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Romulus

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Reply with quote  #1 
Ok, being back after long assignment overseas, I hit my 870 P for a deep clean. I removed the extension assembly all in one piece, but for the life of me I can't separate the coupling nut from the tube. I don't want to use channelocks on this, knowing I'll mar it or crush it. Any advice? Heat? Driving me crazy...also, should I use an anti seize, if and when I manage to decouple the assembly? Thanks,
Rom
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David Armstrong

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Reply with quote  #2 
I'll leave the official advice to JD on something like this, but I have had pretty good luck in the past using a fairly thin piece of rubber with channel locks or a vise to reduce the chance of marring a part.  Notice that said "reduce" not "eliminate" (speaking from a few bad experiences!).
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Romulus

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Reply with quote  #3 
I've used leather, rubber, strap wrench...the coupling nut is so soft it always gets a mark of some kind or other
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Romulus

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Reply with quote  #4 
Just tried again after some penetrating oil, and jeasus is it stuck. It's welded on!
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spm1us

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Reply with quote  #5 
Before you put any penetrating oil on it, you might try putting it in your oven @ 375-400 F. The heat will usually cause the two pieces of metal to move especially the threads. A heat gun that goes higher would also work. Kroil is one of the better penetrating oils and we use good old wax candle on pipe plugs in engine blocks after heating with a torch. Next best is 1/2 ATF and 1/2 Acetone just need time and patience.
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Romulus

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Reply with quote  #6 
Thanks for that suggestion...all options welcome, it's turning into a losing battle. Thanks again,
Rom
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spm1us

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Reply with quote  #7 
You ain’t seen the fat lady yet have you? When you do and she starts singing then you’ll know it’s time to throw in the towel! 👍👌😉
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Romulus

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Reply with quote  #8 
🤣🤣🤣🤣 I'm not giving up, when I'm done beating it, wrenching it, cooking it to death and it's ruined, that's when I swap on my spare. Thanks, gentlemen!
Rom
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Romulus

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Reply with quote  #9 
Whew...got it off. Resorted to channel lock and leather, gingerly, no apparent damage. We'll see next time how it disassembles. Thanks for the tips, gentlemen.
Rom
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