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Kingpin won’t lock in to release

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Greggg, Sep 22, 2020.

Page 1 of 2
  1. Sep 22, 2020 #1
    Greggg

    Greggg Light Load Member

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    Jun 30, 2018
    0
    Hey everyone

    my fifth wheel won’t lock when I pull the handle or every once in a while it will. An adjustment ?
    Just wondering what are usual issues ? Don’t usually need to uncouple but I had this load to Walmart.. took so long.. that.. was annoying
     
    Greggg, Sep 22, 2020
    Greggg, Sep 22, 2020
    #1
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  3. Sep 22, 2020 #2
    Razorwyr

    Razorwyr Road Train Member

    2,284
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    Jul 27, 2010
    Meridian, Mississippi
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    has the locking jaw been greased or the moveable parts lubed up? Anytime mine has been stuck i just had to spray a little PB Blaster on it and on the spring/arm and it worked fine.
     
    Razorwyr, Sep 22, 2020
    Razorwyr, Sep 22, 2020
    #2
  4. Sep 22, 2020 #3
    LtlAnonymous

    LtlAnonymous Road Train Member

    6,084
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    Dec 23, 2016
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    There are certain types of handles that my company has that lock into the open position. Maybe that could be an issue?

    Every once in awhile I would back against the kingpin, pull forward for my tug test, and freely roll forward. Always a nice surprise. Lol
     
    LtlAnonymous, Sep 22, 2020
    LtlAnonymous, Sep 22, 2020
    #3
  5. Sep 22, 2020 #4
    Greggg

    Greggg Light Load Member

    161
    35
    Jun 30, 2018
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    Yeah I HAR that done during an oil change about 2-3 months ago, I was actually almost starting to think this might be the issue but I guess not then huh ?

    It’s not a major issue for me right now so I haven’t taken a lotta time on it but when I did I was having a hard time looking at how the mechanism works and what might be messed up how I could fix it maybe
     
    Greggg, Sep 22, 2020
    Greggg, Sep 22, 2020
    #4
  7. Sep 22, 2020 #5
    Greggg

    Greggg Light Load Member

    161
    35
    Jun 30, 2018
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    I have an older truck, my fifth handle just usually locks outwards when locked now it just springs back in
     
    Greggg, Sep 22, 2020
    Greggg, Sep 22, 2020
    #5
    LtlAnonymous Thanks this.
  8. Sep 22, 2020 #6
    Razorwyr

    Razorwyr Road Train Member

    2,284
    2,824
    Jul 27, 2010
    Meridian, Mississippi
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    oh, I misunderstood..... it DOESNT lock open, I misread your original post and thought you couldn't get it to close
     
    Razorwyr, Sep 22, 2020
    Razorwyr, Sep 22, 2020
    #6
  9. Sep 22, 2020 #7
    Greggg

    Greggg Light Load Member

    161
    35
    Jun 30, 2018
    0
    yeah doesn’t lock open
     
    Greggg, Sep 22, 2020
    Greggg, Sep 22, 2020
    #7
  10. Sep 22, 2020 #8
    Roger.B1240

    Roger.B1240 Bobtail Member

    44
    66
    Jun 29, 2020
    Dallas Tx
    0
    The 5th wheel needs to be serviced ASAP.

    A good Shop can often fix it in a routine pm
     
    Roger.B1240, Sep 22, 2020
    Roger.B1240, Sep 22, 2020
    #8
  11. Sep 22, 2020 #9
    Greggg

    Greggg Light Load Member

    161
    35
    Jun 30, 2018
    0
    Ok thanks, lately I only had to time to get my truck and trailer greased at a loves they didn’t really have a clue. Thanks for true advice
     
    Greggg, Sep 22, 2020
    Greggg, Sep 22, 2020
    #9
  12. Sep 23, 2020 #10
    '88K100

    '88K100 Road Train Member

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    Aug 23, 2020
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    Take truck to a shop before you lose your wagon
     
    '88K100, Sep 23, 2020
    '88K100, Sep 23, 2020
    #10
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