I have aquired a PW L13. The pump leaks and pushed fuel out around the stem. Is there a pump or kit available for them?
I don’t have the lantern at home. It is at an Amish fellas. I will get some pics the first of the week and try and figure out how to post them. What does NRV mean?
As Norman says - non-return valve. To expand on that, you can think of the NRV as being somewhat akin to the valve in a tyre - without it, or if it fails, what you pumped in will come straight back out. It's a similar situation (though slightly more complicated) in a lamp tank because it contains fuel as well as air. If the NRV fails, what leaks out depends on where the far end of the pump-tube is situated. Most pumps are angled down towards the bottom of the tank so the far end is in the fuel. It follows that fuel will leak out through the top of the pump-tube if the NRV fails. However, some pumps are horizontal and end in the air-space above the fuel. These will leak air (and a little fuel vapour) if the NRV fails - this is a safety measure. A special safety measure can be found in, for example, many Coleman lanterns - the end of the pump in the fuel has a short vertical pipe taking pumped air directly into the air-space at the top of the tank. Thus what leaks out if the NRV fails (unlikely since they're screwed shut during normal use) will be air and a little fuel vapour. This is clearly safer than having raw liquid fuel - gasoline or Coleman fuel - leaking out in proximity to a naked flame. Hope that helps...
Chester, Take a look at this thread I posted http://www.colemancollectorsforum.c...oleman-220-comparison-10038579?pid=1307645649 I used a L-13 for the Preway portion of that thread. That will give you a good overview of the valve set up. I realize that wasn't your original question, but PWs are a bit different than other lanterns. You've been given good advice above for repairing the NRV. Drop me a message if you're still having problems with your L-13.
Here are some photos of the pump from my L13. The little valve with the stem has some soft deteriorated material in the center. I am. Not sure if that is what is causing the problem.
Looks like the original pip may have been cork. Use a leather punch and some viton sheet stock and make a new one. If you're not in a hurry I've got a L-13 on the bench awaiting resurrection. I'll be making a pip for it and will make a couple for yours while I'm at it. It may be a couple weeks before I get to it though. Or, since you are in the states, go to Old Coleman Parts and order a gasket for the fuel cap and a pip for a M1950 stove. The pip should fit and you'll need a fuel cap gasket.
Thank you Reese. I need to order some stuff from old Coleman parts for my 220 slant. It sure helps knowing what to order. Thank you very much.
Hello,with the tube disassembled shouldn't I be able to get air to pass through it? Im trying to rebuild a pump as well.
@Charles Sake Let me see if I understand the situation. You've got the pump out of the fount and pulled the pump rod and leather cup out of the pump tube. If you are just trying to blow air by mouth through the pump tube and the NRV is still in place, then no, you cannot blow hard enough to overcome the spring in the NRV. If you remove the NRV from the bottom of the tube, then air should pass freely through the small hole at the bottom of the tube. Look at the pictures above of the disassembled pump to see the components of the NRV.
