For the life of me i cannot figure why anyone would even think to do this ? Totally unbelievable !
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Underwater leak test, DON'T!
- Thread starter JaceSpace1369
- Start date
Rust in a barrel is a no go!
I acquired a Benjamin Crack barrel that could barely get on paper at 25 yards. It turned out to be a rusty barrel. I cleaned and shot copper clad pellets, until I got it clear. Afterwards I was shooting small targets, like shot shells and bottle caps.
I acquired a Benjamin Crack barrel that could barely get on paper at 25 yards. It turned out to be a rusty barrel. I cleaned and shot copper clad pellets, until I got it clear. Afterwards I was shooting small targets, like shot shells and bottle caps.
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A lot of people think black oxide or gun bluing is a rust preventer. For all practical purposes it’s an indoor coating. But even indoors both can rust. A light coating of a rust preventive and low humidity is key.
Nice work on the restoration.
Nice work on the restoration.
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This is an excellent question because many established and experienced tuners use the dunk method for finding stubborn leaks still. Sure they know the Airgun intimately and have it completely disassembled and compressed air dry it along with other methods to make sure it’s completely dry with no chance of rust.
Sometimes those stubborn small leaks are a nightmare even after a complete reseal. You just hope that it’s not a scrapped o-ring wall from a pick or something bad like that you’re missing That will take machining to fix.
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Interesting point about drying with compressed air. I bet I could use my HPA tank as a giant compressed air nozzle. 
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A few yrs back I was interested in getting a K1. I went to Krazy kool's site & he had a short video of him dunking the K1 receiver in some kind of liquid & showing the bubbles coming out. It definitely wasn't water, so I sent him an email asking what he was using? I never got a reply & that video is no longer on his site?
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I did it, years ago as a last resort with an Impact... I was definitely very nervous!! I just couldn't find the leak, so at the advice of Ernest, I took a chance and dunked it.
I did find the leak, fixed it and didn't have any problems with rust. I am a bit OCD which definitely helped... It's all in the preparation, disassembly and drying/lubing afterward.
Disassemble as much as possible, dunk it, find the leak, then disassemble the whole thing, repair the leak, dry everything and liberally lube everything. Let it sit for a while, wipe it down, reassemble and then lube it again.
I wouldn't recommend it, but if you disassemble, dunk, dry, lube, repair, reassemble and thoroughly lube each part again, it's definitely doable... Scary but doable!
Have a great afternoon!
Stoti
I did find the leak, fixed it and didn't have any problems with rust. I am a bit OCD which definitely helped... It's all in the preparation, disassembly and drying/lubing afterward.
Disassemble as much as possible, dunk it, find the leak, then disassemble the whole thing, repair the leak, dry everything and liberally lube everything. Let it sit for a while, wipe it down, reassemble and then lube it again.
I wouldn't recommend it, but if you disassemble, dunk, dry, lube, repair, reassemble and thoroughly lube each part again, it's definitely doable... Scary but doable!
Have a great afternoon!
Stoti
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