Wheel Bearing Excessive Play Inspection

1. Switch the ignition ON (engine off).
2. Release the electric parking brake.
3. Switch the ignition off.
4. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
5. Remove the wheel and tire. (See WHEEL AND TIRE REMOVAL/INSTALLATION .)
6. Disconnect the electric parking brake motor gear unit connector. (See ELECTRIC PARKING BRAKE MOTOR GEAR UNIT REMOVAL/INSTALLATION .)
7. Remove the rear brake caliper component and suspend it out of the way using a cable. (See REAR BRAKE DISC REMOVAL/INSTALLATION .)
   Fig 1: Removing Rear Brake Caliper Component

   Courtesy of MAZDA MOTORS CORP.
8. Remove the rear disc plate. (See REAR BRAKE DISC REMOVAL/INSTALLATION .)
9. Install the magnetic base and dial gauge as shown in the figure and measure the wheel bearing axial excessive play.

Fig 2: Measuring Wheel Bearing Axial Excessive Play

Courtesy of MAZDA MOTORS CORP.