Difficulty getting 1551 to 2 kg pressure

Discussion in 'Fettling Forum' started by kephart, Aug 8, 2026 at 7:38 PM.

  1. kephart Sweden

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    I find it difficult/impossible to get my 1551 to pressurize to 2kg even after at least 60-80 strokes. Should I change pumpleather maybe? The manometer goes up to about 1,2kg. Maybe it is the manometer? The lamp is shining bright anyway. Or could it perhaps be the quick-lighter that is not working?
     
  2. Erik Leger

    Erik Leger Germany Subscriber

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    Don't stick to what the manometer says. It is not an exact measuring device but just a tool of estimation. (Indicator move to the right --> more pressure. indicator stay where it is: broken or similar pressure, indicator moves to the left: less pressure.) You may check it with a butane refueling cartridge for gas lighters. At 20°C butane will build up a pressure of 2,1 Bar.
    Your thumb will feel the pressure when pumping.

    Does the lamp work well or not is the more important question.
    Erik
     
  3. kephart Sweden

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    Thanks,
    It seems to work pretty well. There was some pulsating in the beginning though.
    I am also working on the quicklighter, bur I think I need to get a tool.
     
  4. kephart Sweden

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    Looks good to me, but hard to tell if it is reaching 500cp. 20260808_224206.jpg
     
  5. kephart Sweden

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    The pressure has also increased after 10min burning. 20260808_225403.jpg
     

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