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Bicycle brakes are crucial for safe riding, but they can often run into issues due to wear, improper adjustment, or damage. Understanding how to diagnose and fix common brake problems can save you time, money, and ensure your rides are safe. Here are 10 common bicycle brake malfunctions and how to address them:
1. Brakes Squeaking or Screeching
Cause: Often due to dirty or misaligned brake pads. Fix: Clean the rims and brake pads with a mild soap solution. If the noise persists, check the alignment of the brake pads and adjust them so they hit the rim squarely.
2. Brake Pads Not Hitting the Rim Evenly
Cause: Misaligned brake pads or a bent rim. Fix: Loosen the brake pad fixing bolt slightly and realign the pads so they make even contact with the rim. If the rim is bent, it may need professional truing.
3. Weak Braking Power
Cause: Worn brake pads, stretched cables, or dirty rims. Fix: Replace worn brake pads, adjust or replace stretched cables, and clean the rims to improve friction.
4. Brakes Rubbing Against the Wheel
Cause: Misaligned brake calipers or a bent wheel. Fix: Center the brake calipers by loosening the mounting bolt and adjusting their position. If the wheel is bent, it may require truing.
5. Brake Lever Pulls Too Close to the Handlebar
Cause: Stretched cable, low brake fluid (for hydraulic brakes), or worn brake pads. Fix: Adjust the cable tension using the barrel adjuster, bleed hydraulic brakes, or replace worn brake pads.
6. Brake Lever Feels Stiff or Hard to Pull
Cause: Corroded or kinked cable, or a problem with the brake caliper. Fix: Lubricate or replace the cable. Check the caliper for damage or debris and clean or replace as necessary.
7. Hydraulic Brake Fluid Leaking
Cause: Damaged hose, fittings, or seals. Fix: Identify the source of the leak and replace the damaged parts. It's often best to have hydraulic systems serviced by a professional.
8. Disc Brakes Making Noise
Cause: Dirty or glazed brake pads, or misaligned calipers. Fix: Clean the disc and brake pads with isopropyl alcohol. If the noise continues, check the caliper alignment and brake pad condition.
9. Brake Cables Fraying or Rusting
Cause: Wear and tear, exposure to elements. Fix: Replace frayed or rusted cables immediately to prevent brake failure. Consider using coated cables or cable protectors to extend life.
10. V-Brakes Not Releasing Properly
Cause: Sticky pivot points or a tight cable. Fix: Lubricate the pivot points on the brake arms. If the problem persists, check the cable tension and adjust as necessary.
General Maintenance Tips:
- Regularly inspect your brake system for wear and damage.
- Clean your bike, including brake components, after riding in wet or muddy conditions.
- Replace brake pads and cables before they become too worn.
- If you're unsure about a repair, consult a professional bike mechanic to avoid safety risks.
By understanding these common issues and how to fix them, you can keep your bicycle brakes in top condition, ensuring a safer and more enjoyable ride.