How to Solve the Problem of Brake Pads Not Retracting?
2 Answers
The solutions for brake pads not retracting are: 1. Check if the return spring is broken, and replace it promptly if it is; 2. Check if the brake fluid is insufficient, and top it up if needed; 3. Inspect the brake wheel cylinder, pipelines, and joints for oil leaks, and go to a repair shop for replacement if leaks are found. The working principle of brake pads is to convert the kinetic energy of the moving vehicle into heat energy through friction between the brake pads and the brake drum, as well as between the tires and the ground, thereby stopping the vehicle. The materials used for brake pads include: 1. Asbestos, cellulose, sintered glass; 2. Carbon fiber friction materials; 3. Powder metallurgy friction materials; 4. Semi-metallic friction materials.
It's quite scary when I encounter the issue of brake pads not retracting while driving, which might be due to rust or sticking of the brake caliper guide pins. This causes the brake pads to constantly rub against the brake disc, making the car feel like it's slightly dragging. If you want to DIY, you can first try cleaning and lubricating the guide pins. Remove the tire, check the guide pins for dirt or rust, and apply a special lubricant gently. If that doesn't help, then inspect whether the brake hose has aged or deformed, limiting retraction. Don't delay fixing it for too long, as the brake disc could overheat, wear out, or even smoke, increasing the danger. For safety, regular maintenance should include periodic checks of the brake system, especially after rainy seasons or long-distance driving, to keep key components clean and rust-free, preventing many issues. If the problem persists after cleaning, don't risk driving—head to a professional repair shop immediately for a thorough inspection and replacement of necessary parts.
