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Home >> Hummer >> 2008 >> H3 Adventure, Automatic >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Diagnostic Information and Procedures >> Brake Pedal Travel Measurement and Inspection >> Inspection Procedure

Inspection Procedure

  1. Install the J 28662  to the brake pedal. See Special Tools .
  2. Release the park brake.
  3. Place the engine switch in the ON position.
    4. Fig 1: Measuring Brake Pedal Travel
    GM681788Courtesy of GENERAL MOTORS CORP.
  4. Measure and record the distance (1) from the brake pedal to the rim of the steering wheel; note the points of measurement.
  5. Apply and maintain the brakes with 134 N (30 lb) of force to the brake pedal, as indicated on the J 28662  . See Special Tools .
  6. While maintaining 134 N (30 lb) of force to the brake pedal, measure and record the distance (2) from the same point on the brake pedal to the same point on the rim of the steering wheel.
  7. Release the brakes and repeat steps 4 and 5 to obtain a second measurement. After obtaining a second measurement, proceed to step 8.
  8. Average the first and second measurements recorded during the two applies of the brakes.
  9. Subtract the initial measurement, unapplied (1), from the averaged, applied measurement (2) to obtain the brake pedal travel distance.

    Specification:  Maximum brake pedal travel (measured with the ignition ON, and the brakes cool): 61 mm (2.40 in)

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