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Beckett NX-spline nut blues

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STEVEusaPA
STEVEusaPA Member Posts: 6,505
So is it me? Or has anyone else have this issue?
How do you adjust the air on a NX burner while it’s running? In theory, loosen the spline nut, adjust the head by turning the screw, right?
Should be simple enough per the instruction. But twice now I’ve noticed the spline nut cannot be loosened to allow air adjustment with the nozzle adapter connected to the fuel pump. The nut that connects them bottoms out on the spline nut, so you can’t loosen the spline nut. Doesn’t do it on an AFG.
I ended up leaving the spline nut off and using an e clip.
Am I completely missing something and having a brain fart, or is this just bad design?
Thanks
Steve

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Robert O'BrienSuperTech

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  • Steamhead
    Steamhead Member Posts: 16,889
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    I've never had a problem. Maybe the flare nut on the nozzle line has threads that are too deep.
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  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    Steve, you aren't crazy. Have to loosen both to adjust.
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    STEVEusaPA
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Steve, you aren't crazy. Have to loosen both to adjust.

    Thanks.
    Hey Beckett, can you just make the nozzle line portion with the threads 1/4" longer?

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    SuperTech
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Steamhead said:

    I've never had a problem. Maybe the flare nut on the nozzle line has threads that are too deep.

    That seems to be it too. But it seems to me to only happen on newer burners, as I don't remember this being a problem on them when I first started working on them. Maybe the whole adjustment/head mechanism is a little thicker on the newer ones?

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