What Causes the Noise When the Brake Pedal is Released?
2 Answers
The reason for the noise when the brake pedal is released is either an incorrect contact angle between the brake pads and the brake disc or the recent replacement of new brake pads. If this occurs, the owner can visit a professional institution to have a specialist adjust it. Below is an introduction to the brake system: 1. Introduction: As the name suggests, it is a mechanical braking device that can slow down the vehicle, also known as a decelerator. 2. Structure: The car brake pedal is located under the steering wheel. Pressing the brake pedal causes the brake lever to be pressurized and transmitted to the brake shoes on the brake drum, which then clamp the brake disc. 3. Function: To slow down or stop the vehicle. The manual brake in a car is located next to the gear shift and is connected to the brake lever. Common examples also include bicycle brakes, which rely on rod-shaped brakes fixed to the frame or disc-shaped caliper brakes to slow down.
The brake pedal makes a creaking sound when lifted, which I also encountered last time. This is often caused by lack of lubrication on the spring or pivot connected to the pedal, resulting in dry friction noise. Especially for older cars that have been driven for four or five years, aging and hardened rubber components are more prone to making noise. I recommend first checking the U-shaped spring above the pedal and spraying some WD40. If the noise persists, it might be an issue with the internal diaphragm of the vacuum booster, which requires disassembly and part replacement. Another easily overlooked cause is loose mounting bracket screws for the pedal; I solved this by tightening them myself. Remember to regularly lubricate the pedal pivot to prevent most abnormal noises. Otherwise, long-term dry friction can lead to poor return, increased brake clearance, and safety risks.
