I recently was able to pick up a very lightly used 413G. The tank will not hold pressure at all. I have a new leather cup on order that will come in the next couple of days however have put some oil on the original in the meantime. When I turn the pump knob both clockwise it just keeps spinning and doesn't stop (same as counterclockwise but that is to be expected. Is this normal? Will the pump only lock if pressure is in the tank or should it lock even when depressurized? Thanks in advance for any help!
Have you removed the pump shaft and ascertained the condition of the existing leather and whether or not the check valve and its needle shaft are in place???
Yes. the leather was dry, as to be expected as the stove had only been used a few times and it's manufacturing date is 1974. When I pulled the shaft out and looked in with a flashlight the check valve appeared to be in place. Not sure about the needle shaft, I don't see one but I may not know what I'm looking for. I have attached a picture of down the tube as well as the shaft with the now oiled leather.
When you use it, is the central shaft screwed into the check valve? The threads looks ok although it's hard to see clearly but i cant see if the threads in the check valve are still intact. The central shaft should screw into the check valve on its own before you push the pump into the tube. Just throwing a few ideas out. Another thought, is the central shaft the correct type as there are two sizes and the smaller, narrower one definitely won't fit.
Pump cup has nothing to do with the air stem not screwing into position. Is the air stem correct sized threads to engage the C/V? Threads look wrong in your pic. You should be able to remove the air stem from the pump shaft and screw the air stem in by hand. Duane
It would appear the air stem was unscrewed the whole time. When I removed it from the pump shaft it screwed in nice and easy and now the pump shaft no longer continually spins. It still won't pressurize when the air stem is screwed in and turned counterclockwise but I suspect that is the leather cup. The new cup should be in tomorrow at which point i will install it and report back. Thanks for all the help. I tried the search feature but came up dry. This forum is a gem.
Now there are 2 reasons for lack of pressure. 1) Bad pump cup 2) Check valve ball not releasing Or both. 3) Leak somewhere else.
Leather looks fine. Spread it a bit with your fingers. Filll cap gaskets on these old things always leak. Take cap off and hold your thumb overt hole and pump
Well between screwing back in the air stem and replacing the pump cup the stove is running like new. I'm thrilled that my nearly 50 year old stove is running so well. Thanks for the help! I genuinely appreciate it.
Congrats on getting it going. That's a nice looking 413 that is running well. 413's are awesome stoves. They're much heavier duty than 425's and only 200 BTU less than the three burner 426.
Hi, @mancole , Your 413 is one of our most favorite Coleman suitcase stoves! That model can do it all, for the most part, and in a package that is smaller than the 426 stoves. Yours looks wonderful, and ready for action! Thanks for sharing it with us, and have fun with it! Very well done! Take care, and God Bless! Every Good Wish, Doc
I'm thrilled with the find. It was barely used. Definitely not a museum piece but I intend to use it for camping. I grew up with Coleman stoves and have very fond memories. The 413 was exactly what I was looking for. I also like the grate of the G model, though would have been happy with any 413.
