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International Automotive Technicians Network
Rusty Brake Line Connections and Bleed Screws
Posted to Technical Discussion Forum on 5/28/2013 26 Replies

I was told by my new younger tech the way I loosen rusty brake line connections and bleed screws is not right and can break down the brake fluid? What I do if they will not break ltoose is first try PB Blast and let it sit, then I will try a 6 point socket and tap it with a hammer or a air chisel, sometimes this will break them. If none of this works I will use my torch to heat them and toss a cold wet rag on them and this works about 95% of the time. Now my new tech is telling me that the heat breaks the fluid down and he says if he can't get the bleed screws open he installs new calipers and wheel cylinders. Well I think this is wrong? For my long time customers I can't be doing this to and when I use heat, I always bleed all the brake fluid out anyways. I have yet had any problems with any of the cars I have done this to. I am just old school and trying to save my good customers money and keep them happy? Or is my tech right in doing what he does? Is there better ways of getting bleed screws open? With rusty brake lines is a bit easier to get lose. Any tips or info on this one? I know sometimes doing things old school are not the best, but sometimes they are the best way to. I am always out to learn new things. So let me know? Thanks!

Steven Bowles
Classic Car Care
Wood Dale, Illinois, USA

26 Replies Received (View Replies)