Mazda MX-5 Miata / Grand Touring. Manual — part 26

Fig. 4: Inspecting Brake Pedal Height
Courtesy of MAZDA MOTORS CORP.

BRAKE PEDAL HEIGHT ADJUSTMENT

1. Loosen the locknut and turn the push rod to adjust the pedal height.

2. Tighten the locknut.

Tightening torque

20.4-30.6 N.m {2.09-3.12 Kgf.m, 15.0-22.5 ft.lbf}

3. After adjustment, inspect the pedal play.

CAUTION:



The brake switch may not operate normally after adjusting the pedal
height. Whenever adjusting the pedal height, replace the brake
switch with a new one.



The interlock cable may not operate normally after adjusting the
pedal height. Whenever adjusting the pedal height, refer to the
interlock cable installation note. (See INTERLOCK CABLE
INSTALLATION NOTE .)

2008 Mazda MX-5 Miata Grand Touring

2008 BRAKES Conventional Brake System - MX-5 Miata

Fig. 5: Adjusting Brake Pedal Height
Courtesy of MAZDA MOTORS CORP.

BRAKE PEDAL PLAY INSPECTION

1. Depress the pedal several times to release the vacuum in the power brake unit.

2. Gently depress the pedal by hand, and measure the pedal play.



If not within the specification, inspect the wear of the clevis pin and replace it if there is any
malfunction.

Brake pedal play

2-5 mm {0.08-0.19 in}

PEDAL-TO-FLOOR CLEARANCE INSPECTION

1. Start the engine and depress the pedal with a pedal force of 147 N {15.0 kgf, 33.0 lbf} .

2. Measure the distance between the pedal pad center and the insulator, and verify that it is as specified.



If the pedal-to-floor clearance is less than the specification, check for air in the brake system.

Brake pedal-to-floor clearance (Brake pedal when depressed at 147 N {15.0 kgf, 33.0 lbf}

106.9 mm {4.209 in} or more

NOTE:



If there is no malfunction in the clevis pin, there is a possibility that
the power brake unit has some malfunction. Verify that there are no
malfunctions, and replace it if necessary.

2008 Mazda MX-5 Miata Grand Touring

2008 BRAKES Conventional Brake System - MX-5 Miata

Fig. 6: Inspecting Pedal-To-Floor Clearance
Courtesy of MAZDA MOTORS CORP.

BRAKE PEDAL REMOVAL/INSTALLATION

CAUTION:



The clearance between the brake switch and the brake pedal is
automatically adjusted to the correct amount when the brake switch
connector is connected after the brake switch has been properly
installed. If the brake switch is not properly installed or the connector
is connected before installation, the clearance may be incorrect,
causing a brake light malfunction. Therefore, always verify that the
brake switch is properly installed before connecting the connector.



Once the brake switch clearance has automatically been adjusted, it
cannot be adjusted again. Therefore, replace the switch with a new

2008 Mazda MX-5 Miata Grand Touring

2008 BRAKES Conventional Brake System - MX-5 Miata

1. Remove in the order indicated in Fig. 7.

2. Install in the reverse order of removal.

Fig. 7: Identifying Brake Pedal Components (With Torque Specifications)
Courtesy of MAZDA MOTORS CORP.

BRAKE PEDAL REMOVAL NOTE

one when replacing the power brake unit or the pedal, or performing
any procedure that changes the pedal stroke.



When replacing the brake pedal (AT), it is possible that the
installation of the interlock cable could become defective. Always
refer to the interlock cable installation note when replacing the brake
pedal. (See INTERLOCK CABLE INSTALLATION NOTE .)

NOTE:



When the brake switch connector is connected to the brake switch, the
clearance between the pedal and the brake switch is adjusted
automatically. However, this mechanism will only function one time.

2008 Mazda MX-5 Miata Grand Touring

2008 BRAKES Conventional Brake System - MX-5 Miata