Tilley 246 Mixing Tube fix/repair

Discussion in 'Fettling Forum' started by Sledge, Aug 17, 2026 at 11:49 PM.

  1. Sledge Australia

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    Have just disassembled another lamp I aquired and the mixing tube and its holder have been damaged some what. Just wondering what the safest way there is to make it round again (see pics)and remove the dent from the mixing tube?
    At the moment I can not unscrew it and my thought was to apply some heat and make the brass somewhat supple and gently tap with a light hammer to try and make it round so as I can unscrew it at least. Then try and remove the dent from the mixing tube by making a wooden plug in a similar shape as the end of the tube a tap out the dent?
    Thoughts?
    Am I going about this all wrong?
     

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  2. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Judging by your photos that burner is knackered.
     
  3. Sledge Australia

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    @JEFF JOHNSON
    I thought as much lol but I thought I would ask the question. Oh well.
     
  4. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Rough lanterns and parts are a good source for spares.

    Sledge
     
  5. podbros

    podbros United Kingdom Subscriber

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    i remember dismantling burners and made special tools to clamp parts to prevent damage.. but because the air tube threads are very fine and quite delicate its best not to undo them as the years of heating and detritus that builds up on them contrives to damage those threads as you try to unscrew em?

    occasionally you do come across some that haven’t been used much and are removable but always best to leave in situ wherever possible..

    where the dome or mixing chamber part screws into the burner, as you noticed, the burner body can go a vaguely triangular shape.. if the dome can be removed then a small amount of exhaust paste can help to seal or even copper grease, if the gap isn’t too large

    this burner has had a hard life but was probably still being used..

    IMG_9463.jpeg

    the air tubes have drooped noticeably..

    IMG_9464.jpeg
     
  6. Sledge Australia

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    @JEFF JOHNSON
    I think this lantern has become one of those lol
    @podbros
    I actually did a search and found this post and found it very informative.
    I actually managed to remove the mixing tube yesterday and get it into some kind of round by pushing a socket of similar size into it and tapping it with a light hammer.
    I then tried it with the burner? All was going fine until I tried to unscrew the injector tube and it snapped off lol.
    I now know better for next time doh!
    Thanks for the advice guys, a lesson learned.
    Rob
     
  7. podbros

    podbros United Kingdom Subscriber

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    ah, well it was the best one to practice on :thumbup:
    tilley did do replacement injector tubes for a while but as you see the burner body deforms before they wear out !
    there are a few threads regarding this ;
    CPL.. its an amazing resource :thumbup::thumbup::thumbup:

    at least you have a spare mixing dome!
    cheers
    pb

    p.s. interestingly the air tubes on the vapalux/bialaddin burners are very similar to tilley types and they seem to fare better?
    a bit off topic :-#
     
  8. JonD

    JonD Subscriber

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    This has seen overburn. The tank pressure drops and then the flame pops up into the burner dome. It melts everything up there. Costly mistake since a lot of bits need to be replaced.

    20190705_104932.jpg 20190705_105344_opt.jpg
     

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