What is this plug on our freightliner?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LakenT, Feb 20, 2023.

  1. LakenT

    LakenT Bobtail Member

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    We recently bought a cascadia 113 from ryder used truck sales. I believe this truck was used to haul tripple food distriputing trailers such as sysco/usa foods. I have noticed this secound plug is on the truck. What is this plug used for?
    Truck plug 2.jpg Truck Plug.jpg
     
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  3. North Pole Nightmare

    North Pole Nightmare Heavy Load Member

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    Some have a separate plug for non abs trailers.
     
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  4. Magoo1968

    Magoo1968 Road Train Member

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    If you don’t plan on using the rear plugs or airlines I’d suggest getting them removed .. it’s just extra places for air leaks and electrical shorts …
     
  5. North Pole Nightmare

    North Pole Nightmare Heavy Load Member

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    Looks like there's a pintle hook and air line connections there also.Probably set up to hook up a dolly directly to the tractor to be able to move it.
     
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  6. kwswan

    kwswan Road Train Member

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    The yellow is for a extra cable to run extra trailer accessories. Lights, dump valve, lift axle, etc.
     
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  7. ‘Olhand

    ‘Olhand Cantankerous Crusty

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    That what I’d normally think.,,but it’s on the rear frame of tractor
    I’m quite sure North Pole is correct....it’s for a pigtail to pull a dolly
     
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  8. JoeyJunk

    JoeyJunk Road Train Member

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    I got that auxiliary plug on my tractor. Need to remove all that stuff.
     
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