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J5311 · Member

well my friends friend left if rifle at a cabin i had for 3 weeks and decided to take it since he hasn't gone to pick it up in 3 weeks since he lives 5 mins away...

when you would pump it you can hear air leaking so i just thought it would be the gaskets. so i decided to take it apart and it was really easy to do so.
After getting it totally disassembled I saw huge gashes on the side of the compression tube. I also looked inside and one of the gashes prodruded into the chamber which wasn't good.

So i went to the local hardware store and got some 600 grit sandpaper, #11 gaskets, And JB weld.

I sanded down the area that was inside the tube as best as i could and put the JB weld on the outside and worked it into the tube. after it dried i sanded it down once again.
Then I replaced the seals and lubed it with silicone grease. assembled it and no leaks now.....

But another problem arises. When I pump it It only has (estimating from the pistol I've fired) about 200 fps. And that is pumping it once or pumping it 8-10 times. Anyone have an idea it would be?

midnightsniper · Member

Do not know if you found the info you are looking for.I get seal kits ($40+$6 S&H) from http://www.daisyrepair.com/contact.htm and individual parts can be had through http://www.jgairguns.biz/

Here is JG Airguns parts break down.They have parts prices on their website.Just have to dig to find them or email them.

Usually the part numbers needed are
DAI880CS1
DAI880OA2 quantity 2
DAI717-22

and occassionally
CRS0241
DAI880-133081
DAI880FO

Here is the only parts diagram I have of the 880 with the full metal receiver.