New seals in an Avanti
Posted: Mon Feb 16, 2009 10:56 pm
I am taking over some of the maintenance duty for our county's 4-H shooting sports program. As such I have a lot of questions and I'm hoping you guys can help me with any/some of them.
We have a number of Daisy Powerline 977's that don't have much power... I'm not sure what is going on as I haven't torn into them yet, but you can hear that they don't have the speed that other 977 rifles have. Does anyone know what the size of O-rings are that these rifles use?
We also have some single-pump Avanti's. I'm not sure if these single pumps are 853 or 953 or ??. How can I tell - because I don't find any model number, just a serial number on the barrel? I'm just going to call them 853s.
So I have an 853 torn down right now. There is an O ring on the piston and another at the end of the compressed air chamber. Both of these seem to be in good shape but as soon as I figure out the right size I might replace them anyway. I pump the rifle and I hear air hissing out somewhere. I did not find an o-ring in the valve assembly - just the pin and spring inside the valve that are hit by the hammer. Is there supposed to be an O-ring on the pin?
I got some parts diagrams from emailed from Daisy, but they look like they were faxed then scanned into a PDF so the image quality is poor. The breakdown of parts is also not good so I can't tell from an "O-ring and valve group" exactly where I should or shouldn't have an O-ring much less what size. That's where I'm hoping someone here can help.
Thank you much for any help!
We have a number of Daisy Powerline 977's that don't have much power... I'm not sure what is going on as I haven't torn into them yet, but you can hear that they don't have the speed that other 977 rifles have. Does anyone know what the size of O-rings are that these rifles use?
We also have some single-pump Avanti's. I'm not sure if these single pumps are 853 or 953 or ??. How can I tell - because I don't find any model number, just a serial number on the barrel? I'm just going to call them 853s.
So I have an 853 torn down right now. There is an O ring on the piston and another at the end of the compressed air chamber. Both of these seem to be in good shape but as soon as I figure out the right size I might replace them anyway. I pump the rifle and I hear air hissing out somewhere. I did not find an o-ring in the valve assembly - just the pin and spring inside the valve that are hit by the hammer. Is there supposed to be an O-ring on the pin?
I got some parts diagrams from emailed from Daisy, but they look like they were faxed then scanned into a PDF so the image quality is poor. The breakdown of parts is also not good so I can't tell from an "O-ring and valve group" exactly where I should or shouldn't have an O-ring much less what size. That's where I'm hoping someone here can help.
Thank you much for any help!