Optimus 200P pump tube stress cracked?

Discussion in 'Fettling Forum' started by Matti Kucer, Feb 17, 2021.

  1. Matti Kucer

    Matti Kucer Sweden Subscriber

    Offline
    Joined:
    Mar 4, 2018
    Messages:
    224
    Location:
    Sweden
    Ever seen a crack like this? I havn't.

    When fettling a Optimus 200P it was impossible to build preassure. The NRV in good working order. Found that the pump tube was cracked.

    Regards Matti

    IMG_20210217_054316.jpg
     
    Last edited by a moderator: Feb 17, 2021
  2. presscall

    presscall United Kingdom Subscriber

    Offline
    Joined:
    Jan 3, 2011
    Messages:
    547
    Location:
    Lancashire, UK
    Only on a Burmos 96 (kerosene stove) pump tube.

    John
     
  3. MYN

    Offline
    Joined:
    Feb 28, 2018
    Messages:
    1,962
    Location:
    Malaysia
    Nope. Are you going to repair it? Or perhaps even make a new one?
     
  4. Fireexit1

    Fireexit1 United Kingdom Subscriber

    Offline
    Joined:
    Jun 13, 2020
    Messages:
    793
    Location:
    Brighton UK
    Brass is susceptible to age hardening. Is is possible to get brass tube of the correct diameter to replace it ?
     
  5. Matti Kucer

    Matti Kucer Sweden Subscriber

    Offline
    Joined:
    Mar 4, 2018
    Messages:
    224
    Location:
    Sweden
    I'm going to try soldring it. First i'll drill two holes to stop further crack.

    I have from other lantern, but not correct diameter.
     
  6. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

    Offline
    Joined:
    Nov 28, 2010
    Messages:
    11,183
    Location:
    Shetland Islands UK..
    Yes, I had a Tilley PL-53 pump which had the same problem.
     
  7. Fireexit1

    Fireexit1 United Kingdom Subscriber

    Offline
    Joined:
    Jun 13, 2020
    Messages:
    793
    Location:
    Brighton UK
    In the past I have had sucess finding seamless brass tubing at model engineering suppliers. Good luck !
     
  8. george United States

    Offline
    Joined:
    Nov 8, 2011
    Messages:
    2,894
    Location:
    USA
    I've never seen a pump tube crack like that before... :-k
     
  9. Matti Kucer

    Matti Kucer Sweden Subscriber

    Offline
    Joined:
    Mar 4, 2018
    Messages:
    224
    Location:
    Sweden
    Hi again!

    Tonight I drilled two holes. Used my Dremel tool to clean the crack and finally soldered it. Next step will be to even out the surface of the tube.

    Regards Matti
    Collage 2021-02-17 22_27_27.jpg

    IMG_20210217_215035.jpg
     
  10. Mackburner

    Mackburner United Kingdom Founder Member Subscriber

    Offline
    Joined:
    Sep 10, 2010
    Messages:
    6,402
    Location:
    Hertfordshire
    It happens. I have had two Tilley pump tubes crack like that. Not always that easy to diagnose either especially with a fixed pump. It's rare but just something to be aware of when any pump doesn't work. ::Neil::
     
  11. Matti Kucer

    Matti Kucer Sweden Subscriber

    Offline
    Joined:
    Mar 4, 2018
    Messages:
    224
    Location:
    Sweden
    Yes, there was no preassure build up at all. It was when I filled water into the tank I noticed it
     

Share This Page