GTA

All Springer/NP/PCP Air Gun Discussion General => Air Gun Gate => Topic started by: DobsOnly on May 03, 2013, 11:58:03 PM

Title: Daisy 747 rebuild pics
Post by: DobsOnly on May 03, 2013, 11:58:03 PM
Well new seals, wiper and Air valve assembly arrived this evening for my Daisy 747.  Ordered 2 seal kits and 2 replacement valves from Daisy.  I've had it for several years and have run several thousand pellets through it.  It was still shooting well but was struggling to cut clean holes in the paper and figured I give the old gun a once over. 

Not as bad as I was thinking.


Seals were not in to bad a shape but you can see the old valve compared to the new one and the wiper was crumbling.

My first air gun repair  8)  Cant wait to try it out if the rain stops tomorrow.
Title: Re: Daisy 747 rebuild pics
Post by: Acapulco on May 04, 2013, 02:09:14 AM
Nice job. Yep,  they are nice guns indeed.

Top..777 - 747 w/ walnut grips - 717 tuned by Nygord
(http://i5.photobucket.com/albums/y191/lasabre/IMAG0714.jpg) (http://s5.photobucket.com/user/lasabre/media/IMAG0714.jpg.html)

Not to many people own one, so keep it on the DL.
Title: Re: Daisy 747 rebuild pics added a question
Post by: DobsOnly on May 04, 2013, 10:19:37 AM
Acapulco
After the rebuild the cocking lever seems very free?  Cock the gun, fire it and tip the gun to the left and the handle will just drop away from the side. The screw that holds the lever and the front sight in place seems to be as tight as I can get it. 

Any suggestions?

I'm also unsure about the piston adjustment.  Any tips on the steps you use to verify piston adjustment would be appreciated.
Title: Re: Daisy 747 rebuild pics added a question
Post by: DobsOnly on May 04, 2013, 10:49:11 AM
Acapulco
After the rebuild the cocking lever seems very free?  Cock the gun, fire it and tip the gun to the left and the handle will just drop away from the side.

Just found a YouTube video of a 777 that displays the same behaviour. Maybe this is more normal than I thought.
Title: Re: Daisy 747 rebuild pics
Post by: ac12 on May 04, 2013, 03:53:53 PM
The charging handle should NOT drop away from the pistol when tilted.
The charging handle on my 747 stays in place.
Title: Re: Daisy 747 rebuild pics
Post by: DobsOnly on May 04, 2013, 09:00:16 PM
The charging handle should NOT drop away from the pistol when tilted.
The charging handle on my 747 stays in place.

Thanks, any reccomedations on what to check, adjust etc
Title: Re: Daisy 747 rebuild pics
Post by: robert w on May 04, 2013, 10:54:22 PM
isnt there an adjustment on the arm to make it overcenter? i think you have to make it by trial and error till you get it just right. good writeup. im proud of you , i seen you didnt use cheep harbor freight tools. lots of fine guns are buggered up with cheep tools . looks like craftsman tools
Title: Re: Daisy 747 rebuild pics
Post by: ac12 on May 04, 2013, 11:37:21 PM
Robert said what I could not find the word for...overcenter.

I found a pix that shows what you need to adjust to get the overcenter to work.