Fifth Wheel binding

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Steve from hutch, Dec 23, 2019.

  1. Steve from hutch

    Steve from hutch Medium Load Member

    I moved my fixed fifth wheel 6" and now when I tighten the saddle down the plate is really stiff.

    Checked for rocking when loose no rock, tighten three bolts on the right side and it is stiff?

    Steve
     
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  3. spyder7723

    spyder7723 Road Train Member

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    Are you sure you don't have scaling built up under the saddle? Certain you drilled the new holes exactly right?
     
  4. Steve from hutch

    Steve from hutch Medium Load Member

    Not sure what is going on, I am going to pull it of in the AM. Think I will make some shims maybe 14 gauge ? The frame and the angles are even?

    Steve
     
  5. spyder7723

    spyder7723 Road Train Member

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    For what it's worth when I slid mine back a foot I had the same issue. Pulled it back off and beat all the rust and scaling off with a needle gun, bolted it back down and the plate started pivoting like normal again.
     
  6. Steve from hutch

    Steve from hutch Medium Load Member

    Thanks,

    I will give it a try,
     
  7. SmallPackage

    SmallPackage Road Train Member

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    Try this. Has worked lots of times.
    Loosen all bolts back up. Tighten in criss cross type pattern in four different torque stages.
    1) hand tight to set bolt holes.
    2)50 ftlbs
    3) 100
    4) 160
    Rock table after each bolt to seat in.
     
  8. spyder7723

    spyder7723 Road Train Member

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    That's a given when doing pretty much anything.
     
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  9. SmallPackage

    SmallPackage Road Train Member

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    Not everyone knows that. Ive seen plenty of guys tighten one side at a time with an impact. Binds it all up.
     
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  10. zinita17601

    zinita17601 Road Train Member

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    Said the guy who knows everything.
     
  11. Axe217

    Axe217 Bobtail Member

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    I didnt know that.
    Not something that was taught lol
     
    SmallPackage Thanks this.
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