INSPECTION AFTER REMOVAL
 
 Appearance

Check for correct assembly, damage and deterioration.
 
 Check Valve Airtightness

  • Use a handy vacuum pump (A) to check.
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    When connected to the booster side (B):

    Vacuum must be decrease within 1.3 kPa (9.8 mmHg, 0.38 inHg) for 15 seconds under a vacuum of −66.7 kPa (−500 mmHg, −19.69 inHg).
    When connected to the engine side (C):

    Vacuum must be not exist.

  • Replace vacuum hose assembly if vacuum hose and check valve are malfunctioning.