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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System [Conventional Brake System] >> Power Brake Unit Inspection >> Using SST >> Vacuum loss inspection

Vacuum loss inspection

  1. Start the engine.
  2. Depress the brake pedal with a force of 200 N {20.4 kgf, 45.0 lbf}  .
  3. Stop the engine when the vacuum gauge reading reaches 68 kPa {510 mmHg, 20 inHg}  with the pedal depressed.
  4. With the engine off, observe the vacuum gauge for 15 s  .
  5. If the gauge has dropped 3.3 kPa {25 mmHg, 0.97 inHg}  or less, the unit is normal.