CHECK VALVE (TWO-WAY) INSPECTION [F2]

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1.  Remove the check valve (two-way). (See FUEL TANK REMOVAL/INSTALLATION [F2].)

2.  Inspect airflow of the valve under the following conditions.

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•  If not as specified, replace the check valve (two-way).

Apply pressure of -0.98—+13.7 kPa {-7.3—+102 mmHg, -0.28—+4.0 inHg} to port A	No airflow
Apply pressure +18.6 kPa {+140 mmHg, +5.5 inHg} or more to port A	Airflow
Apply pressure -4.9 kPa {-36.8 mmHg, -1.4 inHg} or more to port B	Airflow