BSA R10 buddy bottle, leaks when putting it back on.

[RichardinDorset]

Sorted now. 'part 38' was slightly lose.

It seems a bit of an odd design, but the valve block, part 38 and the toast rack form a chamber, between the regulator and the knock off valve, but there are no seals between them, just one bolt through the middle.

There's no o-ring or gaskets, just a surface seal. So it doesn't take much for the air to leak out...

For some reason, taking the bottle off and bleeding off the regulator chamber allowed it to relax a bit and leak.

When I say lose, it needed maybe a 1/8 turn.

There's a vid on XTX showing the tightening of part 38 and it says it can become lose in transit or after taking off the bottle!

[rhyslightnin]

Sorted now. 'part 38' was slightly lose.

It seems a bit of an odd design, but the valve block, part 38 and the toast rack form a chamber, between the regulator and the knock off valve, but there are no seals between them, just one bolt through the middle.

There's no o-ring or gaskets, just a surface seal. So it doesn't take much for the air to leak out...

For some reason, taking the bottle off and bleeding off the regulator chamber allowed it to relax a bit and leak.

When I say lose, it needed maybe a 1/8 turn.

There's a vid on XTX showing the tightening of part 38 and it says it can become lose in transit or after taking off the bottle!

Thanks for the info... I'd recently thought mine had dumped all the air but as it turned out the bottle had come undone and the reg pressure dropped to nothing over a few shots, a chap on here pm'd me and bingo, rifle working again! I was almost sending it off to be tuned!
Great source of information on here!
Rhys