Unusual or broken nrv

Discussion in 'Fettling Forum' started by vissertw, Oct 6, 2023.

  1. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
    I bought a 1931 Primus 1020, V on the bottom.
    I rather good shape, I was able to test it.
    Only thing was the pump leather , need to fix that.
    But the biggest surprise was the nrv, mind you, it worked fine, there was pressure and the nrv was tight.
    But look at my picture, there is no head to put the tool on in order to unscrew the nrv.
    Deep down there is a small hole, I took a bit copper tread, got it in the small hole and did feel pressure from a spring, like a normal nrv.
    Is this an unusual nrv or a broken one?

    nrv.JPG

    Regards,

    Ton.
     
    Last edited: Oct 6, 2023
  2. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
    Having a closer look, both on my picture and into the pump shaft , could it be a flat six side nut we are looking at?
     
  3. WimVe

    WimVe Subscriber

    Offline
    Joined:
    Aug 3, 2011
    Messages:
    3,544
    Guess so, was my first impression. So parts of the pump are in the tube.
     
  4. podbros

    podbros United Kingdom Subscriber

    Offline
    Joined:
    Dec 27, 2015
    Messages:
    4,105
    Location:
    .. next to the Chester & Birkenhead Rlwy
    Hmm.. this type of thing?

    1DF498EA-36FB-4233-ABC5-5DA49FCE16A3.jpeg 632AB81D-6252-4794-BFE9-BCD923808F10.jpeg

    Off an Optimus but I think it has to be similar?
     
  5. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
    No, all pieces of the pump came out, only the leather was broken.
    But I see what you mean.
    Maybe I should have a closer look.
    As I said before, everything is working fine.
     
  6. WimVe

    WimVe Subscriber

    Offline
    Joined:
    Aug 3, 2011
    Messages:
    3,544
    Yep because of the hole in the nut but what if a previous owner left some spare parts in the tube?
     
  7. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
  8. podbros

    podbros United Kingdom Subscriber

    Offline
    Joined:
    Dec 27, 2015
    Messages:
    4,105
    Location:
    .. next to the Chester & Birkenhead Rlwy
    I think so too.. they couldn’t get it out after it fell off, so after finding it worked ok they just forgot it was there?
     
  9. podbros

    podbros United Kingdom Subscriber

    Offline
    Joined:
    Dec 27, 2015
    Messages:
    4,105
    Location:
    .. next to the Chester & Birkenhead Rlwy
    Ah ja, det ar en bra plan :thumbup:
     
  10. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
    Everything ok now, the remains of an old pump came out.
    I made a very small but strong and long hook out of an old spoke from a bicycle wheel.

    I am happy!

    Ton.
     
  11. vissertw

    vissertw Subscriber

    Offline
    Joined:
    Jan 9, 2016
    Messages:
    92
    Location:
    Wormer Holland / Strömsdal Sweden
    A question about the age, this lamp has V14 on the bottom, V means 1931 but 14, would that point to the number of the week?

    Ton.
     
  12. ROBBO55

    ROBBO55 Subscriber

    Offline
    Joined:
    Oct 21, 2014
    Messages:
    4,439
    Location:
    Somersby, New South Wales, Australia
    No one has yet found the answer to that question :)
     

Share This Page