Umarex Notos air fill problem

[MikeP.]

So I recently purchased the Notos rifle. Everything was working fine until I decided to adjust the trigger and also adjusted the hammer spring. According to the manual, you take all the pressure out of the cylinder, they call it degassing. Before you change any settings on the trigger or the hammer spring. Last night I adjusted those things after releasing the pressure. This morning it will not take air at all. I checked my compressor it’s working fine. Has anybody had this problem?
Any advice will be gladly accepted. Thank you.

 

[DeanB]

Cock the gun before trying to fill, make sure to put saftey on. See if that helps

Also I never degassed to adjust my trigger, no problems.

 

[Geezerhood]

I am assuming you are going straight into the gun from the compressor? There isn't enough volume / pressure sometimes that way to get the valve to seal again. If having the hammer cocked isn't working, try to find someone with a tank that can give it a higher volume burst of air to seal the valve. If you don't know anyone with that, and do have a fairly large water trap / filter, you can use that as the sealing source if you put a one way valve on the compressor side and a shutoff valve followed by a bleed valve on the gun side. I have done that several times to get a seal on an empty gun, before I had any tanks.

In the future, just be safe when working on adjustments but you might want to ignore the degassing recommendation.

I would only degass my gun to make adjustments if having pressure in there would damage something like the regulator seals or is required such as with the Uragan 2. Degassing to make trigger and hammer spring adjustments is just the legal department at Umarex putting in their two bits. I think FX tells you to remove the bottle and degas the M3 before changing barrels. I never do that but I keep body parts away from any HPA opening and wear eye protection at all times if there is air in the gun.

 

[KatoKevin454]

DeanB is correct, you don't need to degas the gun if you are going to adjust the trigger or the hammer spring, only if you are going to dis-assemble the gun and get into the pressurized area of the gun, like the poppet or the regulator for examples, just make sure the gun is safe and not loaded when working on the gun at anytime,

 

[EmptyTin_Tim]

I also would not and did not degas to adjust hammer spring or to polish the hammer or sears. But you need air in there when you test the trigger because if you don't have air the poppet can break (or so I've heard). So you actually want air in it to test dry firing.

 

[Gerry52]

It's also possible you've adjusted the trigger too lightly for everything to reset. IMHO not having pressure in the reservoir compounds the problem but it's more likely you need that strong"burst" of air to reset the valve.

 

[madeintheuk]

Every time I’ve degassed my notos to play with it, I’ve had to cock to refill. Seems the valve spring is a little too soft to keep the valve closed by itself without a little help from air pressure. Cocking it helped me fill it every time.

 

[EmptyTin_Tim]

I hand pump the Notos. No issues getting it aired up from zero. Just cock it and fill

 

[WNYBill]

I thik my question is answered above. Is it OK to dry fire the Notos while adjusting the trigger?

 

[EmptyTin_Tim]

I thik my question is answered above. Is it OK to dry fire the Notos while adjusting the trigger?

Yes you can always dry fire PCP ... BUT only with air in it for guns like Notos where the poppet needs the resistance of the air so it doesn't get slammed by the hammer and crack.

For example: It's like a break barrel you want the resistance of the pellet in there otherwise the piston slams and that's not good

 

[MikeP.]

Thank you for all your help. So here's what I did:
After cocking the gun and hooking up the compressor, I crossed my fingers... the gauge did not move.
But I noticed air was coming from the barrel at the loading end. I figured what the hell, so I put my finger over it just for a second or two and it started to fill it up! Fired off a couple shots and all was good.

Our daughter came over for Labor day and we all had fun taking turns shooting at targets. Trading off with the Notos and our Sig P226 pellet pistol. You guys helped to give me the confidence that I hadn't f**ked it up to badly. Thanks again!

 

[Healthservices]

As mentioned dry firing with air on this gun is okay. Do not do this without air pressure as it can damage the poppet valve. These are available on ebay should one get damaged.

Allen

 

[hunt4atomo]

hi everyone I got a problem with my umarex notos when I fill up the gun with my compressor when I bleed the valve all the air bleed also from my gun???any idea why is doing that????

 

[kahu]

hi everyone I got a problem with my umarex notos when I fill up the gun with my compressor when I bleed the valve all the air bleed also from my gun???any idea why is doing that????

See the example above. We'll need more info, like, how are you filling it now, do you have access to a tank to apply more pressure up front, are you cocking it to fill, has it been fine in the past and this is new, etc...

)

 

[hunt4atomo]

See the example above. We'll need more info, like, how are you filling it now, do you have access to a tank to apply more pressure up front, are you cocking it to fill, has it been fine in the past and this is new, etc...

)

it was working fine until yesterday I try to fill up but when release the purge valve in my compressor all the air bleed front the gun too ??? no idea why I didn't change anything is all stock

 

[Firewalker]

The fill probe is inside the fill cap/fitting and just underneath it inside the air tube is a small screw and o-ring attached to the bottom of that fitting.

This allows high pressure air to enter the air tube but the o-ring stops the air from escaping once the bleed valve is opened.

This screw should just kiss the o-ring and not sit off of it nor compress it.

Check that then reassemble and see if that solves your issue.

 

[hunt4atomo]

The fill probe is inside the fill cap/fitting and just underneath it inside the air tube is a small screw and o-ring attached to the bottom of that fitting.

This allows high pressure air to enter the air tube but the o-ring stops the air from escaping once the bleed valve is opened.

This screw should just kiss the o-ring and not sit off of it nor compress it.

Check that then reassemble and see if that solves your issue.

it works,!!! thank you so much for your help really appreciate your time

 

[Firewalker]

Outstanding!

Glad I could assist!

 

[EmptyTin_Tim]

The fill probe is inside the fill cap/fitting and just underneath it inside the air tube is a small screw and o-ring attached to the bottom of that fitting.

This allows high pressure air to enter the air tube but the o-ring stops the air from escaping once the bleed valve is opened.

This screw should just kiss the o-ring and not sit off of it nor compress it.

Check that then reassemble and see if that solves your issue.

Convinced a friend to get a Notos. He took out of the box and immediately didn't keep pressure in. (That was embarrassing cause I kept going on and on about how good Notos is lol) You hook to compressor , fill, then bleed and all air comes out.

The o ring under the screw you talk about was split from the factory!

I stuck a (I think) 009 size but 90 durometer o ring in there and aired it up and it worked right away. Also replaced the barrel o rings while it was apart cause those were shredded too. Glad I got tons of extras of those stupidly thin things.

Could have done the warranty claim but this was like a 20 min start to finish job so I was just extra careful not to mar anything in case it needs warranty claim later.

Thanks for the help Firewalker!

 

[Firewalker]

Yes, these are the 2 known issues with the Notos. Both of them could be fixed for pennies at the factory. If I could find the barrel orings in 90 duro, I'd be king!