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Thread: Rusted bolts

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  1. #1
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    Rusted bolts

    I have a coworker in a mission to replace about 50 stainless nuts n bolts on like a couple of 10" PVC flange. The old steel rusted bolts r about 5 years old m rusted out good he said he can't flip out the old nuts, Amy recommmendatiom

  2. #2
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    Nov 2006
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    SE Wisconsin
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    It is going to sound crazy but after soaking with WD-40/PB Blaster/Liquid Wrench try to tighten the heads just a little bit to break them loose. You can also spend about 2-3 minutes tapping each bolt with a hammer before turning them. I know tightening is the exact opposite of your objective but after soaking, then tapping, it frequently works.

    If all that fails there is always the torch...

    Good Luck!

    Ken

  3. #3
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    Quote Originally Posted by chesehd View Post
    It is going to sound crazy but after soaking with WD-40/PB Blaster/Liquid Wrench try to tighten the heads just a little bit to break them loose. You can also spend about 2-3 minutes tapping each bolt with a hammer before turning them. I know tightening is the exact opposite of your objective but after soaking, then tapping, it frequently works.

    If all that fails there is always the torch...

    Good Luck!

    Ken
    I put up with the deletes because of this. I never once tried that.

    It does make sense. Ill plug the orange can K

    Thanks
    Customer is alWays opposite of Left

  4. #4
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    Quote Originally Posted by zartangreen View Post
    I put up with the deletes because of this. I never once tried that.

    It does make sense. Ill plug the orange can K

    Thanks
    I try to tighten almost everything before I loosen it. Works every time and you will rarely break bolts when you get in the habit of doing this. Also a big fan of WD-40. Don't care for PB or Aero-Kroil or any of these other home-made concoctions. I do like a product made by CRC called screw-loose. Seems to work pretty good.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  5. #5
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    Sep 2008
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    Western PA
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    I'm having a hard time understanding exactly what is going on, here.

    Is he able to loosen the bolt and remove it? Is the nut the problem?

    By "flip out the old nuts" do you mean that they are some sort of captive system that holds the nuts in place?

    Pictures would go a long way to clarifying if possible.


    I'm on board with a good soak-down with aerokroil and a couple of good taps with a hammer. That'll loosen the rust up good.


    If you've got some sort of captive system holding the nut, you may be into drilling and using an easy-out to pull the nuts out.

  6. #6
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    Sep 2010
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    miami,fl.
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    hey guys. sorry for the confuseing post i was beat after work i knocked out while writing it but to clear it all up. the original contractor used steel bolts so they are rusted out beyond anything so one of our techs has to remove the bolts and replace them with stainless steel bolts. you cannot tremove the nut so he just grinds off the nut, so now you have the hex head with the shaft of the bolt still in the flange it wont budge some slide out after tapping them and soaking them but others wont budge. today i spoke with him he said with the grinder he cut a fine slit in the edge of the flange and lightly pry it open while tapping them out. i guess thats working for him. i was curious to see what others do in this case.

  7. #7
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    Jul 2009
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    Kansas
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    Try a spud wrench to pry the flanges after you get a bolt out. http://toolmonger.com/2012/02/23/its-a-spud-wrench/

  8. #8
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    Quote Originally Posted by anthonyac1 View Post
    hey guys. sorry for the confuseing post i was beat after work i knocked out while writing it but to clear it all up. the original contractor used steel bolts so they are rusted out beyond anything so one of our techs has to remove the bolts and replace them with stainless steel bolts. you cannot tremove the nut so he just grinds off the nut, so now you have the hex head with the shaft of the bolt still in the flange it wont budge some slide out after tapping them and soaking them but others wont budge. today i spoke with him he said with the grinder he cut a fine slit in the edge of the flange and lightly pry it open while tapping them out. i guess thats working for him. i was curious to see what others do in this case.
    I think cutting the flange is a very bad idea. I would tap those bolts out with a punch, drill them out, or whatever. Cutting the flange would not even be an option to me.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  9. #9
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    Quote Originally Posted by Tech Rob View Post
    I think cutting the flange is a very bad idea. I would tap those bolts out with a punch, drill them out, or whatever. Cutting the flange would not even be an option to me.
    i can see where your comming from. i was curious to know i was there to replace 2 compressors on the rooftop as he was working on that. he said when he taps the bolt the pvc wants to crack. i was thinking a portable vise with a metal pin on the bottom side of the bolt then 2 small spacers or mini sockets on the top side with the hex head of the bolt in the middle of the 2 sockets then you get the vise and clamp down on the whole rig in wich the pin will push the bolt up and out since you have the spacers it will travel a few inches before hitting the other side of the vise...... if your still following me lol

  10. #10
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    Mar 2007
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    If that thing, whatever you're working on, is valved off and drained, then cut all of the bolts at the same time and just work the entire pipe and flange until all of the bolts fall right out.

    I know exactly what you mean. I've never done it, but I could see how maybe you could do that with a c-clamp and a short piece of pipe.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  11. #11
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    Would a ball joint splitter be any use? Not sure if i'm picturing it correctly.

  12. #12
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    Aug 2009
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    I think you mean a ball joint press. That should work, or maybe a pitman arm puller. Trouble is these aren't things that are usually carried in a service truck.

    Quote Originally Posted by monkeyspanners View Post
    Would a ball joint splitter be any use? Not sure if i'm picturing it correctly.

  13. #13
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    Mar 2007
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    I've never seen stainless nuts and bolts rusted so bad that they couldn't be taken apart. If they're plain old grade 2 steel nuts and bolts like are used everywhere, I'd skip the oil and go right to a grinder with a cutoff wheel. That'll make short work of those things without melting the PVC flange.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

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