Well,I spent a good number of hours replacing the Vortex type 2 spring in my .22 135 qe earlier today.The piston died overnight one night. My favorite air rifle of all...I was expecting the day to come eventually. I had a couple of Vortex springs fail in 95's, one was replaced by Hatsan under warranty, the other was a dead-on-arrival "refurb" from Midway, if I recall correctly, which I sent right back.I had near-immediate response from Hatsan USA, ordered 2 of the type 2 Vortex springs and had them in a few days.I learned a lot over the few hours I did the repair. I will be faster next time, but I was consulting some of the relevant Youtube videos. Made a few mistakes which took a fair amount of time. No big deal getting the new spring in and getting the pin in that retains the endcap/safety end. I had an easy time getting one of the pins that holds the trigger unit in place but I must have spent a hour lining things up to get the second one in! It seemed very strange that two of the three pins holding the action in place should have gone in with no difficulty but the third was very, very uncooperative. Tried manipulating the trigger block this way and that, sticking a punch through the hole to ling things up, eventually pulled the trigger block out and filed away to enlarge the holes in the trigger block a bit. Had to hammer a lot, using a rubber mallet. It did go in eventually, but in the meantime, everything-everything!-fell out of the trigger block and I basically had to reassemble everything from the ground up, all the sear pieces, springs and pins. Thank goodness for the relevant Mike Ellingsworth videos!! That trigger assembly is not intuitive to someone without a really sound understanding of the mechanism. I understand it a lot better tonight that I did yesterday.All came together nicely, put everything back into the stock and...the gun would not cock! Had to pull everything out. I just had to play with the trigger adjustment screws and then everything was back to normal.I have to thank a lot of people here for their posts over the years. I've learned a ton, and now have pride at having a challenging repair under my belt. I had to laugh a few times earlier today, because I made so many beginner mistakes, in fact mistakes I've read about here for years...especially losing that tiny flimsy spring from inside the trigger block. That one took a while to find, and a while to figure out where the heck it came from! I will be more confident and efficient with the next one.Next project is to rebuild the dead Vortex type 2. I have o-rings coming next week, propane torch ready to help loosen the shaft-end fittings. The old one has the release valve, but the two new ones don't. I'll mention I did try refilling the dead Vortex spring with a pcp pump up to 2000 psi. The pressure leaked again overnight. I hope the new o-rings will provide a long-term solution. Will report back on that one!Thanks for reading all this!
There are a few tricks that make tear-down and re-assembly easier on Hatsans. The process takes less time the more you work on them.fyi... I like to use snug fitting o-rings on the Quattro pins to keep them from falling out.
Grooved pins with clips is most secure but is beyond folks like me who don't have a metal lathe.The o-rings pictured are on "oem" pins. I don't think you can replace these pins with longer pins and still install into the stock. When the trigger group is installed in the stock the stock itself keeps the factory trigger pins centered in-place.CAUTION: I'm not certain but i don't think there is enough space for my o-rings to come off the pins once the trigger group is installed in the stock. If I'm wrong a loose o-ring floating around could cause a trigger malfunction. That has not happened to me (yet).
Mikey,Thanks for your reply. I was thinking about why I could not get the second cross pin through the trigger block. I suspect the metal in the area of that pin must have been slightly deformed by my manipulation. This was the middle of the three cross pins. The most forward of the cross pins went in very easily, and honestly, it's hard to keep that front one in place-it just slides out unless I've got tape over it.When I replace the o rings in the dead Vortex spring, is it reasonable not to disassemble the back part of the spring, where the filling port is? Not likely the o rings back there are compromised, since there is really any movement happening there, I figure. Interested in your take.Dennis