Replacing brake line

[Blazenlotus]

I noticed today I have a hole in one of my brake lines on my car. I haven't drove the car in a while and the rust looks like it finally finished out the line. So I got one side disconnected, and the other line is being a b*tch. I put the line wrench on it after soaking it with pb blast and nothing. I rounded off the fitting so now what do I do? This thing wont budge and I am not sure what to do. Is there a good way to get it off? Should I try to heat it with a torch or what? It is the main line right at the rear end where they split to go to each side. Please help

 

[Black Sheep]

Cut the line off at the nut and use a 6 point socket to get the nut out. You're replacing the line anyway, right? Or use vise grips.

 

[Blazenlotus]

I used a snap on line wrench ant still rounded it out tried vice grips but that thing wont budge.

 

[Blazenlotus]

Well after lots of cussing and a bloody knuckle it finally broke loose. Now to get a new line bent for it.

 

[brettlaage03]

I feel your pain. I just replaced all the brake lines in my cutlass. Every time I replaced a line a different line would leak until finally they were all replaced. I had to remove the proportioning valve to get the rounded fitting loose for the rear line.

 

[megaladon6]

for anyone looking at this later, a MAPP gas torch and vise grips. don't plan on saving the nut, just replace it and as much line as you can

 

[Blazenlotus]

I am sure there will be more to come but now I will be able to move it safely. The vice grips is what I finally had to use to crack it loose. Should I put thread tape on the ends of the new line when I got to put it back together or what should I use?

 

[megaladon6]

unfortunately, you use nothing. any/all sealants will either be destroyed by the brake fluid or will destroy the fluid/brake components.
best thing to do to keep things in good shape is regular fluid flushes.

 

[Blazenlotus]

Turns out the line was patched before there is a compression fitting on one end. Can I get another compression fitting and meet it to that one?

 

[megaladon6]

compression fittings are not a good idea on brake systems. get a brake line coupler.