Classic 68 problems

[pbjunky99]

Yesterday I fired up my pumpmag and played all day(I realy love this gun). For some reason today it decided to act up and I cant figure out why.

I have a classic 68 valve with a lv 7 bolt. When I air up the gun it leaks out the bolt but when I pull the trigger it stops. I know that this is normaly fixed by replacing the o-rings in the lv7, but they looked good. I even decided to install the lv7 in my xvalve and it worked great(no leaks at all). I have checked the on/off and everything looks good there too. I am at a loss as to what to do next.

[FA22RaptorF22]

I only really know level 10's, which they say that if you add too many shims you will have a constant leak.

So if we translate that to your level 7, you would need a smaller spacer i believe.

GL :)

[pbjunky99]

i didnt know you could put a smaller spacer in a lv7. If thats the case then where do I get a smaller one from? Why would it work fine in a x valve and not in the classic?

[sjrtk]

If you want to change the spacer you would need a spacer kit this one is on ebay right now.
http://cgi.ebay.com/ws/eBayISAPI.dll...70133298109&ss
as for the leak i'm not sure.

[athomas]

Generally a leak down the powertube that stops when you hold the trigger, is a bad powertube oring. If the powertube oring is fine then it is probably sear wear. As the sear wears, the bolt sits farther forward and eventually will not make contact with the powertube oring. When this happens, you need to install a shorter powertube spacer to allow the oring to make contact with the back of the bolt stem again. Generally, when you operate a pump mag, you want the shortest powertube spacer installed anyway, since the pumpmag works by inducing bolt stick.