Refueling Control Valve: Testing and Inspection

Check refueling control valve as follows:
1. Check visually for cracks in the appearance.
2. Check air continuity between port A and B.
Blow air into the port A. Air should flow freely through port B.
3. Blow air into port C and check there is no leakage.
4. Apply pressure to both port A and C [20 kPa (150 mmHg, 5.91 inHg)] and check there is no leakage from port B.
If NG, replace refueling control valve.