You can troubleshoot this with the tips below:
When the hose is inserted into the gun, there is an o-ring to seal the connection. If this is dry, it may be difficult to take it off or put it on. Here you can use almost any type of grease to make it slide better. When this is done, the o-ring will also survive longer and the hose will move more easily when you work with the gun.
In a few cases, we have seen that the connector sleeve (the rubber lining around the end of the hose) has shifted. It will then prevent the hose from reaching all the way inside the gun. or it will be difficult to get it locked.
The connector sleeve is this part:
If the rubber lining is behind the edge as you see in the first picture, it should be ok. If it goes outside, it can create the above-mentioned problem. A sleeve that fits correctly looks like this:
If it goes past the edge marked with a green arrow, it can easily be "pulled back" by pulling it a little. One option is to carefully cut away the part with knife or similar.
We are currently working on translating and rewriting all of our articles into English from the original Norwegian. Whilst we are proud of the quality of our language skills here at AVA, we are aware that there may be some slightly odd syntax and wording present in the articles that have been translated. The approach we have taken to this translation process is in order to get as much information as possible out to our customers in a timely fashion. Thusly the ongoing revision and updating of these articles by our British-Norwegian team will include slight changes to how the text is put together in order to bring it more into line with correct British English.