valve

Can a qb`s valve be pulled without separating breech and barrell???HELP??

[IJL]

You may get it out but you could not expect it to go back together properly due to the transfer port seal, especially if it's been modded. What's the problem?

Ian

Well I`ve never worked on any of these guns b4,but i have a modded qb79,I wanna swap the modded valve into a carbine 78.

[ribbonstone]

My first thought was "no...you can't".

Thought about it for awhile, and my new aswer is still "no...not very easily".

Can't get the hammer out until the bolt is lifted up, which disengages the two pins that run the hammer back and forth.  If you could take the valve apart and pull the vlave out of the front (and pulling it out of a blind hole would be difficult), you'd still probably ruin the transfer port seal.

Considering the problems, it's a whole lot easier to just take the rifle completely down.

Then I`ll need to re-seale everything,right?

[ribbonstone]

Maybe....generally, the first time you take one apart, those sharp edges cut the valve o-ring to ribbons.  IF you hone/smooth the sharp internal edges inside the tube, from then on you could take it apart and put it togetehr wihtout ruining any o-rings (and usually pick up a little speed and consistancy as well).

But for what you want to do...suspect even if all you moved was teh valve, it would get cut on one projection or another before it got out of the gun.

THX 4 the info....guess I`ll call Bob and have him shoot me a couple of reseal kits...

[IJL]

OK well having spare seals makes sense but you shouldnt need a full kit every time you tear it down, just ensure the barrel O rings dont get cut and most of the others will look after themselves if you put a thin smear of silicone grease on them.
Maybe easier just to mod the carbine valve?

Ian