Hw110 power drop

[sam r 356]

Been a bit concerned about the power drop off on my 110 chrono showed 10.2 ftp down from 10.8 apparently a common issue so I thought I’d try and do it myself rather than send it back to hull cartridges as some of the feedback on them hadn’t been good with some people having to send their guns back several times so found this link 

and then set about working on it ,all fairly straight forward but fiddly only stumbling block was removing cocking lever but that was overcome which released the hammer from the action, then to set about removing the anti tamper , which is a small 3 mm threaded bar with only about 1.5 mm showing above the hammer no room to get grips on it so out with the hacksaw a small slot was cut with just enough width for a screw driver to bite followed by heating up with blow torch to burn out the thread lock , and out it came this revealed a 4mm Allen head which adjusts the power ( anti clockwise turn raises the power ) quick go on the chrono and it was up to 11.6 ftp happy at that , I put it all back together with no parts left over and all working as it should 

 

[sam r 356]

https://www.airgunforum.co.uk/community/index.php?threads/a-first-hand-look-inside-the-weihrauch-hw110.244341/

[Dervburner 2,549]

Nice one Sam. What is the part in picture six?

[sam r 356]

1 hour ago, Dervburner said:

Nice one Sam. What is the part in picture six?

Pic 1&2 show the hammer in the centre is a small round item this is what is in pic 6 , this is the anti tamper that needs to come out before you can access the Allen screw ( pic5 ) to adjust the power setting