Vacuum Brake Booster Check Valve: Testing and Inspection

When checking the check valve, keep the check valve fit in the vacuum hose.
1. Remove the vacuum hose.

NOTE The check valve is press-fitted inside the vacuum hose.




2. Check the operation of the check valve by using a vacuum pump.

CAUTION If the check valve is defective, replace it as an assembly unit together with the vacuum hose.





TEST CHART