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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis (Single Page) >> Brakes >> Parking Brake System >> Mechanical Brake System - Base (Service Information) >> Base - Service Information >> Diagnosis And Testing >> Base Brake System >> Road Testing >> Notes

Road Testing: Notes

  1. If complaint involved low brake pedal, pump pedal and note if it comes back up to normal height.
  2. Check brake pedal response with transmission in neutral and engine running. Pedal should remain firm under constant foot pressure.
  3. During road test, make normal and firm brake stops in 25-40 mph range. Note faulty brake operation such as low pedal, hard pedal, fade, pedal pulsation, pull, grab, drag, noise, etc.
  4. Attempt to stop the vehicle with the parking brake only (do not exceed 25 mph) and note grab, drag, noise, etc.
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