Umarex Smithing the Hammer

[ChrisS]

Looking for someone with experience troubleshooting/fixing the Hammer. I have one with a slow leak and cannot find it. Had the shroud and forearm off and done the water/soap thing on all the finttings, no dice. Kinda scared to dig into the back end without knowing what's in there. Anyone?

Thanks in advance
Chris

 

[birdie]

check backside of guage.

 

[ChrisS]

OK, finally the thing started to leak fast enough that I could track it. I pulled off all the shrouds forward of the trigger assy. to reveal the bottle and regulator. There are two screws that are very well hidden in the rear most shroud that took me a while to find...sneaky Umarex. Air was leaking out between the two halves of the regulator. The Gold colored half is glued to the bottle and un-removable, but the black half of the reg is what contains the belleville washer assy's. At the forward end of this assy is a teflon oring, it was the culprit. It was leaking and allowing air to flow back out between the two halves of the regulator. I replaced the oring and reassembled. It's now been holding a full charge of air for 24 hours...yay!

Chris

 

[Ozarkhunter]

Do you find the Hammer easy to work on? Any other issues with your rifle?

 

[TheBeardedGunsmith]

OK, finally the thing started to leak fast enough that I could track it. I pulled off all the shrouds forward of the trigger assy. to reveal the bottle and regulator. There are two screws that are very well hidden in the rear most shroud that took me a while to find...sneaky Umarex. Air was leaking out between the two halves of the regulator. The Gold colored half is glued to the bottle and un-removable, but the black half of the reg is what contains the belleville washer assy's. At the forward end of this assy is a teflon oring, it was the culprit. It was leaking and allowing air to flow back out between the two halves of the regulator. I replaced the oring and reassembled. It's now been holding a full charge of air for 24 hours...yay!

Chris

This is good info because I also own a hammer that's developed a slow leak.

 

[ChrisS]

Well, I have not gotten into the rear end of the gun, but I do feel confident on the forward part. Now that I have figured out those two screws that hold the rear most shroud in place. Generally pretty straight forward. It's actually a nicely made rifle, lots more metal than you might think. I suppose that shows in the weight. I am quite impressed with how hard it shoots. I put a 450 grain slug through a steel automotive wheel from edge on. A good square shot that left a hole about an inch and a half in diameter from 30 yards.

Chris