Every six months, the flexible hoses which connect the steel brake lines with the front and rear brake assemblies should be inspected for cracks, chafing of the outer cover, leaks, blisters and other damage. Clean all dirt away from the ends of the hose, unscrew the metal tube nut with a flare nut wrench, pull the retaining clip straight out from the hose fitting at the frame bracket and remove the hose from the bracket. On front hoses, remove the hose mounting bolt from the bracket on the strut. Disconnect the hose from the caliper and discard the sealing washers. Attach the new brake hose to the caliper using new sealing washers. Tighten the brake hose banjo bolt and route correctly without twisting. When replacing brake lines, use the correct parts and purchase steel brake lines from a dealer parts department or auto parts store. Prefabricated brake line, with the tube ends already flared and fittings installed, is available at auto parts stores and dealer parts departments. These lines can be bent to the proper shapes using a tubing bender. Make sure the line is supported in the original brackets and has plenty of clearance between moving or hot components. After installation, check the master cylinder fluid level and add fluid as necessary. Bleed the brake system and test the brakes carefully before placing the vehicle into normal operation.