A squealing brake on a motorcycle can have several potential causes. Here are some common reasons for brake squealing and possible solutions:
Brake Pad Glazing: Over time, brake pads can develop a glaze on their surface, reducing their effectiveness and causing squealing. To fix this, you can try sanding or roughening the brake pad surface with sandpaper to remove the glaze. If the glazing is severe, replacing the brake pads may be necessary.
Contaminated Brake Pads or Disc: Contaminants like oil, grease, or brake fluid can get onto the brake pads or brake disc, leading to squealing. Cleaning the brake pads and disc with a suitable brake cleaner can often resolve the issue. Be sure to use a cleaner specifically designed for brake components.
Worn Brake Pads: Brake pads have wear indicators that make a high-pitched noise when the pads are nearing their replacement point. If your brake pads are worn, the squealing may be a sign that they need to be replaced. Inspect the brake pads and replace them if they are worn beyond the recommended thickness.
Improper Alignment: Misaligned brake pads can cause uneven contact with the brake disc, resulting in squealing. Adjusting the brake caliper and ensuring proper alignment of the pads can help alleviate the issue. It's important to refer to the motorcycle's service manual or consult a professional mechanic for guidance on proper alignment procedures.
Heat Buildup: Excessive heat can contribute to brake squealing. If you frequently engage in heavy braking or riding in hilly areas, the brakes may overheat and squeal. In such cases, upgrading to high-performance brake pads that are designed to handle higher temperatures can help reduce or eliminate the squealing.
If you're unsure about performing any brake-related repairs or adjustments, it's advisable to consult a qualified motorcycle mechanic who can inspect and diagnose the specific cause of the brake squealing. They will be able to provide appropriate recommendations and ensure the brakes are in safe working condition.