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?
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
Hi Basian, thanks! Reason for removing: Some coating parts are already inside and I think it is better to remove all....
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
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.
Hi Yun, sorry - I do not get what you want to tell me. Sorry. Sound like some strange Google translation....
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.
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.
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....
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?
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.
Here you can see the result after 4 days bath in citric acid at 70 degree centrigrade..... I dried it our with a small fan: an took a endoscope to look inside: 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.... now we can start the final test.....
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.