Starting to hear air hissing and found a leak coming past the bolt on top as marked in the photo. What are my options on self fixing?
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Yong Heng Leak help
- Thread starter Redick
- Start date
Remove the tube and the fitting. See if it’s just an o ring. Might have a spare in the parts that came with it... good luck.
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It's the "dowty seal " or bonded seal under the nut. My YH came with assorted replacement o-rings & extra bonded seals. Check your parts & good luck. Easy fix.
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What he said. 
I have had three leaks, in that area and all were Dowty seals under the top fitting. It gets very hot there and the rubber seals pay the price. Easiest way I have found, and often as not the only way to get the lines loose, is put the wrenches close together and squeeze them together with your hands. This will break the lines loose without spinning the fitting and damaging the lines.
I have had three leaks, in that area and all were Dowty seals under the top fitting. It gets very hot there and the rubber seals pay the price. Easiest way I have found, and often as not the only way to get the lines loose, is put the wrenches close together and squeeze them together with your hands. This will break the lines loose without spinning the fitting and damaging the lines.Upvote 0
If you listen to his gibberish you likely to pass out asleep so - Put The Yong Heng video on Mute and listen to THIS-
https://youtu.be/yaI2uZU_CnU
This was 10 hours ago since they didn't post a new one this past week like they normally do.
https://youtu.be/yaI2uZU_CnU
This was 10 hours ago since they didn't post a new one this past week like they normally do.
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Got it took apart and replaced the 2 Green orings that I saw under there got it back together and No Pressure 
#Round 2... FIGHT
#Round 2... FIGHT
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SO where is it leaking now? (Soapy water test) perhaps one of the lines aren't seated properly b4 tightening the nut?
These guys are on it-
https://youtu.be/NWz5V4pqBxM
These guys are on it-
https://youtu.be/NWz5V4pqBxM
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The compressors are only as strong as their weakest link. And that link always seems to be the o-rings. Don't over-think it. If it's not getting up to pressure, you have another leak, or it's leaking in the same spot. Get a spray bottle with soapy water (dish-washing liquid), and try to run the compressor under load. Everywhere there's a stainless steel tube or a hose connection, give it a good squirt. If there's a leak, it will get nice and bubbly. Then you can address the leak. When you put those compressors back together, you need to tighten things down systematically. Say you remove one of the stainless steel tubes to replace the o-rings. Well, there are 2 ends of that tube. So start to thread them together. tighten one end a little bit, then shift to the other end and repeat. Don't just cinch it down on one side first. They can be temperamental. But if it's not coming up to pressure, then obviously there's a leak. Use the dish soap to find it. Keep it simple. Don't order parts if you don't need them.
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WOW! the prices from the link at ebay are over the top. A complete cylinder and piston assy. complete is 170 on the bay, and what, 58 on ali. at the yong Heng store. And both are a wait and shipped from China.
The shipping form the store raises it to 80+ buck, but still 90 bucks less.
Knife
The shipping form the store raises it to 80+ buck, but still 90 bucks less.
Knife
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