Inspection After Removal

Appearance 

Check for correct assembly, damage and deterioration.

Check Valve Airtightness 

• Use a handy vacuum pump (A) to check.

  Courtesy of NISSAN NORTH AMERICA, INC.

  When connected to the booster side (B):

  Vacuum should decrease within 1.3 kPa (9.8 mmHg, 0.38 inHg, -0.013 bar) for 15 seconds under a vacuum of -66.7 kPa (-500 mmHg, -19.70 inHg).

  When connected to the engine side (C):

  Vacuum should not exist.

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