Whenever the vehicle is raised and securely supported on jackstands, inspect the rubber hoses that connect the steel brake lines to the front and rear brake assemblies for cracks, chafing of the outer cover, leaks, blisters, and other damage. Use a light and mirror for a thorough check. If any hose exhibits these conditions, replace it immediately. To replace the flexible hose, clean all dirt away from the hose and line fittings. Using a flare-nut wrench, disconnect the metal brake line from the hose fitting and plug the metal line to prevent leakage and contamination. Remove the brake hose bracket/fitting assembly by removing the mounting bolt. Unscrew the banjo bolt at the caliper and remove the hose, discarding the sealing washers. Attach the new brake hose to the caliper using new sealing washers and tighten the banjo bolt. Attach the brake hose bracket/fitting assembly to the vehicle, ensuring the hose isn't kinked or twisted. Connect the metal line to the hose fitting, tightening securely. Check that the suspension or steering components do not make contact with the hose. Check the master cylinder fluid level and add fluid as necessary. Bleed the brakes and test brake operation before resuming normal operation. When replacing metal brake lines, use the correct parts and avoid using copper tubing. Prefabricated brake lines with flared tube ends and fittings can be bent to the proper shapes using a tubing bender. Ensure the new line is well supported in the brackets and has sufficient clearance. Tighten the fittings securely. Check the master cylinder fluid level, bleed the brakes, and test brake operation before resuming normal operation.