How to remove old coating inside a Coleman Peak 1 550B ?

Discussion in 'Fettling Forum' started by OutdoorStefan, Jul 29, 2021.

  1. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Hi,

    I have on Coleman from Nov 1990.
    Since 1995 until now approx. 100 ml unleaded gasoline stood in this stove.

    It seems that the inside coating is not complete anymore (some parts shaking inside the stove).

    What is the beast/easiest way to remove this old coating?
     
  2. Sternenlicht

    Sternenlicht Subscriber

    Offline
    Joined:
    Aug 27, 2012
    Messages:
    356
    Location:
    Hürtgenwald
    Hej Stefan,

    Why do you want to remove the coating?
    But maybe the same as fir removing rust helps, fill the tank with sand or small screws or sth similar and shake it. You also could add some acetone.

    Ciao, Bastian
     
  3. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Hi Basian,
    thanks!
    Reason for removing: Some coating parts are already inside and I think it is better to remove all....
     
  4. David L

    David L Subscriber

    Offline
    Joined:
    Apr 4, 2010
    Messages:
    196
    Location:
    Skokie, Illinois USA
    Are you sure that the loose parts are not just dried fuel flakes?
    The remainder of the dried gunk may simply come out by doing what Bastian suggested.

    David L
     
  5. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Hi David - that is what I found inside. It looks heavier on the picture than in real.... IMG_8755.jpg
     
  6. Yun124

    Yun124 Korea, Republic of Subscriber

    Offline
    Joined:
    Aug 11, 2020
    Messages:
    172
    Location:
    Gangnam, Seoul in Korea
    Coleman Peak 1 - which model is this?
    I thought I had seen the same, so it was.
    It's better to use that stove especially fueling with a sort of gasolines, with your own parties only. Not near from the strangers or other citizens who are innocent.
    Please keep the general safety sense for everybody.
     
  7. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Hi Yun,
    sorry - I do not get what you want to tell me. Sorry. Sound like some strange Google translation....
     
  8. Yun124

    Yun124 Korea, Republic of Subscriber

    Offline
    Joined:
    Aug 11, 2020
    Messages:
    172
    Location:
    Gangnam, Seoul in Korea
    It's already enough to get all when anybody clicks the hyperlink. No need to get anything from my poor English.
    If still cannot catch what is the matter, use gtrans; english to your language, then you can get it.
     
  9. elcarlstono

    Offline
    Joined:
    May 9, 2017
    Messages:
    19
    You may want to put a magnet to that mess and see how much of it is rust. I think what Yun is trying to say is that he thinks your fount may have structural issues and is a hazard to run.
    That said, I have removed these liners before in lanterns and it is a pain. Usually the delamination is caused by rust. I'd sttart by doing some rust treatment which will further remove some of the liner . Then, what's left, do an acetone soak with a "bb dance". But those Peak stoves have an anti-spill fill spout which makes getting things out (like bb's) very difficult, so you'll likely have to remove the valve if not already done.
     
  10. BradB

    BradB United States Subscriber

    Offline
    Joined:
    Aug 21, 2013
    Messages:
    1,558
    Location:
    Central North Carolina USA
    Good advice from elcarlstono.
     
  11. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Fine. I have removed everything. I will try to do so and feedback. Thanks!
     
  12. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
  13. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    4 days bath in citric acid at 70 degree centrigrade..... Works perfect! All rust, old RUG-particles and painting/coating is removed step by step....
     
  14. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Outside I will do a new airbrush painting.

    What do you recommend how to handle inside?
    Leave it blank and fill it with white spirit?
    Or dry it and put some WD 40 inside?
    Or any other new coating?
     
  15. elcarlstono

    Offline
    Joined:
    May 9, 2017
    Messages:
    19
    Depends on how much metal was eaten by the rust. If you have significant pitting, but the tank still holds pressure (I'd do a pressure test before investing much more time), you may want to pursue a tank liner like POR-15 or Caswells. If it was just some surface rest and you still have good smooth metal inside, then yes I'd just leave it with some white gas in it. You can use denatured alcohol to help evaporate remaining water after your treatment, but flash rust is going to be a problem.
     
  16. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Here you can see the result after 4 days bath in citric acid at 70 degree centrigrade.....

    IMG_2341.jpeg

    I dried it our with a small fan:

    IMG_2335.jpeg


    an took a endoscope to look inside:

    IMG_2337.jpeg IMG_2338.jpeg

    I assembled it and put pressure on it to look for small pin holes. I found 2 by putting it under pressure in a pot filled with water - just saw some small bubbles coming up and closed them by soft soldering.... IMG_2444.jpeg

    IMG_2445.jpeg

    now we can start the final test.....
     
  17. cottage hill bill

    cottage hill bill Subscriber

    Offline
    Joined:
    Jan 8, 2011
    Messages:
    1,144
    If it was rusted enough to cause pinholes the tank is no longer safe to use. Where there is one pinhole there are a hundred waiting to break through. From the size and thickness of the rust flakes shown in your early pictures I believe that fount is compromised beyond use. Replace it. It is not worth the risk of catastrophic failure to use it. None of the coating often touted on these and other forums as rated for pressure vessels. It shouldn't be hard to replace the fount or even the whole stove. Err on the side of caution.
     
  18. OutdoorStefan Germany

    Offline
    Joined:
    Aug 18, 2020
    Messages:
    60
    Location:
    Germany Stuttgart
    Hi Hill Bill,
    thanks for your comment. What scenario could happen? Did somebody experienced it?