I picked up a 502, looks good but the NRV/check valve is stuck, never stripped a Coleman in my life so any tips on freeing it?
Hi rik well done on your 502 a fantastic stove i havae fallen in love with the one i got, i am all so in the same boat i have not got a a great deal of experiance with them i have studdied Johns(presscalls) brilliant thread in the fettlers master class where he left it out in the rain but theres nothing on the pump NRV removal i would all so like to know how to replace it every thing else i will be fine
I noticed that most colemans stoves, the company uses a gasket sealer that hardens hence I have had a few colemans that really was hard to strip but eventually got it off. Nice catch Richard hope to see it up and running. Ron
They are great, I have one already off a kind forum member complete with cook pot/lid/handle. They are a real workhorse stove and I want to get this one up and running to use camping.
To be honest Rik i like the 502 the most out of all the coleman stoves and i am sure one of the best they produced, and as you know like you my one was given to me by a very kind member Not to worry Rik you will have it up and running for camping i am sure help will be along very shortly
This removal tool's worked every time. PT me with your address Rik and I'll lend it to you. I'm guessing that'll be cheaper than posting me the tank, but that's the other option ... Coleman check valve removal tool Cheers, John
Yup, I bought one and have used it on many of my Coleman products, stoves and lanterns. EXCELLENT tool but if you don't do much with Coleman products, a bit pricey by the time you figure in the postage.
The tool is the best way to remove the check valve as you can screw into it and it wont slip. If you are in a bind and no tool available you can spray a lube into the valve let it sit for some time and use a flat head screw driver wrapped in duct tape until it fits into the pump valve opening (diameter) and while pressing down hard turn the screw driver at the same time. It works but takes some time to get use to. I've restored so many Coleman's that i should just buy the tool finally FYI Coleman has two different sizes for this check valve and some of these tools have both threads BTM
One other note with stuck check vales sometimes you can fix a stuck check valve without actually removing it. If when you open the valve you cant pump (too much Pressure to push down when pumping) it's because the ball is stuck. A little spray and i use a kabob stick (long wooden stick with a point on it) and poke the opening and sometimes the ball will loosen. I then use a carb cleaner to soak and finally clean with a paper towel squished into pump, with long nose pliers turn the paper or cloth and scrub. I've probably fix 5 or 6 check vales just like this. Good luck BTM
Hi Rik, This is taken from a post that (Mike) Flivver had done a while ago. Hi: There should be nothing holding the check ball no spring ,rubber, leather etc. It should be loose, free to rattle. If so blow through it from the back side, if flow is restricted it is working fine. The only thing that causes these valves not to function is dried incorrect fuel type that intraps or inhibits ball movement. In that case soak with "lacquer" thinner. Do not under "any" circumstance try to open valve to remove ball. In repairing hundreds of Coleman stoves I have "never" had to remove or replace the NRV (they are indestructible) unless it was destroyed by someone trying to remove it. Coleman stoves almost "never" need any but the most basic disassembly to return them to perfect operating order. Such as removing fuel cap to replace gasket or oiling pump leather. NRV/ check valves do not have to be removed, just fill with "lacquer" thinner and let soak. I am continuously "horrified" when I read about someone doing major surgery on a Coleman for a 30 second fix. Coleman's that have been used with "proper" fuel just don't need maintenance excepting maybe a yearly drop of oil on the pump leather of older models that use leather. I once dug up a battered/rusted Coleman stove out of the mud in a western Oregon junkyard, washed the mud off, filled the tank and cooked hotdogs after the yard owner bet me it would never run again. I got the parts I had picked out for free! Mike... This is the whole post if you are interested. https://classiccampstoves.com/posts/157118
I think I've found my next stove! I like the look of that, it looks to have a generator that would be easy to strip and clean. Must keep an eye out for one of those.
I have a CV removal tool coming in the post from Dan on the Coleman Collectors Forum. If all else fails you can use a screw extractor to hoick out the old one, which ruins it. New check valves arent that expensive.
