GMC 15607207 Hose Assembly, Rear Brake

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About every six months, inspect the flexible hoses that connect the steel brake lines with the front and rear brake assemblies for cracks, chafing, leaks, blisters, and other damage. Use a light and mirror for a thorough check. If any defects are found, replace the hose with a new one. To replace the hose, clean the ends and disconnect the brake line from the hose fitting using a back-up wrench. Remove the U-clip from the female fitting at the bracket and detach the hose from the bracket. Disconnect the hose from the caliper, discard the copper washers, and attach the new hose to the caliper using new copper washers. Pass the female fitting through the frame or frame bracket and install the fitting with the least amount of twist in the hose. Install the U-clip in the female fitting at the frame bracket and attach the brake line to the hose fitting using a back-up wrench. Check that the suspension or steering components do not make contact with the hose. Bleed the brake system. When replacing metal brake lines, use the correct parts and avoid using copper tubing. Purchase steel brake lines from a dealer parts department or auto parts store. Prefabricated brake lines with flared tube ends and installed fittings are available. Ensure the new line is well supported in the brackets and has sufficient clearance. After installation, check the master cylinder fluid level, add fluid if necessary, bleed the brake system, and test the brakes before normal operation.

The correct parts should be used, and copper tubing should be avoided. Steel brake lines can be purchased from a dealer parts department or auto parts store. Prefabricated brake lines with flared tube ends and installed fittings are available.