Webley Nemesis SSP not holding air

[On-the-target]

I went to have a bit of target shooting in the garden with my Nemesis SSP and found that the charge leaked away almost immediately. It was holding air perfectly the last time I used it a week or two ago. Does anyone have hands on experience with the SSP Nemesis who could point me in the most likely direction of the problem?

[Shed tuner]

try dripping some light oil / atf into the air intake hole. might help soften some hard seals..

[On-the-target]

try dripping some light oil / atf into the air intake hole. might help soften some hard seals..

Thanks for the suggestion but in this case I have already tried a drop of oil into the small air intake but no joy.

[Thegreg]

IIRC the Nemesis used an oring as a piston seal so that would be relatively easy to replace/rule out. If you undo the little grub screw the piston just pulls straight out of the cylinder. My money would be on the air release valve, which is a little brass-bodied component within the pistol grip. Mine failed once, when cocked it would lose its pressure over the course of a minute or so.

Cheers
Greg

[On-the-target]

IIRC the Nemesis used an oring as a piston seal so that would be relatively easy to replace/rule out. If you undo the little grub screw the piston just pulls straight out of the cylinder. My money would be on the air release valve, which is a little brass-bodied component within the pistol grip. Mine failed once, when cocked it would lose its pressure over the course of a minute or so.

Cheers
Greg

Hi Greg, I think you might be correct with your suspicion of the air release valve. Is it straightforward to get at, I can't find much information on the web regarding the SSP Nemesis.

Thanks, Alan

[Troubledshooter]

Here's a scan of the 2007 Airgun World Bulmer Strip article:
As you say, there doesn't seem to be a lot of information available on this SSP pistol, and I've never had to do much to them.

[On-the-target]

Here's a scan of the 2007 Airgun World Bulmer Strip article:
As you say, there doesn't seem to be a lot of information available on this SSP pistol, and I've never had to do much to them.

Thanks for the scans, they are really helpful. I've ordered a set of seals from Knibbs
Alan