Brake Pedal Assy: Testing and Inspection
BRAKE PEDAL HEIGHT1. Turn back the carpet etc. at under the brake pedal.
Measure Brake Pedal Height:
2. Measure the brake pedal height as illustrated. If the brake pedal height is not within the standard value, adjust as follows.
Standard value (A): 177 - 182 mm (7.0 - 7.2 inch)
1) Disconnect the stop light switch connector, loosen the lock nut, and move the stop light switch to a position where it does not contact the brake pedal arm.
2) Adjust the brake pedal height by turning the operating rod with pliers (with the operating rod lock nut loosened), until the correct brake pedal height is obtained.
3) Screw in the stop light switch until it contacts the brake pedal stopper bust before the brake pedal is caused to move). Back off the stop light switch 1/2 to 1 turn and secure by tightening the lock nut.
4) Connect the connector of the stop light switch.
5) Check to be sure that the stop light is not illuminated with the brake pedal released.
Reference value (B): 0.5 - 1.0 mm (0.02 - 0.04 inch)
6) On vehicles with automatic transaxle, check the shift-lock mechanism.
3. Put back the carpet to it's original position.
BRAKE PEDAL FREE PLAY
1. With the engine stopped, press the brake pedal two or three times. After eliminating the vacuum in the power brake booster, press the pedal down by hand, and confirm that the amount of movement before feeling resistance is met (the free play) is within the standard value range.
Standard value (C): 3 - 8 mm (0.1 - 0.3 inch)
2. If the free play is less than the standard value, confirm that the clearance between the stop light switch and brake pedal is within the standard value.
If the free play exceeds the standard value, it is probably due to excessive play between the clevis pin and brake pedal arm. Check for excessive clearance and replace faulty parts as required.
CLEARANCE BETWEEN BRAKE PEDAL AND FLOOR BOARD
1. Turn back the carpet etc. at under the brake pedal.
2. Start the engine, depress the brake pedal with approximately 500 N (110 lbs.) of force, and measure the clearance between the brake pedal and the floorboard.
Standard value (D): 80 mm (3.1 inch) or more
If the clearance is less than the standard value, check for air trapped in the brake line and for brake fluid leaks. If necessary, check the brake system mechanism (excessive shoe clearance due to faulty auto adjuster) and repair faulty parts as required.
4. Put back the carpet to it's original position.