O Ring

NorthMaine

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If you fall down alot the snow packing into the action will make it firm up not rattle. Just be warned you’ll only get one shot as it won’t be able to cycle another round.

Have you ever taken yours apart?

I just got a second trigger spring in the mail today from Ernie.
 

outdoorsman

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I replaced o-rings in the 760s I own this evening using Danco #40 o-rings. The original o-rings where intact though flattened. The replacements firmed up the pump and it feels very nice.

I had to pump a tremendous amount of heat into the tube using a propane torch to loosen the red loctite. Needless to say I did not re-loctite the threads.

3271704C-DBF3-4436-AA24-3D45C551B6F2.jpeg
 
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NorthMaine

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I replaced o-rings in the 760s I own this evening using Danco #40 o-rings. The original o-rings where intact though flattened. The replacements firmed up the pump and it feels very nice.

I had to pump a tremendous amount of heat into the tube using a propane torch to loosen the red loctite. Needless to say I did not re-loctite the threads.

View attachment 21514

Thanks for the update.

Did you lube them at all?
 

Hoops43

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Guess it's going to keep rattling. lol

Honestly-it isn't that hard (especially if I can do it!). The only problem you might run into is getting that action tube to "break off" the threads. Mine was very difficult to remove. It is a lot easier if you have a vice. But it literally comes right off once you get started and you can just pull the rod out and their is a groove for the o ring.
 

NorthMaine

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From what I have read, it seems pretty common to have to heat the tube to unscrew it from the receiver. As mentioned, that sounds like the hardest part of this job.
 

Mainewoods

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I'm pretty sure you want a 5mm punch. That's what I used and it fit snug, which is what you want. With the red loctite, you need the heat to break it.
 

NorthMaine

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Amazon has the o rings as well in packs of 3 or 4. Price works out to $3 or $4 a price. Looks like those Home Depot ones are the best option.
 

outdoorsman

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I'm pretty sure you want a 5mm punch. That's what I used and it fit snug, which is what you want. With the red loctite, you need the heat to break it.

Finding a proper fitting punch was a PITA. I snapped one punch and one screw driver. Luckily I had a hardened torx set that fit fairly well. I got the job done though ordered a tool for the job this evening. According to Loc-Tite 550 degrees Fahrenheit is needed to free red loc-tite.
 

Flatlander

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Never had to take my 7600 apart. Just wondering if taking the fore stock off lets you get access to the o ring ?
 

NorthMaine

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Finding a proper fitting punch was a PITA. I snapped one punch and one screw driver. Luckily I had a hardened torx set that fit fairly well. I got the job done though ordered a tool for the job this evening. According to Loc-Tite 550 degrees Fahrenheit is needed to free red loc-tite.

5mm seemed pretty easy to find on Amazon. That's probably what I'll do if/when I need to take it apart.
 

NorthMaine

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Never had to take my 7600 apart. Just wondering if taking the fore stock off lets you get access to the o ring ?

No, you need to unscrew the action tube from the receiver with is the PITA part being discussed here. You remove the forend, then use a punch through the holes in the action tube to unscrew the tube from the bolt in the receiver. Then you pull the barrel/action tube/slide tube off and you can pull the slide tube off the action tube to replace the o-ring. A few videos were posted regarding the teardown.
 

Mainewoods

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I've switched all my safeties out to be left-hand as well. On the second gun, that damn little spring went flying into the air, and I figured it was lost forever, until I heard it plop in the dogs water bowl. What luck!!
 




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