Inspect the flexible hoses connecting the steel brake lines to the front and back brakes for cracks, chafing, leaks, blisters or any other form of damage at around every half year. Using a flare nut wrench clean off hose ends and unscrew the metal tube nut. Pull out the retaining clip from the frame bracket and remove the hose mounting bolt on the strut bracket. Disconnect it from caliper and throw away sealing washers. Tighten banjo bolt after attaching new brake hose to caliper with new sealing washers. Ensure correct routing of hose without twisting them. When replacing brake lines, use steel brake lines instead of copper tubing used in making them. Flared tube ends could be attached to pre-fabricated lines that have fixed fittings using a pipe bender that is meant for bending tubes. The new line should be held in place by original brackets and allowed adequate clearance between hot/moving parts. Finally, check master cylinder fluid level upon installation, top up if necessary fill brake system with bleed fluid then you can test brakes before normal operation resumes since it's mandatory to do so.