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Faunsdale, AL | No, I was trying to avoid taking out the whole line. I was able to take one end loose where it was cracked and get it up out of the hole it was in beside the engine of a Toyota Prius. It helps to have the surface where you want the metal to flow level if you can.
A steel or copper line, I would not hesitate to braze if it was vertical and I couldn’t get it level, but I didn’t want to try the aluminum out of position and I couldn’t get to it anyway.
The main thing is to have the ports open or a line loose so it won’t build up pressure.
I’ve used a repair rod with an acid core that worked somewhat on aluminum castings but never had much luck on thin tubing with it. That was always a very fine line between the rod flowing and the main casting slumping into a puddle. The rods from TSC (maybe Hobart?) were a solid alloy that has a low melting point so it should flow across the clean tubing before it slumps into a puddle. Practice on an old line would help. And propane torch is more appropriate heat than oxy-acetylene.
Edited by ccjersey 5/13/2025 20:37
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A/c line-5/8 aluminum leak
