200A and 202 reproduction
frames back
in stock.

GlenP
I love my CQ lamp, but I just can't get the filler/pump plug to hold air.  It continues to have a slow leak (I have to pump up about every 10 minutes.)

I've cleaned it, blown compressed air through, oiled it - no luck.  I can hear the ball moving when I shake it, so it isn't seized.  I guess it's just worn.  

Are there tricks, or is it time for me to start searching for one?

Thanks!!

Glen IMG_1783.jpg  IMG_1854.jpg  IMG_1857.jpg  IMG_1859.jpg
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Gand28
Do you know where the leak is?  The originals just had a lead gasket that gets deformed.  I use a small o-ring around the threads which allows a finger tight seal instead of wrenching on it to seat the lead gasket.

If it's leaking from the check ball and through the thumb screw, I've had some luck polishing the check ball with a wire wheel on a Dremel.  Also, sometimes reseating the ball with a gentle tap with a mallet.  If that fails, it's time for a new fill plug.
Greg -- Fiat Lux!
ICCC Member #1273
Seeker of Canadian Nickel!
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GlenP
I’ve placed a gasket where the lead one was. It’s definately through the check ball Greg. I can take the thumb screw out and cover it with my thumb and stop the leak. How do you get it apart to get the check ball out?
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Gand28
You don't take it apart.  I turn them upside down, put a toothpick in to push the ball all the way to the bottom (which is facing up) and run the Dremel wheel over the bottom.  If you keep the pressure on the toothpick light, the ball is free to spin and will usually get cleaner.  I also paint a little naval jelly in around the ball first to soften up any deposits.

Your plug is a bit rounded and shows some use.  It may be time to find another.  
Greg -- Fiat Lux!
ICCC Member #1273
Seeker of Canadian Nickel!
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GlenP
Thanks Greg.

Yup. It’s a bit worn! Maybe I’ll post in the classifieds to see if anyone wants to part with one. I think OCP has repopped brass ones, but I’d prefer to stay with the nickel plated original style.
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SteveRetherford
put it in a bucket of Lye solution over night , blow it out with compressed air n try again .
[DrSteve2]    Steve , Keeper of the Light !!!
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Majicwrench
Does the ball provide the seal?? Doesn't screwing in the thumb screw create the seal?? Jeesh I am confused.
Keith
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cricket
Majicwrench wrote:
Does the ball provide the seal?? Doesn't screwing in the thumb screw create the seal?? Jeesh I am confused.

Me too. Ball itself will not get you 100% seal . Same with regular check valves in lanterns with built in pumps. Air stem is what gives you positive seal by turning it clock wise or to the right. Same here with lamp. Thumb screw is what supposed to give you 100% seal .
Tim.
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Puffie40
I think these fuel caps are similar in construction to the check valve and air stem combo seen on lanterns - the ball seals the valve while the air stem provides a secondary mechanical seal.

Try polishing the point on the air stem and see what happens.
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mcdugal2
Yes If you know someone with a lathe carefully chuck t in the lathe and with a sanding block and 600-800 grit paper re-tip the air-stem..
Phil Rhoades ICCC# 1125
The Coleman Blue's 243's. #035

"I'm a man, but I can Change, if I have to, I guess." - Red Green
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GlenP
Thanks everyone. I have found another. But, yes it still leaks, albeit slowly, with the thumb screw cranked in. I will see about touching up the bottom of it.

Glen
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Brassngas
Sounds like you've got it covered. You can retaper the thumb screw point as mentioned. Usually when they leak they will have a slight grove mid way on the tapered section. Clean it up and use a little force to reseat it. Good luck!
So many lanterns, so little time....  ICCC member #151
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Gunhippie
If you're handy with a soldering iron, tin the tip of the air screw (not a propeller). The thin coating of lead deforms easily to make a good seal. I've done this on several valve stems and it works wonders. Be careful not to plug the hole, of course.
It's priceless until someone puts a price on it.
Walk a mile in a man's shoes before you criticize him--then you're a mile away, and he has no shoes.
Texan's last words: "Y'all--hold my beer--I wanta' try sumptin'."
Timm--Middle of nowhere, near the end of the road, Oregon.
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GlenP
Now that’s something I never thought of!
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