This turns out to be the hardest part to disassemble: inside of the tube cap. This nut appears to be Loctited in. Minutes of blowtorching hasn't helped yet. It just won't move. There must be an o'ring under the nut. Otherwise I can't see how it wouldn't leak. The piercer pin runs through the center and is sealed by this o-ring. Can anybody confirm my suspicion that there's an o-ring there? Today I will receive a set of hole punches. I have a valve seal that probably fits if I can enlarge the hole in the center. Cheers
Quote from: louisvanhovell on January 08, 2021, 02:28:03 AMThis turns out to be the hardest part to disassemble: inside of the tube cap. This nut appears to be Loctited in. Minutes of blowtorching hasn't helped yet. It just won't move. There must be an o'ring under the nut. Otherwise I can't see how it wouldn't leak. The piercer pin runs through the center and is sealed by this o-ring. Can anybody confirm my suspicion that there's an o-ring there? Today I will receive a set of hole punches. I have a valve seal that probably fits if I can enlarge the hole in the center. CheersHi Louis,In part 5 of the blog, Nick takes this nut off and there seems to be a metal spring washer underneath, no Oring.http://lh4.ggpht.com/-Ij8orEww7Zw/T2_lXgs2vhI/AAAAAAAAQtM/pDbkPe_zDwA/s1600-h/032412412.jpg The Orings that seals the tube are on the piercing body and front end cap, same design as the Crosman 160/QB78. I'm guessing the nut is jammed in rust, that's why it's hard to remove. Here's a link to the owner's manual and parts diagram:https://support.crosman.com/hc/en-us/articles/203543370-1100-Owner-s-Manual-EVP-1968-1971- HTH and good luck!