Why My Caliper Touching Rotor

Why My Caliper Touching Rotor, <h1>Why My Caliper Touching Rotor</h1> <h2>Introduction</h2> <p>As a car owner or enthusiast, you, blog, why-my-caliper-touching-rotor, KampionLite

Why My Caliper Touching Rotor

Introduction

As a car owner or enthusiast, you might have noticed a strange noise or vibration coming from your vehicle’s brakes. One potential issue that can cause such problems is when the caliper touches the rotor. This article will explore the possible reasons why your caliper is touching the rotor, as well as provide some solutions to fix this issue.

1. Misalignment of Caliper Mounting Bolts

The most common cause of a caliper touching the rotor is the misalignment of the caliper mounting bolts. The torque applied during installation might not have been enough, causing the caliper to shift and make contact with the rotor during braking.

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To fix this issue, follow these steps:

  1. Loosen all the caliper mounting bolts.
  2. Align the caliper properly by visual inspection.
  3. Tighten the caliper mounting bolts to the manufacturer’s recommended torque specifications.

2. Worn Out or Damaged Caliper Bushings

Another reason for the caliper touching the rotor is worn out or damaged caliper bushings. Over time, these bushings can become worn, causing the caliper to move and make contact with the rotor during braking.

To fix this issue, follow these steps:

  1. Remove the caliper from the rotor and suspension assembly.
  2. Inspect the caliper bushings for any signs of wear or damage.
  3. If necessary, replace the caliper bushings with new ones.
  4. Reinstall the caliper and ensure it is properly aligned.

3. Sticking or Seized Caliper Pistons

Sticking or seized caliper pistons can also cause the caliper to touch the rotor. When the piston fails to retract properly after applying the brakes, it will keep the brake pads in contact with the rotor and cause unwanted friction.

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To fix this issue, follow these steps:

  1. Remove the caliper from the rotor and suspension assembly.
  2. Inspect the caliper pistons for any signs of sticking or seizing.
  3. If necessary, clean the pistons using brake cleaner and a soft-bristle brush.
  4. If the pistons are severely stuck or seized, they may need to be replaced.
  5. Reinstall the caliper and ensure it is properly aligned.

4. Uneven Rotor Thickness

Uneven or excessive rotor thickness variation can lead to the caliper touching the rotor. If the rotor surface is not parallel or has significant variations in thickness, the caliper may make contact with the high points during braking.

To fix this issue, follow these steps:

  1. Measure the rotor thickness using a micrometer.
  2. If there are significant variations in thickness, the rotors may need to be resurfaced or replaced.
  3. Ensure the rotor surface is parallel by mounting it on a brake lathe and machining it to the correct specifications.

5. Warped Rotors

Warped rotors can also cause the caliper to touch the rotor. When the rotor becomes warped, it will no longer have a smooth and even surface. As a result, the caliper may make contact with the high points during braking.

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To fix this issue, follow these steps:

  1. Remove the rotors from the vehicle.
  2. Inspect the rotors for any signs of warping, such as visible unevenness or a pulsating brake pedal.
  3. If the rotors are warped, they may need to be resurfaced or replaced.
  4. Reinstall the rotors and ensure they are properly aligned.

Conclusion

If you notice that your caliper is touching the rotor, it is essential to address the issue promptly to avoid further damage to your braking system. Misalignment of caliper mounting bolts, worn out or damaged caliper bushings, sticking or seized caliper pistons, uneven rotor thickness, and warped rotors are some common causes of this problem. By following the appropriate steps and performing the necessary repairs or replacements, you can fix the issue and ensure safe and smooth braking performance for your vehicle.

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