MRod O-Ring

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Tanuki

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May 21, 2015
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I ordered a Benjamin Marauder .177 and was sighting it in today. After one of the shots, I had a hard time pulling the bolt back. I got the bolt back and removed the magazine, which was also hard to remove but I wiggled it out, inspected it and then slid right back in without any issue. During shot my next shot I got a dull thud of blow back in my hair. I pulled back the bolt and removed the magazine. Ever thing seemed fine but then I noticed a o-ring sitting on the stand. I believe somehow O-Ring 38 or 39 came out of the breech. How do I get it back in? Do I have to remove the barrel or can I get it back in from the breech face?

http://www.crosman.com/pdf/manuals/1763%20&%202263%20EVP%20&%20PL.PDF
 
I use a couple of picks to remove and install the breech o-rings. Use one pick to hold a portion of the o-ring in position and then use another to get the whole o-ring to slide into the o-ring land. Alittle tricky, but there is no need to remove the barrel. Remember to put a small amount of silicone grease on the o-ring. Cycle the bolt a few times to varify the o-ring is in correctly and stays put.
 
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Ya these o-rings can be tricky to install. Try this. Take a cleaning rod without a tip (or a small dowel) and feed it from the barrel end till is comes out the breach pull it back in until it is just past the groove the o-ring goes in. Hold it firmly there. Put the o-ring in and push it against the rod. The rod will keep it lined up so it will go in the groove where it belongs. You may need to find a L shaped tool to push it in with. Maybe a bent piece of wire. Just be sure the o-ring is not damaged. Its a good idea to get a set of replacment o-rings just to have. Hope this is understandable. Good luck!
 
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Alright... I found some silicone lube from my paintball days and made a pick out of a piece of fine wire that I then sanded to remove any rough edges. I was able to push the O-ring past the place where it wants to seat then I pulled it into place with the pick. I had lubed it before I seated it but handled it quiet a bit so I smeared a very small amount on the bolt and pushed it into place, figuring it would transfer some lube where it was needed onto the O-ring. I wish I had read the cleaning rod trick first, seems like a good way to do it. 

Thank you all for your assistance. The parts diagram made it look like it was seated pretty far back and tougher to get to than it was.

What do people do for their O-Ring replacement kits? Do you buy gun specific O-rings or do you buy an assortment pack? 

Tanuki
 
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