trucks are much easier than the older ones where you also usually have to lift and pull. If 10 to 20 doesn't do it, you may need to back up slightly to take off the tension holding the jaw shut.
     
  7. buddyd157

    buddyd157 Road Train Member

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    right, on my now former truck, it was an easy pull, but i still used the tool.

    but some, dear god...you needed a Sherman tank for help.

    so i'll tell this guy about 15 pounds worth of pull, as a general idea.
     
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  8. Lepton1

    Lepton1 Road Train Member

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    It also depends on the type of 5th wheel: Jost, Fontaine, etc. There are 5th wheels that require a minimum 20 hours a week in Gold's Gym, then others can be pulled by a three year old.
     
    Last edited: Apr 11, 2019
  9. Moosetek13

    Moosetek13 Road Train Member

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    And it also depends on the temperature.
    The colder it is, the more effort needed to get it out because the grease is very stiff.
    And when it is very cold you will have to keep it pulled out for several seconds to let things slide into place.
     
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  10. Cam Roberts

    Cam Roberts Road Train Member

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    Yeah but it’s an interesting topic you bring up though. Even though, 2 different 5th wheels will yield different results. Some trucker on here must have a scale. It would be interesting to see what the results would bring nonetheless.
     
  11. Farmerbob1

    Farmerbob1 Road Train Member

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    I would say that on an undamaged fifth wheel, the minimum force needed to unlock a fifth wheel is about 30 pounds.

    That is if it is perfectly aligned and well lubricated. The upper limit goes into the hundreds of pounds, to the point where you have to adjust the truck itself before you can release the fifth wheel.

    I have two fifth wheel pullers. One is a short, light puller that I always try to use first. The second is about 2 feet longer and has a much more solid handle. I am a 270 lb man with good upper body strength. Every now and then I cannot get enough leverage to release a 5th wheel lever with a 4 foot puller and all my body weight, even if I jerk at it.
     
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