Hello everyone, I noticed that our gallery is desperately short in SVEA15, so I decided to make my contribution with this magnificent specimen : This is a stove found in one of those flea markets that are organized in the villages of France every weekend in spring and summer. It is, as we say here: "dans son jus" ("marinated in its own juice" ??). In short : sweaty and smeared with gras of cuisine, religiously preserved. The inscriptions are barely legible... but I bet that under the thick layer of grease, lies the Cinderella of stoves...
Many a stove I've acquired 'dans son jus' Nikos. In fact, I've got plenty of 'jus' from my own meals on a fair number too. Svea's with an tank-mounted non-return valve are a particular favourite of mine, but if the small-bore tube from the end of the pump tube to the nrv is holed it's a heck of a job to fix. You really must have a go at firing it up! John
Hi ! Oh sure I will do my best to restore it. My morning job was to clean the jet and make a new leather pump. That was the easy part....now I'd need some explanations about that intriguing external NRV.... Here's the inside of the pump : nothing to grab... Under the bolt, a spring and something totally immobile, emerging from the tank. Some traces of human intervention suggest an earlier repair. A lead washer seems to lodge in the pit of the bolt. At this point, what am I suppose to do ?
Hi, 1. Don't do anything from the inside of the pump. 2. The central part is the valve, that is pushed down by the spring: It should come out and expose the pip, which most probably needs replacement. If you cannot pull it out with pliers, try to drip some citric acid around it. Another option is gentle heating (don't melt the solder). Yonadav
Thank you Yonadav and Andrew ! The little thing finally came after I spay some lubricant on it. I changed the pip with a new one. And the NRV-pump works fine !! Andrew, you sacrificed a stove for educational purpose You deserve the prize of comradeship. Pictures are excellent and explain the whole thing by themselves. Thank you !! The external NRV is very handy. Why didn't this system spread over all the stove production ? Is there any side issue ? Any clue regarding the date of manufacture ? Somewhere between 1915 and 1930 ? The last thing : the burner is completely clogged. I scratched a bit inside and I took out a shovelful of carbon. I know what I have to do.....
Well, everything has been fixed. Except the burner that is still clogged. I did more than 20 heat and quench, hammer tapping and so on... it eventually vomited a good tablespoon of carbon but it's still clogged. I think I will have to cut the tubes, clean the inside and braze them back. Temporarily, I've put a brand new Azurea burner. Here are some pictures of the cleaning : Flame shot in a next post.
Very smooth first test. Nice and steady flame. Few pics of Cinderella waking up after a long long sleep : The rod of the pump is made of steel. I think this part is not original because the tip was not even threaded just deformed with a hammer so the nut can not go. I threaded it. The filler cap had a nice red leather washer which looks very old but maybe not original.
Hi Nikos, I think the burner tubes are still partially blocked so the flamelets are sitting very close to the burner apertures, resulting in the burner cap running red hot. You could try the original Primus method of clearing the tubes...Remove the jet, heat the burner tubes with a blowtorch, whilst passing air through the tubes. The petroleum coke should ignite and burn off. https://classiccampstoves.com/threads/10978 Best Regards, Kerophile.
Thank you, i didn't know about this device and technic. I'll try to make something similar and will post the result. The svea burner is still completely clogged, now way to use it. On the picture, I changed it for a spare one.
