Mazda2 BRAKE DISC/BRAKE DRUM INSPECTION

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Warning
•  Do not use the vehicle-equipped jack to jack up the vehicle for brake disc/brake drum 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/brake drum inspection.
Caution
•  Do not operate the brake pedal with the caliper/drum removed. The caliper/wheel cylinder may be damaged if the brake pedal is operated with the caliper/drum removed.
•  Do not operate the parking brake lever with the brake drum removed. The parts securing the parking brake cable may be damaged if the parking brake lever is operated while the brake drum is removed.

Required Tools

•  Micrometer
•  Torque wrench
•  Handle
•  Socket (21 mm)
•  Phillips screwdriver

Front Brake Disc Inspection

1.  Remove the front tire.

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

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

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•  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
20 mm {0.79 in}
Standard brake disc thickness (New part)
22 mm {0.87 in}

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

Tightening torque
108—147 N·m {12—14 kgf·m, 80—108 ft·lbf}

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


Rear Brake Drum Inspection

1.  Remove the rear tire.

2.  Release the parking brake.

3.  Remove the screws, then remove the brake drum from the vehicle.

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4.  Clean the brake drum surface where it contacts the shoe using brake cleaner.

5.  Measure the brake drum inner diameter.

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•  If the brake drum inner diameter is at maximum wear or more, the brake drum has to be replaced with a new one. Consult a Mazda Dealer for replacement.
Brake drum maximum wear
201.5 mm {7.933 in}
Standard brake drum thickness (New part)
200 mm {7.87 in}

6.  Install the brake drum to the vehicle and tighten the screws.

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

Tightening torque
108—147 N·m {12—14 kgf·m, 80—108 ft·lbf}

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

•  Parking brake lever stroke
•  Brake drag


Rear Brake Disc Inspection

1.  Remove the rear tire.

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

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

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•  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
7.5 mm {0.30 in}
Standard brake disc thickness (New part)
9.5 mm {0.37 in}

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

Tightening torque
108—147 N·m {12—14 kgf·m, 80—108 ft·lbf}

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

•  Parking brake lever stroke
•  Brake drag