GTA
PCP - HPA - C02 Gate => QB-7X Gate -W/Co2 & HPA => : Gene_SC July 19, 2006, 01:53:42 PM
-
Guess something must be stuck in the valve.. I first had a bad o'ring on the bottle. Part of it was missing. Fixed that and now the QB leaks after a fill. Gonna have to look how to take it apart and clean the valve.
Gene
-
Talk to Mike Melick. He walked me through the disassembly on the telephone. Mike is a great guy, but you probably already know that. Miy QB78 was doing the same thing a couple of weeks ago. I took it apart with Mike's help and took the valve out. I took the valve apart, but couldn't find anything wrong. I checked the valve seal with a magnifying glass but still didn't see anything wrong. I wiped off the valve seal, put everything back together, and the leak was fixed. I think a little bit of fluff gets on the valve seal and it leaks as a result. It doesn't take much.
Bevo66
-
Well, I carried the Sick QB over to CharlieDaTuna's shop and we found the problem. It was the valve pin seal. I talked to Roy at Mountain Air and he is gonna replace it. That really makes me happy cause I don't have to put it all together and send it back... :)
Gene
-
Roy at Mountain Air is also a super guy to work with on airguns. I have an MA2250 from him. It is deadly and shoots hard.
Gene, you said it was the valve pin seal. Is this the same thing that I was calling the "valve seal",i.e., the seal on the valve stem?
Just curious.
Bevo66
-
Yes Bevo66
At the bottom of the steel pin where it is pressed into the brass piece.
Gene
-
Thats a common problem on hot rods, Roy will make it right I'm sure.
-
Yes Mike, He is sending me a replacement next week. Mike have you got a .20 cal barrel for the QB's?
Gene
-
Sorry no I don't, just use stock parts mostly on my rifles. I think Lothar-Walther may have them. I see Roy Wied has stems for sale now.