Tilley leak test

Discussion in 'Fettling Forum' started by Handi-man, Jul 18, 2018.

  1. Handi-man Australia

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    My red tilley is leaking from around the pump shaft , around the knob ........ I replaced the pump seals . What is wrong here ? Is this normal to lose pressure around the pump shaft ? BTW Test done without any fuel in the fount , maybe the fuel is needed to cover the end of the pump ?

    leak.jpg
     
  2. Anthony

    Anthony Australia Subscriber

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    Some times for no apparent reason things just don't work the first time. Some times if you take them apart and put them back together it works fine.

    Make sure there are no bits of crud in there obstructing the seal and that the spring is pushing straight and it should be OK

    Keep in mind old stock seals can some times go too hard to do the job.
     
  3. Handi-man Australia

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    I just did another test with some fuel in the fount and the result is: No leaks ! Except for raw kero pouring down the vapouriser as you would expect.
     
  4. bp4willi

    bp4willi Germany Subscriber

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    I believe tilleys have a shut off valve. So there should be no rinse of kero from vaporizer.
    or you missed to close it. ( needle up)
     
  5. Tony Press

    Tony Press Australia Subscriber

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    @Handi-man

    @bp4willi is correct. If the valve in the bottom of the control cock is operating correctly, and the control wheel is turned fully to the right, there should be no flow of fuel through the jet in the vapouriser. The pricker also acts as a secondary fuel stopper.

    But... quite often the control cock has crud or something is not quite aligned properly and fuel will deep through.

    Cheers

    Tony
     
  6. Handi-man Australia

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    Thanks for that . Seems I have a leaking control cock . I discovered this morning raw kero had flowed down the outside of the vapouriser around the fount and onto the floor

    Another query. What is the preferred or safer method of turning off a Tilley ? Depressurise by undoing the pump or using the control cock to stop the fual flow ?
     
  7. Tony Press

    Tony Press Australia Subscriber

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    @Handi-man

    The orthodox method is to use the control cock.

    Of course, if your Tilley is incontinent, releasing the pressure via the pump is fine.

    Cheers

    Tony
     
  8. David Shouksmith

    David Shouksmith India Founder Member

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    In theory, using the control cock should be sufficient given that this will seal the foot valve and also the jet.

    In practice, however, I'd use the control cock to extinguish the lantern and then release pressure, particularly if the lantern's not going to be used for some time. In that circumstance, I'd also drain the fuel from the tank and store it in an airtight container with as little free air as possible...
     
  9. Sellig33

    Sellig33 France Subscriber

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    I always do as David (use the control cock to extinguish the lantern and then release pressure), on all my lamps.
     
  10. Carlsson

    Carlsson Sweden Admin/Founder Member

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    Yes, I think it's a good idea to keep any lamp un-pressurised when not in use.
    It's only in some old Coleman lamps, which I often use, I might let the pressure remain.
    Those positive shut off valves are more reliable.
     
  11. bp4willi

    bp4willi Germany Subscriber

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    I always depressurize the lantern for extinguishing.
    regardless what lantern.

    this minimizes wear of jet/needle.
     
  12. Sellig33

    Sellig33 France Subscriber

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    And the overflow of kerosene in case of temperature rise. This has happened to me on my Petromax 500 CP and on a stove.
     

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