I am trying to remove brake cylinders from the rear drum brakes on a 2005 corolla. Up in north Ontario Canada. This car sees 6+ months of salt and slush per year. Anyways started with cheap line wrenches and fittings are Now a bit damaged at the cylinder. I have read conflicting posts about the use of heat on brake lines. I have a feeling that due to inexperience I will probably damage the flare nuts and will most likely have to replace the sections between the flex hose and the brake drum cylinder. I noticed this short portion has some sort of sheath on part of it. What is this?? Should this small portion be replaced with normal steel line or stainless?? I’ve been spraying the nuts at both the cylinders and where it meets the flex hose with liquid wrench and deep creep. Not getting anywhere. Havnt tried heat yet. Any suggestions???
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