I have opportunity to buy a rebuild kit for my Daisy 747 that uses polyurethane & teflon seals. Has anyone used one of these kits ? If you have, was the performance on a par with an O.E.M. parts rebuild when you were done? It looks pretty slick but I wonder if the claim "once & done" is true. I just don't know.
Daisy New Daisy 747 "Rebuild Parts Kit" question
- Thread starter Akosgun
- Start date
the Orings can be just Buna 70 or 90
i tell all rebuilder to leave the valve alone and just replace the probe and piston head and tube Oring and then test
now if you have a leak, it would be at the valve stem Oring and or the valve stem leaking out the barrel
urethane Orings are on the hard side and are not needed
but i have never tried them in a Daisy
i tell all rebuilder to leave the valve alone and just replace the probe and piston head and tube Oring and then test
now if you have a leak, it would be at the valve stem Oring and or the valve stem leaking out the barrel
urethane Orings are on the hard side and are not needed
but i have never tried them in a Daisy
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I did a bunch of rebuilds a couple of years ago.. I got the kits from an ebay vendor and have been pleased. I cannot remember what the o ring material was, but instead of a foam washer for oil, it uses a bunch of teflon split rings, something like 5 or 7, cannot remember, that go in the groove where the foam washer was. They remind me of piston rings in and internal combustion engine, the space between the rings tend to hold enough oil to wipe the inside of the cylinder
Just looked, and this looks like the kit I used, but it was not nearly that expensive.
To answer your question, I am pleased. They have been in the guns 2-2 1/2 years with no problems. Now I must say that they have not seen a lot of use as I have so many other guns that nothing I have gets shot that much. I did clean and then checked everywhere the rings, & o rings contacted to make sure that there were no burrs anywhere and also completely degreased and relubed the trigger mechanism, fresh lube on it seemed to help the trigger pull
Just looked, and this looks like the kit I used, but it was not nearly that expensive.
Polyurethane / Teflon Rebulid Kit for Daisy Models 717 747 777 with Valve | eBay
DAISY 717 / 747 / 777 POLYURENTHANE TEFLON REBUILD KIT - complete kit to re-seal your airgun. See Pics: The Last picture compares the OLD style foam wiper with the Teflon wiper, it has been installed in my gun for 3 years.
www.ebay.com
To answer your question, I am pleased. They have been in the guns 2-2 1/2 years with no problems. Now I must say that they have not seen a lot of use as I have so many other guns that nothing I have gets shot that much. I did clean and then checked everywhere the rings, & o rings contacted to make sure that there were no burrs anywhere and also completely degreased and relubed the trigger mechanism, fresh lube on it seemed to help the trigger pull
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