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Discussion Starter #1
What's the best way to unscrew an old brake line that's rusted onto the connector without breaking or ruining it?
 

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Nvr Been Bnnd
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With heat.
 

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First I would soak in penetrating oil overnight and use those flare wrenches designed for line fittings etc. You can get them cheap at Harbor Freight
 

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A broke kid with a bronco
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A really good penetrating oil, time, and a flare wrench. Without a flare wrench don't even try to remove. It will round off. Soak in penetrating oil a day (keep spraying it) then attempt to remove it.
 

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+2 on the pipe wrench - a monster pair of vice grips has done before too if it gets rounded. Flare wrench almost always works though.
 

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Discussion Starter #7
Thanks guys, I'll reply with my experience after my attempt this weekend. My main concern here is that this is the rear line that runs along the frame. I'll be disconnecting it to install the extended line for my new leaf springs. The parts stores in my area dont normally have lines this long if I ruin it and I hate waiting to finish part of the project once I start it!
 

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First I would soak in penetrating oil overnight and use those flare wrenches designed for line fittings etc. You can get them cheap at Harbor Freight
Dont get cheap flare wrenches...... they spread easy and will destroy the nut part
 

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The technique I use is to give them a hard push when you think you are on it good. A slow powerful turn almost always screws it up worse. So a quick hard shove is the way to go.
 

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A broke kid with a bronco
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I noticed that too when I did my lines. It was kind of weird.

Use nice flare wenches. I used craftsman and only f'ed one because I was turning the wrong way..... So don't do that lol
 

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Discussion Starter #12
The quick hard shove was very effective, THANKS! I replaced all lines I touched with new steel lines, had to bleed the whole system anyway, they were cheap enough. Rather be safe than sorry.
 
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