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Air tank fitting size question.

Discussion in 'Ask An Owner Operator' started by crucar1800, Nov 19, 2019.

  1. Nov 19, 2019 #1
    crucar1800

    crucar1800 Light Load Member

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    Sep 21, 2012
    0
    Hi. I am trying to find out the size of the DOT tub and the size of the air fitting that would fit into these three ports. One tank is the front one and the other the rear tank. Does anyone know the size of these three items? Thanks for your help! air tank2.jpg airtank1.jpg
     
    crucar1800, Nov 19, 2019
    crucar1800, Nov 19, 2019
    #1
    SimpleTrucker Thanks this.
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  3. Nov 19, 2019 #2
    Judge

    Judge Road Train Member

    12,854
    84,390
    Mar 19, 2014
    Arkansas
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    5/8 elbow quick connect. Little over $30 each
     
    Judge, Nov 19, 2019
    Judge, Nov 19, 2019
    #2
  4. Nov 19, 2019 #3
    starmac

    starmac Road Train Member

    6,639
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    Apr 11, 2019
    Fairbanks Ak
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    It is hard to say just looking at the picture, but I am thinking the air line sizes are 5/8 on the black one and 1/2 on the green one, tank fittings will either be 3/8 pipe or possibly 1/2 pipe.
     
    starmac, Nov 19, 2019
    starmac, Nov 19, 2019
    #3
    mhyn Thanks this.
  5. Nov 19, 2019 #4
    PE_T

    PE_T Road Train Member

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    Jul 12, 2017
    Texas (trucking since 02/2013)
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    What I personally do is take a picture of it and show it to the parts guy at the dealer along with the last six of my vin. If you’re trying to buy a generic fitting, you would want to take it off, and take it with you.
     
    PE_T, Nov 19, 2019
    PE_T, Nov 19, 2019
    #4
  7. Nov 20, 2019 #5
    mhyn

    mhyn Road Train Member

    4,255
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    Dec 29, 2008
    Northridge, CA
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    hahaha Cascadia started leaking ))))
    I have changed all of them. The thread on air tank is 1/2 NPT. Tube sizes are different. 5/8, 1/2, 3/8,... measure diameters before buying the fittings
    I have Installed Velvac DOT brass compression fittings on air tanks.
     
    Last edited: Nov 20, 2019
    mhyn, Nov 20, 2019
    mhyn, Nov 20, 2019
    #5
    crucar1800 and PE_T Thank this.
  8. Nov 20, 2019 #7
    crucar1800

    crucar1800 Light Load Member

    186
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    Sep 21, 2012
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    Lol...yes. it is hard to keep up with leakcadia.
     
    crucar1800, Nov 20, 2019
    crucar1800, Nov 20, 2019
    #7
    mhyn, Concorde and PE_T Thank this.
  9. Nov 20, 2019 #7
    Concorde

    Concorde Road Train Member

    4,344
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    Jun 29, 2016
    West Melbourne Florida
    0
    Don’t feel bad, my Kenworth is the same.
    Fix one leak and two more show up the next day.
     
    Concorde, Nov 20, 2019
    Concorde, Nov 20, 2019
    #7
    PE_T and mhyn Thank this.
  10. Nov 20, 2019 #8
    mhyn

    mhyn Road Train Member

    4,255
    4,510
    Dec 29, 2008
    Northridge, CA
    0
    yes men. Freightliner is using that crape push and lock fittings made by SMC Pneumatics. They start leaking after 3-4 years....
     
    mhyn, Nov 20, 2019
    mhyn, Nov 20, 2019
    #8
    PE_T Thanks this.
  11. Dec 26, 2019 #9
    crucar1800

    crucar1800 Light Load Member

    186
    71
    Sep 21, 2012
    0
    *uptade* the ports hole are 1/2 inch.
     
    crucar1800, Dec 26, 2019
    crucar1800, Dec 26, 2019
    #9
    feldsforever Thanks this.
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