Leaking air at push fitting from tank.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by BlackThought, Oct 20, 2017.

  1. BlackThought

    BlackThought Medium Load Member

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    Jul 22, 2014
    Memphis,TN
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    Not an audible leak but produces bubbles when sprayed with soapy water. With the push fittings do I need to replace just the fitting and retrim the hose. Or just get a new fitting? Don't want to get bit in the ### by this in the future. Or can I keep the fitting and retrim the line


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  3. tk40176

    tk40176 Light Load Member

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    Apr 8, 2010
    Brooklyn, NY
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    Replace with a brass compression fitting instead of half brass / plastic quick connect.
     
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  4. uncleal13

    uncleal13 Road Train Member

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    Apr 9, 2009
    Humboldt, Sk
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    I found that the way the fitting clamps the hose, it wears the plastic over time so that the hose becomes loose. You can first try just pulling out the hose and cut off about 1/4” and re-insert into fitting. Assuming you have enough hose.
    If it doesn’t work, then change the fitting.
     
  5. boneebone

    boneebone Road Train Member

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    Mar 13, 2009
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    There's a O-ring inside the fitting.

    You can use a needle nose plier and pull the brass outer release ring out and use a metal L-hooked pick to take out the old O-ring.

    Get a matching replacement O-ring, reinstall and reattach the airline.

    There is no need to trim the air line as the leaking is caused by the O-ring getting dried out and hardening, causing the air line not to seal properly.
     
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  6. me myself and I

    me myself and I Heavy Load Member

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    Oct 5, 2009
    vernon hills,Il
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    The fitting will cost you 15 bucks. Get a pivoting one. If you want do do it on the cheap replace o ring. And trimming the line if possible wont hurt
     
  7. Ridgeline

    Ridgeline Road Train Member

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    Michigan
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    Replace it with brass, don't screw around with plastic.
     
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