Brake Pedal Free Height & Travel Measurement

PREPARATION
NOTE: Measure the brake pedal free height and travel with the engine running for full power brake operation and the parking brake fully released.

^ Block wheels.
^ Apply and release Park Brake. If park brake does not fully release, diagnose and repair parking brake before continuing. refer to
^ "START" engine for full power brake operation.

Brake Pedal Height/Travel Specifications:

FREE HEIGHT
NOTE: "A" Dimension to be measured to sheet metal from center of pad on the accelerator pedal side of the brake pedal pad.

1. Insert a slender, sharp-pointed prod through the floor carpet and sound deadener to the floor metal.





2. Measure the distance from floor pan to the top of the brake pedal pad. Measurement should be: 156-172 mm (6-7 inch).
3. If the position of the brake pedal is not within specification, check the brake pedal for missing, worn or damaged bushings or loose retaining bolts and replace if required.
4. If the brake pedal free height is still out of specification, check the brake pedal, power brake booster or brake master cylinder to be sure the correct parts are installed. Replace any incorrect, worn or damaged parts.

PEDAL TRAVEL
NOTE: "B" Dimension to be measured parallel to the vertical center line of the steering column with a 111 N (25 lb) load applied to the center line of the brake pedal pad.





1. Install the Rotunda Car Gauge or equivalent on the brake pedal.
2. Hook a steel measuring tape to the brake pedal.
3. Measure and record the distance from the brake pedal free height position to the reference point, which is at the six o'clock position on the steering wheel rim.
4. With the steel tape still hooked to the brake pedal,
- Apply a 111 N (25 lb) load to the center of the brake pedal;
- Maintain the brake pedal load;
- measure the distance from the brake pedal to the fixed reference point on the steering wheel rim parallel to the centerline of the steering column.
5. The difference between the brake pedal free height measurement and the depressed pedal measurement under a 111 N (25 lb) load should be 59.5 mm (2.34 inches) maximum.
6. If the brake pedal travel is more than the maximum dimension specification, attempt to adjust as follows:
^ Make several forward then reverse stops.
^ Move the vehicle in "REVERSE" and "FORWARD" for approximately 10 feet. Then apply the brakes, holding the brake pedal down until the vehicle is completely stopped.
^ This will actuate the brake pedal self-adjusters.
^ Apply and release the parking brake 2-5 times.
^ If these stops do not bring the brake pedal travel within specification, make several additional forward and reverse stops.
7. If the above steps do not bring the brake travel within specification, bleed the brake system. Refer to Hydraulic System.