Mazda disc brakes are self adjusting. Periodic adjustment of disc brakes is not required. When new disc brake pads have been installed, the brake pedal must be pumped to seat the pads against the rotors, prior to moving the vehicle. If the pads are not seated before the vehicle is put into gear or driving the vehicle, the brake pedal will have to be applied a number of times before any braking action will be achieved.
BRAKE PEDAL HEIGHT
See Figure 1
Measure the brake pedal height from the floor of the vehicle to the upper surface of the brake pedal. The distance should be 6.73-7.13 in. (171-181mm). If the brake pedal height is incorrect, adjust as follows:
- Unplug the stop lamp switch connector.
Loosen the locknut on the base of the stop light switch and move the switch to a position where it does not contact the brake pedal .
- Loosen the operating rod locknut. Adjust the height of the brake pedal by turning the operating rod using pliers. Once the desired pedal height is obtained, tighten the locknut on the operating rod.
- Screw the stop light switch until the it contacts the brake pedal stopper. Turn switch in until the brake pedal just starts to move. At this point, return (loosen) the stoplight switch 1 / 2 -1 turn and secure in this position by tightening the locknut.
- Connect the electrical connector to the stop light switch.
- Check to be sure that the stop lights are not illuminated with no pressure on the brake pedal.
- Without starting the vehicle, depress the brake pedal. If the brake light switch is properly connected, the brake lights will illuminate.
BRAKE PEDAL FREE-PLAY
- With the engine off, depress the brake pedal fully several times to evacuate the vacuum in the booster.
- Once all the vacuum assist has been eliminated, press the brake pedal down by hand and confirm that the amount of movement before resistance is felt is within 0.16-0.28 in. (4-7mm).
- If the free-play is less than desired, confirm that the brake light switch is in proper adjustment.
- If there is excessive free-play, look for wear or play in the clevis pin and brake pedal arm. Replace worn parts as required and recheck brake pedal free-play.