Full fettle of a Primus No.30

Discussion in 'Fettlers Master Class' started by Tony Press, Oct 11, 2016.

  1. Tony Press

    Tony Press Australia Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    6,610
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    Here is a 1921 Primus No.30 (1 pint) stove with a silent burner.

    This is a good example of the condition many old stoves arrive in, so I decided to record all of the things I had to do the make it work.

    As it came:

    IMG_0820.jpg


    1. First remove all the fittings except the fixed legs.

    1.1 I used the 17mm odd-shaped spanner which fits the burner perfectly to take the burner from the riser.
    IMG_9380.jpg


    1.2 To remove the NRV, I first soaked the NRV in penetrating oil for a day by filling the pump tube with the oil. I placed the NRV removal tool in a vise and, putting firm downward pressure on the tank, turned the tank anticlockwise to free the NRV.
    IMG_9438.jpg

    IMG_9439.jpg

    1.3 The NRV would not come out even though it was unscrewed completely (too much old fuel holding it in the bottom of the pump tube), so I used a pipe cleaner to get it out.
    IMG_9440.jpg



    2. The next job was to get rid of the excess plumbers solder. Having large amounts of solder does nothing except look ugly.

    IMG_0821.jpg

    The task here is to get the solder off without solder running and sticking to places it shouldn't; and not unsoldering other parts of the stove.
    IMG_0822.jpg

    IMG_9429.jpg


    2.1 I used "permanent marker" to paint around the excess solder so that the melted solder would not run and stick to the tank. I filled the tank with water to cool the other soldered pieces.

    IMG_9430.jpg


    2.2 I heated the excess solder with a propane torch and wiped the melting solder off with a damp cotton cloth.

    IMG_9431.jpg

    IMG_9432.jpg

    2.3 The very thin layer of solder remaining was then cleaned up with a very, very fine emery paper and a Dremel with a brass wire brush. The little ball of solder on the filler cap tube was ground off with a fine Dremel finishing wheel.

    IMG_9441.jpg

    IMG_9443.jpg

    IMG_9445.jpg


    2.4 The excess solder on the filler cap was removed in a similar manner.
    IMG_9444.jpg


    3. The NRV was taken apart using a drill chuck and an NRV tool (the drill chuck is to stop the end of the NRV being broken by using a screw-driver).
    IMG_9449.jpg

    IMG_9448.jpg

    IMG_9450.jpg
    Of course the spring was replaced, as was the pip.


    4. The inside of the burner was cleaned by heating with a propane torch and pumping air through the burner. I found that the Coleman lamp pump I had did a good job. Note: the nipple (jet) has been removed for this task.
    IMG_9451.jpg

    5. The pump was disassembled and the washer taken from the filler cap. All loose parts were then cleaned in "Marine Clean" (but any good detergent-base engine cleaner will do).
    IMG_9570.jpg

    IMG_9426.jpg

    IMG_9427.jpg


    6. Here are all the cleaned pieces and their replacement washers and seals:

    IMG_0956.jpg

    IMG_0960.jpg



    7. The tank, having lost the uniformity of its patina after removing the excessed solder, was polished by hand with Autosol. It will be lacquered with VHT high temperature gloss clear and baked at 94C.
    IMG_0951.jpg


    8. The stove was reassembled with its new seals and washers. Seals and washers by @The Fettlebox ; pump cup by @sefaudi.



    And then it was lit!

    IMG_9610.jpg

    IMG_9611.jpg

    IMG_9612.jpg

    IMG_9613.jpg

    IMG_9614.jpg

    IMG_9616.jpg

    IMG_9618.jpg

    IMG_9621.jpg



    The Reference Gallery post of this stove is here:

    https://classiccampstoves.com/threads/primus-no-30-1921.33925/

    Cheers

    Tony
     
    Last edited by a moderator: Jul 13, 2017
  2. janders

    janders Subscriber

    Offline
    Joined:
    Aug 11, 2014
    Messages:
    668
    @Tony Press
    Excellent walk through!:clap::thumbup:

    Bookmarked to be visited again!
     
  3. sefaudi

    Offline
    Joined:
    Oct 19, 2004
    Messages:
    620
    Very nice job Dear Tony.
    Congrats...
     
  4. presscall

    presscall United Kingdom SotM Winner SotY Winner Subscriber

    Offline
    Joined:
    Aug 25, 2009
    Messages:
    9,538
    Fine job Tony.

    John
     
  5. ROBBO55

    ROBBO55 Subscriber

    Offline
    Joined:
    Oct 27, 2014
    Messages:
    1,085
    Location:
    Somersby, New South Wales, Australia
    @Tony Press
    Excellent work and a well detailed post. :clap::clap:
     
  6. JonD

    JonD United Kingdom Subscriber

    Offline
    Joined:
    Aug 18, 2012
    Messages:
    286
    Location:
    Hertfordshire, England
    I love that first start in years aurora in green. Beautiful.
    I won't look that good at 95 no matter how much fettling I receive.
     
  7. shagratork

    shagratork United Kingdom Moderator, R.I.P. Subscriber

    Offline
    Joined:
    Aug 9, 2005
    Messages:
    9,641
    Location:
    Durham, N.E. England
    Excellent step-by-step fettle.
    Thank you for taking the time and effort to document it so meticulously.
     
  8. Etherman

    Etherman Subscriber

    Offline
    Joined:
    Mar 9, 2015
    Messages:
    378
    Superb transformation. Nice to see your old stove looking classy!!
     
  9. IvanN

    IvanN United States Subscriber

    Online
    Joined:
    Jan 10, 2016
    Messages:
    1,605
    Location:
    N.E. Oregon
    of course the stove is now beautiful, and the step by step is even better! Thanks for the careful documentation. The permanent marker is a great tip. Thanks, Ivan
     
  10. Funfundfunfzig

    Offline
    Joined:
    Dec 10, 2015
    Messages:
    475
    Another masterful job Tony! You have a great talent to be able to see and reveal the beauty that lies hidden under the years of wear and tear!

    Those green Phoenix flames are truly memorising and are the reward for the effort that goes into producing them!

    I don't have any stoves with an agent's name plate. The provenance from the Brandts plate makes it even more special!
     
  11. Robert Bruce

    Robert Bruce SotM Winner Subscriber

    Offline
    Joined:
    Jul 22, 2007
    Messages:
    1,468
    Location:
    Springrange NSW Australia
    Great work Tony, it looks and functions just fantastic.

    Cheers
    Rob
     
  12. Matty

    Offline
    Joined:
    May 30, 2015
    Messages:
    317
    Tony,

    In this photo that you took and I reproduced here, where does the washer go that is next to the NRV?

    TonyFettle.jpg
     
  13. shagratork

    shagratork United Kingdom Moderator, R.I.P. Subscriber

    Offline
    Joined:
    Aug 9, 2005
    Messages:
    9,641
    Location:
    Durham, N.E. England
  14. Matty

    Offline
    Joined:
    May 30, 2015
    Messages:
    317
    Trevor,

    Thanks mate.

    I have removed perhaps 4 NRV's and none have had a washer. I thought that perhaps the washer went on the pump cap. That seemed as handy as flyscreens on the doors of a submarine.

    Thanks again Trevor and thanks to Tony for the fettle.
     
  15. Tony Press

    Tony Press Australia Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    6,610
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @Matty

    I use The Fettle Box HDPE NRV washers most of the time; but lead ones are fine as long as you don't overtighten them.

    My experience is that old stoves that have never been serviced, often come without a washer. It is these (which have metal to metal contact) that are the hardest to unscrew.

    Cheers

    Tony
     
  16. Trojandog

    Trojandog United Kingdom Subscriber

    Offline
    Joined:
    Feb 7, 2011
    Messages:
    2,291
    Location:
    East Sussex
    Well done Tony. I'd like to nominate this for the 'Fettlers Master Class' section.

    Terry
     
  17. Matty

    Offline
    Joined:
    May 30, 2015
    Messages:
    317
    @Tony Press

    When you say, old stoves that haven't been serviced, usually don't have the washer - does that mean that washers weren't part of the factory build and are in fact an aftermarket part?
     
  18. Tony Press

    Tony Press Australia Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    6,610
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @Matty

    I am sure that some stoves I've refurbished never had a washer. It appears (to me) they left the factory with the NRV tightly screwed to the end of the pump tube with no washer fitted.

    Most, of course, have washers.

    A couple of weeks ago I was working on an old Australian Aladdin twin burner kitchen stove. Both the NRVs had no washer; I refitted them with lead washers. [The washers were peculiar in another way, but that's a different story that requires photos].

    Cheers

    Tony
     
  19. Tony Press

    Tony Press Australia Subscriber

    Offline
    Joined:
    Jun 8, 2013
    Messages:
    6,610
    Location:
    Stinkpot Bay, Howden, Tasmania, Australia
    @Trojandog

    Thanks. I'm flattered.

    Cheers

    Tony
     
  20. shagratork

    shagratork United Kingdom Moderator, R.I.P. Subscriber

    Offline
    Joined:
    Aug 9, 2005
    Messages:
    9,641
    Location:
    Durham, N.E. England
    Terry, I agree entirely.
    Done!