How to replace the Marauder barrel o-ring.

[@PaulKilzer-p9g]

You are a treasure. Thank you for all that you do for our community. Watching your videos has helped me get a SAM-22 that arrived with issues up and running.

[@Monkeydad1969]

@@PaulKilzer-p9g thank you very much for those kind words. To know that some of my info helped you with your SAM is very good to know.

[@garynasrallah8710]

Thank you very much I accidentally blew mine out and someone was telling me I need to take the barrel off and take the breach off and you showed me a very easy way to put that O-ring back in

[@Monkeydad1969]

Cool. Glad to help.

[@beladeak643]

​@@Monkeydad1969Can you tell me the exact size of the o ring? Thanks

[@Monkeydad1969]

@@beladeak643 for a .5 Marauder it's a #2-010 (No.10 as I say in the vid). For a .177/.22 it's a 1.5mmx4mm. These are per Crosman/Benjamin on the EVP for the Marauders. If you have a good o-ring kit in SAE and Metric, you should be able to find those sizes.

[@niksutherland4280]

Excellent video, very helpful very simple and I know my gun 10 times better now because of it thank you bro

[@Monkeydad1969]

@@niksutherland4280 glad it helped.

[@byronpearson5571]

Great video, no BS and straight to the point. Here is some info that might help those who need actual dimensions. A 2-010 O-ring (for a .25 cal.) measures: 1/4 (ID), 3/8 (OD), and 1/16 (Width). Sometimes hardware stores only have O-rings listed by size. I got this info from the Parker O-ring guide; it’s online.

[@Monkeydad1969]

Thanks and thank you.

[@danielcurtis1434]

Are you sure on that? I got measurements of 5mm ID 9mm OD Abd 2mm width. My o rings work fine seemingly. I am not technically proficient so I hope you don’t take offense. I’m just not sure what to purchase and this and my hand pump is my only use for O rings. Thank you for your contribution I found o rings those specifications. I also bought the 5/9/2mm rings as well. I’ll return whatever doesn’t work best.

[@muhammadsteinberg]

Just to piggyback off of your post those dimensions are #10 SAE NOT metric.

[@MrLuanDo]

Thank you for the excellent video.! Without the O-ring, my Marauder 25 caliber makes much louder noise when I shoot. The pellet magazine didn't feed pellet properly and the o-ring get blown into one of the pellet compartments. Thank goodness I found the o-ring and, with the help of your video, I was able to put it back.

[@Monkeydad1969]

That's very good to hear. Thanks so much for your kind words.

[@rickybobby1142]

@luan do what are the chances? I literally had the same thing happen to me today! Went to shoot my .25 MROD, the magazine was acting a little funny after the first shot. Instead of ramming a second pellet into the breach, i popped out the Magazine and - SURPRISE! There was an O-Ring lodged in my magazine. I thought i had ruined the gun. BIG THANK YOU to MonkeyDad69 for the video. Re-installed the o-ring no problemo. Heart attack averted!

[@Monkeydad1969]

@@rickybobby1142 man, when it rains it pours, lol. Cool story. Keep on shooting.

[@WackyPossum]

Thanks this video worked for my Benjamin Armada in .25 cal it used the same O ring. It took me a few tries and I destroyed 2 o rings before it worked

[@Monkeydad1969]

I'm glad it helped.

[@niksutherland4280]

Did you initially do this repair in connection with a malfunction to the internal suppressor?

[@WackyPossum]

@@niksutherland4280 Not sure. After accidentally letting the bolt go forward with no pellets in the magazine I heard a 'misfire' and that's when the O-ring must've popped out. After that my shots were louder enough to hurt the ears and the shots felt weaker at the same time, I thought I had broke my gun at first then I noticed there was no o-ring. After I replaced the O-ring it started shooting quiet and brand new again.

[@BigFiveJack]

Excellently Informative Video! In less than two minutes we receive the info that we need! Great Job!!!!!

[@Monkeydad1969]

Thank you. I appreciate the comment.

[@robro6467]

Awesome video!!! 👏👍 Thank you for taking the time to post this up. My magazine jammed, and I found this o ring in it! Your video popped right up, and made short work of where it goes and how to install it. You da man!!! Happy shooting!!! 😉

[@Monkeydad1969]

Thank you. I'm glad to see that it helped.

[@mounirjermany5948]

Thank you for the straight forward video. Any chance you can share a video on how to replace the O ring on the fill port / nipple? I put a ballon over it and sure enough it is leaking. I have had the rifle for a short period of time and shot less than 400 rounds with it. Thank you.

[@Monkeydad1969]

@mounirjermany5948 thank you. Question... how do you fill the rifle, with a pump or tank?

[@Malick_ibn_dinar]

I’ve a yellow o ring that show at the end of the bolt when I slide it after cocking the gun . I had to fix a jam up and after doing so I encountered that issue with the o ring that I don’t know where it came from

[@Monkeydad1969]

I don't know where that o-ring came from. Did you buy the rifle used? There's only the o-ring in the barrel for the bolt probe to seal against. Pull that yellow o-ring off. You do have an o-ring in the barrel at the lead in, right? The only other thing I can assume is that it was part of the magazine if the mag is aftermarket.

[@Malick_ibn_dinar]

I do have the o-ring in the barrel for the bolt probe .I bought it brand new . I will take the gun out and see if everything works good . Btw thanks , your videos gave me the confidence to disassemble my rifle with ease

[@Monkeydad1969]

@Malick_ibn_dinar I'm glad it helped. I'm very curious about the o-ring. I haven't bought a new M-Rod, so I don't know what Benjamin is doing now. Does your's shoot properly?

[@Malick_ibn_dinar]

@@Monkeydad1969 I fired few rounds and it did pretty good . I just had some issue with the magazine but I found a tutorial on KZbin . How to fix the spring for more tension . There’s a lot of little flaws with these old Benjamin but once you know the mechanism of the gun . It’s fun to fix all the small issues

[@johngarnett8293]

What lube you using couldn't see the name brand. Good video thanks you for sharing.

[@Monkeydad1969]

Sorry, it's Oatey plumber's silicone from Ace Hardware, but it's only 90%. I needed it in a pinch. Works fine, won't cause any combustion. I'd advise getting 100% silicone from an airgun store or hobby store. Thank you.

[@MarkSmith-pd3nt]

Damn if my seal isn't missing, for some unknown reason.. but at least I now know what I need to fix it. Thanks for a great video and walk through.

[@Monkeydad1969]

Usually if the bolt isn't fully closed the seal will shoot out from the blast of air.

[@foundationdefense5299]

Thank you for the video. This was a big help

[@Monkeydad1969]

Glad it helped.

[@iikkakonola]

Thanks man, had to undo a attempted double feed, had a halfway jammed pellet in breech and pushed it back down the breech with a cleaning rod undoing the ring also..

[@Monkeydad1969]

Glad the vid helped.

[@ronaldyetzer6313]

Great informative video Joe!

[@Monkeydad1969]

Thanks Ron. Hope it helps the M-Rod owners out there. Be them newcomers or seasoned shooters.

[@Patrick-888]

The Oatey's Silicon Grease he uses can be purchased at Lowe's. HD doesn't carry it

[@muhammadsteinberg]

Excellent vid. Please follow this gentleman's advice on checking and replacing this o-ring. I tweaked my gun for pest control and hunting so my shot count is going to be low anyway. I didn't realize it was missing. Got a full 2mags (25cal, gen1) now. Interestingly fixing that exposed the dreaded ping. Not a performance issue but very irritating.

[@Monkeydad1969]

Yeah, that ping. You can always get the de-pinger from Crosman for the Gen 2 or get a piece of rubber, cut to fit and put down the tube.

[@stephen26448]

I got 2 pellets stuck in the barrel and with alot of force was able to get them out one was in backwards and now the pellets come out of the muzzle doing circular motions before going far to the right into the woods what have I done to barrel or something else to cause this

[@tempoford3283]

How do you get the old o-ring out?... THANKS

[@Monkeydad1969]

I just used a dental pick to remove it, but most times it is blown out the breech if the bolt isn't closed all the way or the o-ring is real old and not lubed it will blow out the muzzle when fired.

[@mikeprokurat1383]

What caliber is this? I did not hear it mentioned. The net is great if you want all kinds of irrelevant answers for a question! I read that the .22 takes a #9? I really have no idea. And yes, I've found like 30 different answers, so I'm just confused. I am looking for the correct size o-ring for a .22 marauder breech o-ring? Thank you. Very good video.

[@Monkeydad1969]

That's a .25. Sorry, I should've said. The .22 according to Benjamin is a #2-009.

[@mikeprokurat1383]

thanks!

[@mikeprokurat1383]

So, just to add to my confusion. My Danco set of plumbing o-rings has a #10 listed as 11/16" OD x 1/2" ID and 3/32" wall. I see #2-009 listed other places at 11/32" OD x 7/32" ID width of 1/16". I'm guessing the Danco ring kit must use a different scale? The most frustrating part is that Benjamin sent me some, for free, and I lost them! Anyway, thanks for the help! My marauder was a great shooter until recently. It held 1/2" groups at 100 feet. Then it started shooting 2.5"+ size groups. The smith at Benji said the o-ring will tighten it back up.

[@Monkeydad1969]

@@mikeprokurat1383 yes, because you're leaking air out the barrel where the o-ring should be. Now is a good time to clean your barrel.

[@mikeprokurat1383]

@@Monkeydad1969 I completely disassembled and cleaned it. Accuracy improved some. I'm still confused about o-ring sizes

[@tripleceas]

My favorite part is when he says’ just don’t dry fire your gun anymore’ that’s exactly why I’m here HA!

[@Monkeydad1969]

It happens.

[@bornagian1744]

Joe.can u do a video on removg the barrel.im gettg a tj barrel.that would be asome

[@Monkeydad1969]

I can do that. I'll try to do it this Sunday if I'm not working.

[@stephen26448]

How do you know that something is wrong with this oring

[@niksutherland4280]

I think one example for me; I have the Armada. Every thousand shots or so something happens to where my internal suppressor noticeably stops being as effective. when it first happened I didn't know what had happened or how to fix it so I sent it in on warranty and them fixing or replacing my o-rings brought the gun volume back down to backyard friendly. That's what brings me to this video trying to figure out how to do it without having to send the gun to New York again

[@danielcurtis1434]

Thank you so much!!! I am a “mechanical idiot”. And I found your explanation and presentation to be perfect for those of us like myself. I am curious when you say “#10 O ring”, do you mean 10mm? My understanding is your reference is to an O ring 12mm outside diameter and 10mm internal diameter with 1mm thickness. Is that correct? I bough 50 on Amazon fit a few bucks I just want to confirm I got the correct item. In any case that O ring is a real “ Achilles heel”!!! I mean I had it blow out and it was hanging on the bolt itself. Unfortunately I didn’t notice this until I opened the bolt and the ring dropped to the plant life below. The new O ring seems to be working fine. I just wish they could come up with a permanent solution for the gas seal. Of course gas seal has been an issue with firearms as long as we’ve had gun powder!!!

[@Monkeydad1969]

I am so sorry to reply so late. So I'm replacing the o-ring for the .25 barrel. With Crosman it is part # 106-005 (#2-010), but in my Harbor Freight o-ring box it said #10. For general knowledge the .177 is part # 1763-058 (1.5mmx4mm), the .22 is part # 1761A023 (#2-009).

[@germanrivera962]

What measure is that packaging that you are putting on the piece

[@Monkeydad1969]

What caliber do you have?

[@anilabbaraju1]

Hi can we fill marauder to 3200psi

[@Monkeydad1969]

I do, but do so at your own discretion. But I do with no issues.

[@a.l.r.3006]

I you'd like to ask you if you ever change the bridge o ring in.177 marauder and if you have the dimensions;

[@Monkeydad1969]

Bridge o-ring? Can you be a bit more specific?

[@a.l.r.3006]

@@Monkeydad1969 sorry the same o ring you change in the video.

[@a.l.r.3006]

I was meaning the barrel o ring ,.

[@Monkeydad1969]

@a.l.r.3006 it's 1.5mm x 4mm. Hope this helps.

[@a.l.r.3006]

@@Monkeydad1969 thanks i tried yesterday this size. Thanks again my friend.

[@bornagian1744]

Thanks joe.im going to try that tomrow joe.alex

[@Monkeydad1969]

It's real easy.

[@LowkeyAirgunner]

So dry firing it caused the O-ring to fly away? Interesting

[@Monkeydad1969]

If your bolt isn't closed fully, it can happen.

[@Huntingprecision]

Dimensions for .22 cal benjamin akela ????

[@Monkeydad1969]

I'm sorry, I don't know. I don't own one. Go to Crosman's site and go to the Akela and see if they have a EVP on the parts.

[@bornagian1744]

Thank u joe.for when u can do it.u r asome Joe alex

[@LauroJrJacob]

I have replaced the barrel o-ring but there is still blowback. what could be the reason?

[@Monkeydad1969]

Is it coming from the barrel past the bolt or is it coming from under the breech at the tube?

[@LauroJrJacob]

@Monkeydad1969 I think the air is coming from the breech at the tube and the sound loud when fired

[@Monkeydad1969]

@@LauroJrJacob check that o-ring and make sure it is in there and didn't shoot out the front. Also, depending on what you used to install it --- if you used a metal pick, as an example --- that the o-ring wasn't damaged. But it sounds like it may have shot out the front. Just make sure it is seated fully within the groove. Let me know.

[@LauroJrJacob]

@Monkeydad1969 I've changed the o-ring several times and I'm sure it fits well in the groove but there's still blowback isn't it from the pellet pusher?

[@Monkeydad1969]

@LauroJrJacob if you have the proper size o-ring, the probe should seal. Unfortunately, it's hard to diagnose without actually having it in front of me. All the parts are original to the rifle?

[@kaslongrady9554]

is the O ring size for .25 marauder #10 or #010 and

[@Monkeydad1969]

It's #2-010. Sorry, I called it a #10. The #2 is the thickness.

[@bornagian1744]

No hurry.in the next couple weeks.if u can joe

[@Monkeydad1969]

I'll actually be doing the vid for you this Sunday. What generation M-Rod do you have?

[@Patrick-888]

Would be nice if you'd describe for the audience and use a tooth pick or your dental pick to show where the O-ring goes. I.e. see the barrel, the O-ring goes around the outside. Good info though and straight to the point.

[@aronkeylfb023]

please my friend

[@billclinton3572]

Thanks for the video. I had my rifle loaded, didn't realize I had knocked the bolt part way back open, and the o-ring actually blew into one of the magazine chambers. I had no idea where the hell it came from. My dumbass put it on the bolt behind the magazine then kept wondering why the hell my rifle was suddenly so loud. Google led me here

[@Monkeydad1969]

Yes, I'm laughing...laughing with you. I'm glad the vid helped.

[@billclinton3572]

@@Monkeydad1969 I'm impressed you reply to your two year old video. Kudos to you lol. Keep on keeping on my man! There's always a niche for some videos

[@Monkeydad1969]

@@billclinton3572 thanks. I'm not really a contact creator, but I do make sure to reply back. Happy Holidays!