How to connect shop air to air up truck?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Thetrashnoob, Apr 1, 2021.

  1. Thetrashnoob

    Thetrashnoob Light Load Member

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    Trying to help a friend who just bought a tri axle dump truck, and after sitting for a few hours it’s losing a lot of its pressure. The primary air valve has a tire fill port, is there a better place to hook up air to air up the truck? The air dryer?
     
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  3. lester

    lester Midwest's #1 Feed Hauler

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    I have Valves and quick connects on my air tanks to get air or fill tanks with air. I did have some trouble with my air governor on the truck after doing that a bunch but my shop air was at 160ish psi. Proper way would be taking hose of air compressor and putting shop air in there I suppose
     
    stillwurkin Thanks this.
  4. p608

    p608 Road Train Member

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    Why not just fix the air leak?
     
    Roger McG Thanks this.
  5. Goodysnap

    Goodysnap Road Train Member

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    When checking the complete system, I connect direct to the discharge line right at the compressor. #10 male flare with a shutoff valve and your shop hose nipple is all it takes for most older stuff.
     
  6. lester

    lester Midwest's #1 Feed Hauler

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    That's what he's trying to do
     
    stillwurkin and Dave1837 Thank this.
  7. tommymonza

    tommymonza Road Train Member

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    I had to do this last spring when my truck was pinned against the wall in the polebarn and I knicked a battery cable hooking up the batteries blowing the ECM fuse under the hood. .



    I pulled a drain plug off one of the air tanks and went down to Ace hardware and bought a male fitting of the same size that had a female thread to insert a male npt fitting in.
     
    stillwurkin Thanks this.
  8. DUNE-T

    DUNE-T Road Train Member

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    Connect to air governor on the compressor
     
    tommymonza Thanks this.
  9. Mattflat362

    Mattflat362 Road Train Member

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    I have a female right behind my cab but I have never used it and I have never looked to see where it goes. I can take pics and get details tomorrow but by then you will probably be all squared away...
     
  10. tommymonza

    tommymonza Road Train Member

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    Pics of Female?
     
  11. p608

    p608 Road Train Member

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    Sorry, I misunderstood, I thought he was trying to bypass the problem.
     
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