GM 25818924 Pipe Assembly, Brake Pressure Mod Valve Front

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About every six months, it is important to inspect the flexible hoses that connect the steel brake lines with the front and rear brake assemblies for any cracks, chafing, leaks, blisters, or other damage. This inspection should be done with the vehicle raised and securely placed on jackstands, using a light and mirror for a thorough check. If any of the above defects are found, the hose should be replaced with a new one. To disconnect a brake hose from the brake line, clean the ends of the hose and detach any brackets or wiring harnesses securing it to other components. Unscrew the metal tube nut with a flare nut wrench and remove the U-clip from the female fitting at the bracket. Disconnect the hose from the caliper, discarding the sealing washers, and attach the new hose to the caliper or wheel cylinder using new sealing washers. To reattach a brake hose to the metal line, insert the end of the hose through the frame bracket, ensuring it is not twisted, and tighten the tube nut fitting securely. Install the U-clip at the frame bracket and check for any contact with suspension or steering components. Bleed the brake system. 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 from moving or hot components. After installation, check the master cylinder fluid level, add fluid if necessary, bleed the brake system, and carefully test the brakes before normal operation of the vehicle.

To reattach a brake hose to the metal line, insert the end of the hose through the frame bracket, ensuring it is not twisted, and tighten the tube nut fitting securely.