Contents: Checking the pedal height ⇓ Checking the pedal play ⇓ Checking the distance from the pedal…⇓
Checking the pedal height
1. Measure the distance from the center of the top surface of the pedal pad to the floor covering and compare the obtained value with the specification (see the table at the beginning of the chapter).
2. If the pedal height is not within the standard (134 mm), check the following and correct the problem:
- The installation condition of the brake booster.
- Deformation or damage to the brake booster fork.
- Brake pedal installation condition.
- Worn brake booster fork connecting pin.
3. If no faults can be found, replace the brake pedal with a new one.
Checking the pedal play
1. Press the pedal several times to use up the vacuum in the brake booster.
2. Smoothly pressing the pedal with your hand, measure the pedal play. It should be 3-5 mm.
3. If the measured value of the brake pedal play is not within the norm, check the wear of the brake booster fork connecting pin. If defects are found, replace the connecting pin with a new one.
Note: If the connecting pin is OK, the possible cause of the malfunction is the brake booster. Check the brake booster for proper operation and replace it with a new one if necessary.
Checking the distance from the pedal to the floor
1. Start the engine and press the brake pedal with a force of 147 N (15 kgf).
2. Measure the distance from the center of the upper surface of the pedal pad to the floor covering. If the measured value is not within the standard (less than 95 mm), check for air in the brake lines and, if necessary, bleed the system.
