I only have this one Phoebus, so I have no way to compare. The old gasket was toast, so I can't compare that either. I got a kit to replace gaskets and all is good except for 1 thing. I put the filler cap gasket on, and cannot get any threads of the pump to catch on the tank. The new gasket is .122 inches (3.1 mm) thick. The pump screws onto the tank easily without the gasket. Ken in NC (I did a search of the site, but too many results for me to sort through)
Hi Ken - is that the one from the kit I supplied? Mine are 3mm, same as the originals I have on hand (I have a few original Phoebus kits) & have been tested on my 625's. I've just looked at one of my 625's again & reckon the washer would have to be around 6mm to stop the threads engaging as the recess is deep & fully threaded. Is the washer seated correctly? Mine has around 3-4mm clear thread showing. I guess there could be other variants so a picture &/or dimensions would be useful. I'd gladly send you out a replacement washer in 2mm Viton foc.
Thanks, I measured the depth where the washer goes, it is .155 (3.95 mm). Yes, the washer is seated all the way, and slides on easily. I did push very hard, and careful to not strip the threads, and got 3/4 turn before it was tight as I would go with my hand. I did a water test, and the seal leaked air. I can take pictures tomorrow. ROSS, If you are going to send a washer, let me buy some others while we are at it. More, tomorrow. late here. Ken
Any chance you could send/post a pic of the overall stove & a close up of the pump/cap please? I'm wondering if there is an earlier, gone-hard seal already in there from a previous owner.
Hi, here are some photos of the Enders service set which Sefa sells: https://classiccampstoves.com/threads/20506
Thanks George - just goes to show. I wasn't aware that Ender kit was compatable with the Phoebus 625. I guess I'm right that there may be other variants. Ken - If this looks more suitable for your particular Phoebus than the kit I supplied please let me know & I'll issue a refund & modify my listing.
Hi Ross, I don't think that these kits are interchangeable only that these are available... It also shows how useful photos are in illustrating a problem and possible remedies. Apologies for any confusion I may have caused. Best Regards, Kerophile.
Here is an overview of the bench with stove parts layed out, and a close-up attempt at the seal area. The seal area has some black residue, but there isn't another washer in there. The seal area has obvious machined reliefs/steps at the edges. Ken
Ross, No need for refund. The other parts are good, I have only used the Safety Valve PIP and will use the Filler Cap Gasket. I suppose I would like to have spares of those around. Ken
Hi, I have just recovered my NATO military Phoebus 625 stove from storage. and taken some photos and measurements of the pump assembly, WITH THE WASHER IN Place: The overall height of the fuel cap is approximately 10mm. The internal depth I would estimate at approx. 9mm With the washer in place there is approx 5mm of free thread. Is it possible that you are trying to put a washer on top of an existing washer? I hope this helps. Best Regards, Kerophile.
No, I scrape hard brass at the bottom. I will go out and take another picture. Thank you very much, George. Ken
Mine 'without' washer looks like yours, George. It looks like yours has brass at the bottom of the threads. Here are more pics. May be redundant.
Hi Ken, Lets be quite clear; The washer you wish to replace is the filler cap washer. This fits within the filler cap and encircles the pump-tube. I can assure you that I had a soft, fuel resistant, washer in place when the photos were taken as I prodded it with a wire when measuring the length of exposed thread (approx 5mm). It looks like the overall height of your cap is the same as mine at approx 10mm. If you are hitting "brass and solder" at 3.95mm from the outside surface you must have a very thick brass top cap on you filler cap! I am at a loss; the inside surface of your filler cap looks very black to me, not at all like brass or solder. I hope we can get to the bottom of this... Best Regards, Kerophile.
Yes, it is blackened. But, I assure you, humbly, that it is very hard. There is a small scratch in the bottom surface. The black is residue that has not come out with acetone or citric acid solution (boiled too). Question: Could an old washer be that hard? I have the same thought, that it is a thick cap, but there may be a 'washer' made of brass in there. That would mean de-soldering to remove it. (LAST RESORT) When I heated it, I got a bubble of solder, and I was able to 'pull' it out without it sticking to the threads. Any washer would have burned wouldn't it? I do appreciate any tips. Ken
Looks like a shallow cap by design or error but the 1.5 & 2mm washers I'm going to send you will get the thing going. Fettle on!
Hi Ken, hold off on the heat. On the subject of "aged" washers; they do become harder than Hell (think sold carbon) Typically they need to be chipped out or heated to high temperature to be able to remove them. I believe it is still possible that you have one of these hardened washers lodged in the pump camp... When faced with such a problem I use a small spike, like a sharpened screwdriver, to split the old washer and dislodge the old washer pieces, one at a time. This does seem more likely than a shallower filler cap. Best Regards, Kerophile.
I did get to the bottom of the filler cap. I 'chiseled' with a very small screwdriver and broke the 'washer' into little pieces. That is the first I have seen like that, i had read accounts here of that condition though. Thanks to you George for your patience and assistance. Thanks to Ross for his generosity. Here are pics taken this morning, after last nights late night fettling. This means a flame later today. The other washers are good or replaced, and the water/pressure test passed. I washed the inside with BeeBees and soap, rinsed with water then alcohol, and it is drying now. Ken in NC
