200A and 202 reproduction
frames back
in stock.

Gojoe
This morning I got an almost new 220k, someone had scribes their name on it. But other than that it is lightly used.
When I pump it, air escapes from the pump. I am assuming that the check valve is stuck open, correct? So is there any fix for this without removing the check valve?
Right or wrong I've removed the pump and dumped a dash of marvel mystery oil into the the pump shaft with the hope of freeing up the valve.
Any other thoughts?
Trick or trout! Anybody got a fish?
Just how big is Aroostook County anyway??
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hikerduane
Removal is best, but many have luck pumping carb cleaner or something along that line, be careful of paint.  Maybe just a small obstruction and pumping something thru will clear it.  Does the pump shaft rise when you finish a stroke?
Duane
Duane-All seasons, year round backpacker and camper.  So many stoves and lanterns, who's counting.
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zoomkat
"When I pump it, air escapes from the pump. I am assuming that the check valve is stuck open, correct?"

That depends on how much leakage there is. Note that the check valve is not intended to be a positive shutoff valve, it only aids in pumping the lantern up. The needle valve in the check valve assembly is the positive pressure valve.
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Gojoe
Duane, the pump does not rise. I'm going to let it set for the rest of the day. If there is no change, I'll try carb cleaner tomorrow.
Thanks
Trick or trout! Anybody got a fish?
Just how big is Aroostook County anyway??
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Gojoe
Z, so it could be the needle valve? Same treatment ?
Trick or trout! Anybody got a fish?
Just how big is Aroostook County anyway??
Quote
Smudge
Sometimes it helps to poke around in there with the sharp end of a wooden skewer.
"If all the beasts were gone, men would die from a great loneliness of spirit, for whatever happens to the beasts,
also happens to the man. Whatever befalls the Earth, befalls the sons of the Earth.” - Chief Seattle

ICCC # 1726  -  Bernz0matiC Appreciation Club #057
Perfection Heater Collectors #6
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zoomkat
"Z, so it could be the needle valve? Same treatment ?"

The check valve can leak a little and the lantern still be perfectly useable. If you pump the lantern up good and the pump shaft does not try to rise while the pump vent hole is covered, then the check valve is probably good. The pump should not attempt to rise when the needle valve is closed. The needle valve is the valve that should not leak. You usually check the needle valve for leakage (with the pump cup well oiled) by pumping the lantern up good, closing the needle valve, and then putting a soapy finger tip lightly over the pump plunger vent hole and see if there are any small bubbles forming. 
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fuel brained
I also use a piece of 0000 steel wool on the end of the pump shaft.  ðŸ˜
Pastor Jeff
God said "Let there be light" so He let His Son shine.
SoCal and Lovin' It. Desert Rat Division
US Navy Submarine Cold War Veteran
MilSpec Ops #1960 "Feel the Roar"
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Gojoe
All,
I was able to free up the check valve with your help. It seems that marvels and a piece of .040 safety wire poking around was just the ticket.
Now that it's lite, only one burner will stay lighted, time for a good cleaning.
Trick or trout! Anybody got a fish?
Just how big is Aroostook County anyway??
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