Bullboss hammer bounce

[Adkguide7943]

Just wondering if anyone could help me out? I just replaced the hammer sear or debounce device? Not sure which it is because Hatsan USA sent the part I needed and on the receipt they called it a Hammer sear but I think it's the HDD? They also sent me a new hammer screw. I installed correctly and have the gun set to the speed that is most accurate for the JSB 18.13's that I'm using. It is a tack driver again, I have no problem with the accuracy but now it burps air but not on every shot? Sometimes when the tank is low. I didn't have a hammer bounce before, didn't change the spring. I wonder if an o-ring may have split or is not seated right?

[redlined_b16a]

Pull it apart and put it back together.
Twice on my bullboss I accidentally let the hammer debounce
pin slip out of the grove and the gun assembled wrong.

Gun was accurate but hammer debounce did not function.

[Rocko]

Like Redline said, it can be a bit of a challenge to get things back together properly.  To make it easier, I put a small dab of epoxy on both ends of the pin to keep it in place.

[Adkguide7943]

Will do, thanks for the reply guys.

[rgb1]

Would anyone have a schematic
that includes a parts list ?

                                  Ron

[redlined_b16a]

The hammer debounce should be the same as the at44 long.
There is a link in here for a pdf parts diagram
https://spares.bagnallandkirkwood.co.uk/hatsan/hatsan-bullboss/

[rgb1]

There is a link in here for a pdf parts diagram
https://spares.bagnallandkirkwood.co.uk/hatsan/hatsan-bullboss/

There' s no parts list.

[redlined_b16a]

Click the work "here"

[rgb1]

Click the work "here"

Yes, I had already downloaded the pdf. But it has
pics only.......no parts list.

[Hobbyman2007]

Is it possible that you installed it upside down ? I've done in myself and notice only after going through way more air than normal.

[Rocko]

You can see it from the left side of the breech, just under the side plate that covers the mag. advance levers. There is a gap where you see it move up & down as you pull back on the cocking lever.