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What causes front rim to lock up after changing brakes and rotors?

Several issues could cause a front rim to lock up after changing the brake pads and rotors:

1.Incorrect Installation: Improper installation of brake components can lead to various problems, including a locked rim. Issues such as misaligned, damaged, or incorrectly sized brake pads can cause the brake assembly to malfunction and lock up the wheel.

2.Air in Brake Lines: Trapped air in the brake lines can result in a loss of hydraulic pressure, leading to a locked wheel. This can occur if the brake system was not properly bled after changing the components.

3.Faulty Brake Caliper: A faulty brake caliper can cause the brakes to malfunction. In some cases, a seized brake caliper can result in a locked wheel, as the brake pads will remain engaged with the rotor.

4.Issues with the Master Cylinder: A faulty or damaged master cylinder can cause uneven braking or lock-up of one wheel. Problems with the master cylinder may also lead to leaks or insufficient brake fluid, which could affect the braking system's performance.

5.Proportioning Valve Problems: In vehicles equipped with a proportioning valve, malfunctions in this valve can lead to uneven brake pressure distribution. This can result in one wheel locking up while the others don't receive enough braking force.

6.Improper Brake Pad Selection: Using incompatible brake pads with your rotors or incorrect brake pad material (such as organic instead of ceramic) can lead to performance issues and potential lock-ups.

7.Malfunctioning Wheel Bearing: A worn or damaged wheel bearing can cause the wheel to lock up, particularly while turning.

8.Damaged or Contaminated Brake Fluid: Brake fluid can deteriorate over time and absorb moisture. If the brake fluid is old or contaminated, it may not perform its intended function correctly and can contribute to brake-related issues.

To address this problem, it is crucial to re-inspect the brake installation and check for any irregularities or errors. Verify the proper alignment of brake components, bleed the brake lines to remove any air pockets, and ensure there are no issues with the brake caliper, master cylinder, or any other related components. If you encounter any abnormalities or continue experiencing the problem, it's advisable to consult with a qualified mechanic for proper diagnosis and repair.