the o-rings can just be Buna 90
if it was CO2 urethane should be used
http://anotherairgunblog.blogspot.com/2009/12/daisy-717-repair-part-2.html
now the new valve stem might not work in the old valves and seeing that the new ones are not available and you might not be able to mix and match you run in to problems
as that post notes he did everything to make what he had work and everything failed and if he can't do it we can't either, the why is he is a magician
one other thing the old wipers were made out of felt so if you don't not have a foam one which i think are fragile at best you can make a felt one
fixing air guns is never a rush project for me, take it apart clean it up make a plan and then do it or wait till the next day you have to n=know what you might need and because shipping sucks buy once and you seem to be like me, if i need 1 I buy 4
if i need 1 o-ring i buy a bag of 20 or 50 some times the same price
and one last thing i have been using Ultramox 226 on the bolt and what a difference it makes and yes that white grease is very expensive but it is needed to rebuild Diana model 5-6-10's in my opinion
Ok gents, I hope both Mike and Bill can see this reply. Cleared the workspace this morning and got started. I followed the steps in the Another Airgun Blog that Mike sent me. It was pretty straight forward. Rear sight came out in pieces with plastic all over the bench. All pieces in small container. Grips came off ok with a bit of rust on the heads. Pieces saved. Next took out the three screws And the Right plate came off fine. As I went to turn the gun over, the grip separated in my hand and was laid to the side. When the left cover came off, a small square bolt fell on the workbench and I have no idea where it came from. Got the bolt out after a small struggle - looks like replacing the o ring could be challenging. Next pulled exhaust valve housing and barrel free. Exhaust valve looks ok but I can’t see inside. At present, I don’t intend to pull it out. Seal in one piece but looks flattened as I expected it would. Next tackled the cocking lever and got the pump head out. The felt wiper was in pieces and fell apart. The o ring was in one piece but pretty flattened. I suspect the squished o rings caused the no compression problem and can only hope the exhaust valve is ok. Thanks to both of you for the helpful hints and guidance. Still haven’t received new valves from Daisy but valve in JG kit looks like the new design. Oh, where do I get Ultramox 226? I googled and could not find. Cheers - Dave Bthe o-rings can just be Buna 90
if it was CO2 urethane should be used
http://anotherairgunblog.blogspot.com/2009/12/daisy-717-repair-part-2.html
now the new valve stem might not work in the old valves and seeing that the new ones are not available and you might not be able to mix and match you run in to problems
as that post notes he did everything to make what he had work and everything failed and if he can't do it we can't either, the why is he is a magician
one other thing the old wipers were made out of felt so if you don't not have a foam one which i think are fragile at best you can make a felt one
fixing air guns is never a rush project for me, take it apart clean it up make a plan and then do it or wait till the next day you have to n=know what you might need and because shipping sucks buy once and you seem to be like me, if i need 1 I buy 4
if i need 1 o-ring i buy a bag of 20 or 50 some times the same price
and one last thing i have been using Ultramox 226 on the bolt and what a difference it makes and yes that white grease is very expensive but it is needed to rebuild Diana model 5-6-10's in my opinion
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