Inspection
INSPECTION AFTER REMOVAL
Appearance
Check for correct assembly, damage and deterioration.
Check Valve Airtightness
Use a handy vacuum pump (commercial service tool) (A) to check.
When connected to the booster side
:
Vacuum should decrease within 1.3 kPa (9.8 mmHg, 0.38 inHg) for 15 seconds under a vacuum of –66.7 kPa (–500 mmHg, –19.70 inHg).
When connected to the engine side
:
Vacuum should not exist.
Replace vacuum hose assembly if vacuum hose and check valve are malfunctioning.