CHECK VALVE INSPECTION [SKYACTIV-D 2.2]

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1.  Remove the check valve. (See CHECK VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

2.  Verify that there is airflow through port B when pressure is applied from port A.

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•  If there is no airflow, replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

3.  Verify that there is no airflow through port A when pressure is applied from port B.

•  If there is airflow, replace the check valve. (See CHECK VALVE REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)