1. Gather Tools and Materials:
- Wrench set (metric and standard)
- Pliers
- Brake line wrench
- Penetrating oil (WD-40 or similar)
- Wire brush
- Safety glasses
2. Prepare the Vehicle:
- Park the vehicle on a level surface.
- Engage the parking brake and chock the wheels to prevent the vehicle from rolling.
- If possible, raise the vehicle using a jack and jack stands or ramps to provide better access to the brake lines.
3. Locate the Wheel Cylinder:
- Identify the wheel cylinder attached to the backing plate of the brake drum or disc brake assembly.
4. Disconnect the Brake Line:
- Locate the rusty brake line connected to the wheel cylinder.
- Use a brake line wrench to loosen the flare nut connecting the brake line to the wheel cylinder.
- Apply penetrating oil to the flare nut and surrounding area if it's rusty or stuck.
- Continue loosening the flare nut until it comes off completely.
5. Remove the Brake Line:
- Once the flare nut is removed, gently pull the brake line away from the wheel cylinder.
- Be careful not to damage the surrounding components while removing the brake line.
6. Clean the Area:
- Use a wire brush to clean the area around the wheel cylinder, removing any rust or dirt.
7. Install a New Brake Line:
- Thread a new brake line into the wheel cylinder.
- Hand-tighten the flare nut until it is snug.
- Use the brake line wrench to tighten the flare nut, ensuring it is secure.
8. Refill the Brake Fluid:
- Once the new brake line is installed, refill the brake fluid reservoir to the proper level as specified in your vehicle's owner's manual.
9. Test the Brakes:
- After reattaching the brake line and refilling the brake fluid, test the brakes by applying pressure to the brake pedal. Ensure the pedal feels firm and responsive.
10. Road Test:
- Take the vehicle for a short road test to ensure the brakes are functioning properly. Listen for any unusual noises or feel for any abnormalities in braking performance.
Safety Precaution:
- Brake fluid is harmful if ingested or inhaled, so handle it with care.
- Always wear safety glasses when working on brake systems.
- If the brake line is severely rusted or damaged, consider having a professional mechanic replace it for safety reasons.
