Feinwerkbau 603 rebuild help

[Bibbles1911]

Hi all. I'm wondering if anyone can point me in the direction of some instructions on how to replace the Seals in my feinwerkbau 603 air rifle. I bought it second hand in perfect condition and have used it with no issues for about 4 years. Finally, cocked the rifle which seemed normal, loaded a pellet, when it fired it sounded very under powered and that resulted in the pellet stuck half way down the barrel. I used the dry fire setting and fired and felt a small pop of air coming from somewhere. Used the dry fire setting a few more times and felt like a normal dry fire. I figured if 1 seal when bad then might as well change all of them. And while I'm familiar with some repair of firearms I am completely ignorant of this level of air rifle. Any help would be greatly appreciated.

Thanks in advance for any help, Bob. 

 

[Centercut]

This guy on YouTube has a series about the FWB 601, which is very similar to your 603. I used it to rebuild my 601.

https://youtu.be/Sh6gQYLtzOY

 

[Bibbles1911]

That's helpful I didn't know the 601 would be the right one to watch. Thanks. 

 

[Lewis]

Sorry, the seals cost more than the gun is worth, your best bet is to cut your losses and send it to me. PM me for the address.



Unfortunately, the truth is seals are a few bucks and Centercut is correct. The video should get you there, they are really very simple if you are mechanically inclined at all. Take tons of pictures as you go. There are lots of us who have had theirs apart and are happy to help.

 

[Bibbles1911]

Thanks. I've watched the video a few times now and I think I should be able to manage it. Let's hope the Seals don't take too long to get here! 

 

[Quagmire]

That's a cool air rifle. I'd love to pick one of those up someday. Good luck with the rebuild.

 

[Bibbles1911]

Thanks for the input on the rebuild, guys. Happy to share that the rebuild went smooth and although I don't have a chrono the rifle is shooting just as accurately as ever! 

 

[Lewis]

Good to hear! They will NEVER wear out and are as accurate as any current 10M gun. They just take a little longer to load. Enjoy it. You will likely always be able to get more than you paid for one.

 

[1BadDart]

Good to hear! They will NEVER wear out and are as accurate as any current 10M gun. They just take a little longer to load. Enjoy it. You will likely always be able to get more than you paid for one.

I shot a 10M fun bench rest match tonight at a local gun club and finished second with my 601 behind my buddy and his 601. He shot 499/500 and I shot 496/500. We beat some pretty high dollar PCP rifles, so yes, they are still very competitive.

 

[Lewis]

WooHoo!

That's how it's done!

 

[Weihrauch]

603.
Is shroud a press fit or just tight?

 

[marflow 777]

if you look at the parts break down, they show the barrel and the shroud but not as separate parts and that would lead me to believe it has been glued in place

 

[Weihrauch]

if you look at the parts break down, they show the barrel and the shroud but not as separate parts and that would lead me to believe it has been glued in place

That’s interesting, possibly glued in place. Thanks