I had a very slow leak in the cylinder forever and finally sent to AOA. It came back today and seems to hold air now. However when screwing it into the action I now have a fast leak around the cylinder valve. I wonder if I can just replace the visible O-ring it seems straight forward (according to youtube) do I need the original O ring if yes where can I get one, or can it be replaced with something from the hardware store? Can the problem come from somewhere else? thanks for your help
HW/Weihrauch HW 100 leak?
- Thread starter redog
- Start date
I had the same issue with my HW 100 bullpupp . I gave AoA a call and they sent me the correct O-rings. They only cost me about a buck and they got here to Alabama very quickly.
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If you dig deep enough, you'll find (as I did a while back), a slightly larger OD, silicone o-ring is recommended.
I only had one. I put it on, no change, still leaking in the same area. I removed the valve from the receiver and changed that (thouse?) o-rings, still leaks.
I bought one of the aluminum cylinders that's available...still leaks, so I know now that my problem is somewhere in the receiver.
Will be going in for a full disassembly and o-ring refresh one of these days.
If you do a "Search", there's another HW100 o-ring problem question just a few days ago. 'Search" for it, it may have an answer to that person's leaking problem.
Mike
I only had one. I put it on, no change, still leaking in the same area. I removed the valve from the receiver and changed that (thouse?) o-rings, still leaks.
I bought one of the aluminum cylinders that's available...still leaks, so I know now that my problem is somewhere in the receiver.
Will be going in for a full disassembly and o-ring refresh one of these days.
If you do a "Search", there's another HW100 o-ring problem question just a few days ago. 'Search" for it, it may have an answer to that person's leaking problem.
Mike
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I think it is wise to just replace the common leak orings at the same time. The document has the sizes. I bought them from ebay and amazon. A silicon film on the orings helps, but very little.
I though my leak was in the cylinder side. I replaced those orings a few times and no change. I finally wised up and replaced #2568, the 12X1 oring and everything was rock tight. I saw some videos on repairing the HW100, and they said a little thicker oring works even better. So as luck would have it, I had a nitrile a smiidge bigger, and it was better than the factory rebuild kit.
A bought 2 nitrile kits from Amazon. One metric, one english. Those have almost everything, I bought #005 orings separately. It is not hard once you do it. No special tools, just metric allen keys, and I think a 8 or 10mm? socket.
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