Air Gun Home :: View topic - Benjamin AS392 C02

Marc_Anthony · New Member

Hi, First of I'd like to say thanks for creating such a good forum, Ive had a good look round and found loads of great information.

My problem is, I've just bought a Benjamin AS392 C02 and yesterday I bought my first 88g tank and a tin of pallets. When I fitted he C02canister everything was good, I shot a couple of pellets at my target I'd set up and still all was working fine, then I shot a third pallet and straight away I could hear and see C02 spitting and hissing out of the barrel, I cocked the gun to fire another pellet to see if I could stop it and more Co2 was spitting and hissing out of the other end of the barrel. I managed to stop it by firing a couple more pellets but it happened again after shooting a few more times, it repeated this untill the C02 canister was empty, and I only got around 50 shots out of a brand new 88g canister.

Is this fatel or is i something that can be repaired, if it can be repaired how much will it cost me? Is it something I can fix or will it need to go in for repairs at my local air rifle shop or worse still will I have to send it of to the manufacturers.

Any help with this will be greatly appreciated.

Thanks Marc

broommaster2000 · Moderator

Seems like your O-rings are busted, allthough that would be stupid on a new rifle. Neutral

Did you use proper lube for them?

AirGunEric · Site Admin

The valve is obviously not sealing completely if the Co2 is flowing out the barrel.

It may be dirt stuck and holding the plunger open (this is much more likely than a leaky o-ring on a new rifle)- thus why when you fired a few times it went away- the dirt is shifting around.

Only way to be sure is to remove the valve and see what's going on in there.

Marc_Anthony · New Member

AirGunEric Thanks for the reply, you mention to remove the valve and see what's going on. I've never stripped an air rifle down before, I'd like to think I'm capable and am not scared of having a go.

Have you got any general advice? is it straight forward? am I going to be having lots of small parts and springs flying round the room? is there anything in particular that I should be aware of?

Many thanks
Marc

AirGunEric · Site Admin

There is very little that can go wrong if you are careful.

Here is the parts diagram: http://www.crosman.com/pdf/manuals/AS392T-EVP.pdf

The only part of the rifle that might be something to pay particular attention to when taking it apart is the trigger/safety mechanisms- everything else should be fairly straightforward.

Good luck!