Mazda CX-9 BRAKE DISC INSPECTION

id942000401100

  Warning
  • Do not use the vehicle-equipped jack to jack up the vehicle for brake disc inspection. The jack may slip during servicing and cause an accident. Always use a lift or a garage jack to jack up the vehicle and use a rigid rack when performing brake disc inspection.

  Caution
  • Do not operate the brake pedal with the caliper removed. The caliper may be damaged if the brake pedal is operated with the caliper removed.

Required tools

• Micrometer
• Torque wrench
• Handle
• Socket (17 mm, 21 mm)
• Pliers

Front Brake Disc Inspection

1. Remove the front tire.

2. Detach the clip from the shock absorber and disconnect the brake hose.

ac9wzw00001891

3. Remove the caliper installation bolt on the underside of the vehicle.

ac9wzw00001892

4. Move the caliper in the direction shown by the arrow and remove it from the mounting support.

5. Hang the removed caliper in a place out of the way using a cable.

ac9wzw00001893

6. Remove the disc pad from the mounting support.

7. Clean the brake disc surface where it contacts the pad using brake cleaner.

8. Measure the thickness of the brake disc using a micrometer.

ac9wzw00001894

  • If the brake disc thickness is the usable minimum or less, the brake disc has to be replaced with a new one. Consult a Mazda Dealer for replacement.

  Brake disc usable minimum thickness

  26 mm {1.03 in}

  Standard brake disc thickness (New part)

  28 mm {1.10 in}

9. Install the disc pad to the mounting support.

10. Move the caliper in the direction shown by the arrow and remove it from the mounting support while being careful not to distort the brake hose.

ac9wzw00001895

11. Tighten the caliper installation bolt to the specified torque.

  Tightening torque

  84―93 N·m {8.6—9.4 kgf·m, 62—68 ft·lbf}

12. Install the brake hose to the shock absorber using a clip.

ac9wzw00001896

13. Install the front tire and tighten the nuts to the specified torque.

  Tightening torque

  88—118 N·m {9.0—12 kgf·m, 65—87 ft·lbf}

14. After installation, pump the brake pedal a few times and verify that the brakes do not drag.

Rear brake disc inspection

1. Remove the rear tire.

2. Remove the disc pad from the mounting support.

3. Clean the brake disc surface where it contacts the pad using brake cleaner.

4. Measure the thickness of the brake disc using a micrometer.

ac9wzw00001511

  • If the brake disc thickness is the usable minimum or less, the brake disc has to be replaced with a new one. Consult a Mazda Dealer for replacement.

  Brake disc usable minimum thickness

  16 mm {0.63 in}

  Standard brake disc thickness (New part)

  18 mm {0.71 in}

5. Install the rear tire and tighten the nuts to the specified torque.

  Tightening torque

  88—118 N·m {9.0—12 kgf·m, 65—87 ft·lbf}

6. After installation, pump the brake pedal a few times and inspect the following:

  • Parking brake lever stroke
  • Brake drag