logan1 Posted April 22, 2010 Share Posted April 22, 2010 Hey guy, I'm trying to upgrade my old OEM rubber brake lines to SS brake lines. The problem is that the old rubber brake line just wont unscrew off the hard metal tube that comes form the master cylinder. I really don't want to damage the hard line or the little S- shaped hard line that are connected together using the rubber tube. I am scared that if i apply any more force i'll end up rounding out the little 10mm nut at on the hard line side. What would be the best solution to get the little piece of flex runner tube out without damaging the hard lines. Quote Link to comment Share on other sites More sharing options...
z2go Posted April 22, 2010 Share Posted April 22, 2010 From experience, you want to go to Sears and invest in a flare nut wrench. It's the only easy way to keep from rounding off the nut. I suggest also using some WD-40 and let it soak a bit first, to try to break up some of the rust and buildup. Then, using an open ended wrench on the rubber line side to hold it and the flare nut wrench on the other, slowly ease the nut out. For reference, here's the wrench I'm talking about: http://www.sears.com/shc/s/p_10153_12605_00978979000P?keyword=flare+nut+wrench Just don't get the wrong size on accident Quote Link to comment Share on other sites More sharing options...
logan1 Posted April 22, 2010 Author Share Posted April 22, 2010 Well I sprayed the nuts with liquid wrench last night and then soaked a small rag with liquid wrench and wrapped it around the junction of the hard line and the rubber line. I’ll go to the store today and buy the flare nut wrench you have recommended and see if that helps. thanx Quote Link to comment Share on other sites More sharing options...
logan1 Posted April 23, 2010 Author Share Posted April 23, 2010 Well I got the 10mm flared nut wrench but still not luck with getting the coupling to break. Here are a few pictures of my brake lines: Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted April 23, 2010 Share Posted April 23, 2010 When all else fails, use a vice grip or a miniature pipe wrench. Â You will need to replace the fitting before you put it back together though. Quote Link to comment Share on other sites More sharing options...
logan1 Posted April 24, 2010 Author Share Posted April 24, 2010 Thanx for all the help guys. I went to Wal-mart and bought a $15 propane torch and used it to heat the coupling. Once the metal was red hot; i use the flare nut wrench on the hard line side and a regular wrench on the rubber hose side and managed to get the threads to unbind. Once again thanx for all the helpful tips. Quote Link to comment Share on other sites More sharing options...
TheMission Posted April 24, 2010 Share Posted April 24, 2010 Congrats on the tenacity! I had similar issues and since I was scared I'd break something, I took steps and researched a bit, as if I broke it, I could learn how to fix it! - I still have the bookmark... Brake Line Basics Quote Link to comment Share on other sites More sharing options...
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