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Old 08-02-10, 10:35 AM   #1
rodar y rodar
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Coleman pumps

First, what it is that I really need to know- can old leather seal cups be "reconstituted"? I tried on an old lantern I just got from a garage sale and it doesn`t seem to be doing anything. Just buy a new rubber style one? I know the rubber kind fit, but in the spirit of adventure, I kind of want to get the cool leather one working.

Second isn`t really important, just something I`ve been wondering. What`s the purpose of that square rod that turns with the pump button?
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Old 08-02-10, 12:03 PM   #2
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Yes, much like Silca pumps, the leather can be reconditioned... I cannot think of the name of the stuff to do it though. I would just go down and buy and new kit to fix it.. Make sure the lantern works before you put a lot of time into it. You could also have a regulator that doesn't work, but you won't know until you can pressurize the tank.

The square rod is because it turns a mechanism inside to actually lock the pressure into the tank. When you begin pumping, you turn the knob counterclockwise and hold you thumb over the little hole as you pump. On the last stroke as you continue to hold your thumb onto the button, you turn it clockwise to lock the pressure in.
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Old 08-02-10, 04:56 PM   #3
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Originally Posted by rodar y rodar View Post
First, what it is that I really need to know- can old leather seal cups be "reconstituted"? I tried on an old lantern I just got from a garage sale and it doesn`t seem to be doing anything. Just buy a new rubber style one? I know the rubber kind fit, but in the spirit of adventure, I kind of want to get the cool leather one working.

Second isn`t really important, just something I`ve been wondering. What`s the purpose of that square rod that turns with the pump button?
Soak the leather in oil. I usually use a machine or engine oil NOT neatsfoot oil. It will soften the leather up. The square rod is to lock the pump mechanism down and keep the pressure sealed in the tank. FWIW I have a HUGE collection of old Coleman white gas stuff, some of it dating back to the 50's.

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Old 08-02-10, 05:14 PM   #4
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Soak the leather in oil. I usually use a machine or engine oil NOT neatsfoot oil. It will soften the leather up.
Yes, I have done the same and it worked well.
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Old 08-02-10, 05:17 PM   #5
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It is important to hold your thumb over the hole on the end of the push rod, otherwise you will get no pressure. This is an easy mistake to make if you are not used to older coleman equipment. I have used leather pump washers for decades, but I occasionally have to take them out and "spread" them a bit to get them to work well.

If you have not used one before, look for instructions on the internet. Getting the valving figured out without instructions is a good way to burn the hair off your hand.
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Old 08-02-10, 06:44 PM   #6
rodar y rodar
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Okay, I`ll keep my hopes up. I took it out, doused it good with 3 in 1, and reinstalled it yesterday, maybe next I`ll dunk it in motor oil and leave it to soak for a few days. I didn`t think to try spreading it with my fingers- sounds worth a try if a long soak doesn`t swell it up. Yeah, I know about stopping the little hole. Unless they made some major changes very recently, the new stuff looks different, but works the same way as the old stuff except for the cleaner crank thingie, and still has the thumb hole in the pump end.

Thanks for the input.
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