I have an Avenge-X 25 cal and have had numerous o-ring issues over time -
There are two different schematics of the rifle that I know of - with variations for the stocks and tube or bottle air storage. The drawing available at Pyramid Air is the clearer one but doesn't list a few of the pieces (they are in groups and assemblies)
I took just the core parts and made a slightly revised diagram with a bit more information about the o-rings - including the Shore hardness - showing the Shore 70 and Shore 90 o-rings (there are also a few "white" poly o-rings on the bottle I didn't note)
I have replaced the ones labeled #79 twice now - seem to be a frequent source of leaks
I have replaced the #77 o-ring inside the regulator three times now - Careful checking around the threads of the regulator has revealed slow leaks and each time, the inside o-ring replacement cleared the issue.
O-Ring #74 is actually the one visible on the stem when you remove the regulator - its outside the enclosed core. Its the most challenging to install but doesn't have to be replaced to get to the #77 ring that keeps deforming and leaking.
Ring 27 is actually inside the end of the valve seat - part 29 - and the stem inserts from the poppet side - not from where its shown.
This isn't anything official - just thought I would share as I made the chart to make my maintenance easier.
There are two different schematics of the rifle that I know of - with variations for the stocks and tube or bottle air storage. The drawing available at Pyramid Air is the clearer one but doesn't list a few of the pieces (they are in groups and assemblies)
I took just the core parts and made a slightly revised diagram with a bit more information about the o-rings - including the Shore hardness - showing the Shore 70 and Shore 90 o-rings (there are also a few "white" poly o-rings on the bottle I didn't note)
I have replaced the ones labeled #79 twice now - seem to be a frequent source of leaks
I have replaced the #77 o-ring inside the regulator three times now - Careful checking around the threads of the regulator has revealed slow leaks and each time, the inside o-ring replacement cleared the issue.
O-Ring #74 is actually the one visible on the stem when you remove the regulator - its outside the enclosed core. Its the most challenging to install but doesn't have to be replaced to get to the #77 ring that keeps deforming and leaking.
Ring 27 is actually inside the end of the valve seat - part 29 - and the stem inserts from the poppet side - not from where its shown.
This isn't anything official - just thought I would share as I made the chart to make my maintenance easier.