GTA
Airguns by Make and Model => Vintage Air Gun Gate => Topic started by: oldnamvet on February 29, 2016, 11:58:55 AM
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Mine has started to leak even after application of secret sauce. Each pump is rewarded with a puff of air out the barrel. Is the valve for a rocker racine sheridan soldered in or free to remove and replace the seals? I have replaced the valve on a 392 that was not soldered in and that was relatively easy.
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It's soldered in Tom. It's most likely the little rubber on the base of the valve stem. As you can tell in the pic the rubber is imprinted with the shape of the valve body. Cocking it first doesn't help? You can try digging this out and replacing it with a o-ring from hardware store. I've done with success on a Streak. If it's rock hard it's a pain to get out, but can be done. On some of the real hard ones I put a flame to it, helps a lot. Some valve stems unscrew from the base(like in the image). Which will make getting the rubber out easier.
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What is weird is that after application of the sauce, I pumped it up and it held air overnight. I fired it once and when I attempted to pump again, all the air just went out the barrel. Seemed like something was dislodged by the first firing and it stuck in the valve. I'll probably give it another sauce shot and see if I can wash whatever out. Nothing to lose now. I was going to be sending it in for a steroid treatment later this year -- now maybe sooner.
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What is weird is that after application of the sauce, I pumped it up and it held air overnight. I fired it once and when I attempted to pump again, all the air just went out the barrel. Seemed like something was dislodged by the first firing and it stuck in the valve. I'll probably give it another sauce shot and see if I can wash whatever out. Nothing to lose now. I was going to be sending it in for a steroid treatment later this year -- now maybe sooner.
It was probably the sauce that was filling the area of the leak. Than when you fired it most the sauce went pass the valve and out the TP. On one occasion when I was trying different rings for that valve stem I blew the ring into the valve body. Doubt that's what happened though in yours. Unless someone resealed it and did the same thing I did.
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The sauce treatment probably loosened some gunk up and it got caught in the stem seal. Try cocking and dry firing 10 or so times.
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You can flush the valve with alcohol to clean out loose gunk. Squirt a little alcohol in the hole by the pump arm slot with the pump arm fully opened and the bolt cocked. Pump it twice and fire. Repeat with squirts of alcohol until it begins to hold air. Then pump twice and dry fire repeatedly until all the alcohol has been exhausted from the valve. Lube it with secret sauce or whatever is your favorite oil. Done. If that doesn't work then a reseal job is indicated. The only caution is do not pump it more than twice with alcohol in the valve. You don't want the alcohol to ignite under pressure.
Jon
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You can flush the valve with alcohol to clean out loose gunk. Squirt a little alcohol in the hole by the cocking slot with the pump arm fully opened and the bolt cocked. Pump it twice and fire. Repeat with squirts of alcohol until it begins to hold air. Then pump twice and dry fire repeatedly until all the alcohol has been exhausted from the valve. Lube it with secret sauce or whatever is your favorite oil. Done. If that doesn't work then a reseal job is indicated. The only caution is do not pump it more than twice with alcohol in the valve. You don't want the alcohol to ignite under pressure.
Jon
Ok, hold up just a second.... did you just describe a turbo boost for my pumpers? ... lol Kinda like a mini spud gun slinging lead. Oh YEAH !!! Alcohol burning pellet gun ! Better order some seals and o-rings.
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Ok, hold up just a second.... did you just describe a turbo boost for my pumpers? ... lol Kinda like a mini spud gun slinging lead. Oh YEAH !!! Alcohol burning pellet gun ! Better order some seals and o-rings.
The idea is not to compress the alcohol to the point it will diesel. If that happens you will feel the pump arm kick back. It's not violent, it feels like something stopped the pump arm. Feels like something bumped the arm. You are pushing the alcohol through and out of the valve taking the loose bits and gunk with it. If it's not holding air at all the alcohol and crud goes right through. I've done it and it works. It loosens and flushes out gunk Secret Sauce won't. I got a Sheridan that wouldn't hold air shooting again using this method. That was a couple of years ago and it's still shooting.
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I like where this is going. Always like to learn what different heads do.
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When you say alcohol are you referring to methanol or ethanol? I could also press my air compressor hose against the air inlet hole and push the alcohol through using that. No chance of a diesel effect using 90 psi air.
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Unless you open the exhaust valve you ain't gonna push nuthin thru nowhere.
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I was pushing through ethanol until it blocked. Then I could pump and it held air. Shot it about 10 times and put 6 pumps in it to see how long it will hold -- maybe overnight?
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I was pushing through ethanol until it blocked. Then I could pump and it held air. Shot it about 10 times and put 6 pumps in it to see how long it will hold -- maybe overnight?
As soon as all the alcohol is out immediately lube it. You don't want the seals to dry out any more than they already have. Store it with 2 pumps not 6.
I used 90% isopropyl alcohol. Probably doesn't matter.
Jon
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Pumped and shot it about 20 times, then put several drops of sauce in and shot it another 20 times. Gave it 3 pumps and am letting it set overnight. If it holds air that long, it will be good enough for me. Thanks to everyone for all the suggestions. It worked!
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Pumped and shot it about 20 times, then put several drops of sauce in and shot it another 20 times. Gave it 3 pumps and am letting it set overnight. If it holds air that long, it will be good enough for me. Thanks to everyone for all the suggestions. It worked!
Bada-bing! Glad it worked for you. It's always worth giving the alcohol flush treatment a try. If it doesn't work you've lost nothing and get to look forward to the experience of resealing a Sheridan. :D
Jon
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This is good information. When my Streak wasn't holding air I was actually thinking about taking it out of the stock, blocking the poppet open and running hot soapy water through the valve. Followed by plain hot water and then ND30 oil.
Didn't have to do that though, because just oil did the trick after a few days.
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" Over-oiling " it may have flushed some debris down in there & caused this. I hope it starts holding air , again.
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After sitting for 18 hours with a couple of pumps, it held it all -- or at least sounded like it anyway. So I am now shooting it again, at least 20 shots a day. My antique body won't let me go for more than that at a time even though I only give it 3 pumps for basement targets. Besides, I have a 392 PA that needs exercise as well as several other pumpers. Just waiting for this knee deep snow to melt and warm weather to arrive so I can go to the woods and shoot at longer ranges than available in my basement. By then I will have the bug and decide to talk to Steve again to reserve an old Sheridan.
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After sitting for 18 hours with a couple of pumps, it held it all -- or at least sounded like it anyway. So I am now shooting it again, at least 20 shots a day. My antique body won't let me go for more than that at a time even though I only give it 3 pumps for basement targets. Besides, I have a 392 PA that needs exercise as well as several other pumpers. Just waiting for this knee deep snow to melt and warm weather to arrive so I can go to the woods and shoot at longer ranges than available in my basement. By then I will have the bug and decide to talk to Steve again to reserve an old Sheridan.
That sounds more like it . Shoot it a lot && NO MORE oil for awhile. I oil them a couple of drops after each tin of pellets, or about once a year. Yours had plenty of oil in it when you got it. Too much oil can cause problems .
I do have a few OLD Dan's right now that are very, very nice !!!
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Geez you are an enabler. Would like to have a very early one, thumb safety, straight bolt, like the first one I owned as a kid and foolishly traded off before I was out of puberty. Going to start saving a little out of each SSI check.
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Geez you are an enabler. Would like to have a very early one, thumb safety, straight bolt, like the first one I owned as a kid and foolishly traded off before I was out of puberty. Going to start saving a little out of each SSI check.
That is what my personal Silver is like, a 1957 . I have a ''50-60" Blue that is like that. The Silver I have is a near mint 1967. Several other later Blues are in the stables as well.
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Checked to see if it still held air after a week or so. No problem. it shot out the stored air with good power so I am going to consider this one tight. Now I can start shooting it every evening. I try to do that with several of my AGs so they all get used at least a couple times a week. Snow is almost gone and weather in the 50s so I might even get out before the next blizzard. I know winter is far from being done with us yet. I remember still a large snowfall years ago on May 5th.