Tools Required

J 28662 Brake Pedal Effort Gauge.

Important: With the ignition OFF and the brakes cool, apply the brakes three to five times or until the brake pedal effort increases significantly, in order to deplete the vacuum brake booster power reserve.

1. Deplete the vacuum brake booster power reserve.



2. Install the J 28662  (1) to the brake pedal (3).
3. Measure and record the distance (a) from the brake pedal (3) to the rim of the steering wheel (2); note the points of measurement.



4. Apply and maintain a force of 445 N (100 lb) to the brake pedal, as indicated on the J 28662  (1).
5. While maintaining 445 N (100 lb) of force to the brake pedal (3), measure and record the distance (b) from the same point on the brake pedal (3) to the same point on the rim of the steering wheel (2).
6. Release the brake pedal (3) and repeat steps 4 and 5 to obtain a second measurement.
7. Average the first and second measurements recorded for the two braking applications.
8. Subtract the initial unapplied distance (a), from the average applied distance (b) to obtain the brake pedal travel measurement (c).

Specification
Maximum brake pedal travel[dash ]measured with the ignition OFF, vacuum brake booster power assist depleted, and the brakes cool: 90 mm (3.54 in).