A&M leaking cylinder.

[Tadpole]

Thanks guys for your help emailed a&m and they have replied saying to send it back to them and they will fix free of charge ��will look at that vid though first. Sounds like that I ring has perished as there was a few bits of crud in there.thanks for the info chaps.

Hth .. https://www.youtube.com/watch?v=OFgWQlA0Z5c ..

[woodpigeon]

Hth .. https://www.youtube.com/watch?v=OFgWQlA0Z5c ..

Yes looked at that vid several times now seems like a great simple fix, however the guy says that you need a 10 mm countersunk screw. Mine is certainly not metric and is a fine thread and smaller than 10 mm. Plus how does this work?does the air force its way past the o ring when filling?if that's the case what stops it leaking past it when the cylinder is full?😳any advice would be most welcome.

[M11YKX]

Yes looked at that vid several times now seems like a great simple fix, however the guy says that you need a 10 mm countersunk screw. Mine is certainly not metric and is a fine thread and smaller than 10 mm. Plus how does this work?does the air force its way past the o ring when filling?if that's the case what stops it leaking past it when the cylinder is full?��any advice would be most welcome.

There is a fill port and pressure gauge designed for BSA's by Tench that uses the same principle, i.e. An Oring around a countersunk bolt. As your filling the incoming pressure is greater than that in the cylinder, so it forces it's way past the Oring seal. When you stop filling the pressure in the cylinder causes the Oring to seal between the countersink of the bolt and the face of the fill valve. It's a simple solution and works very well.

HTH, Mike.

[woodpigeon]

Gotcha thanks😉