CHECK VALVE OPERATION CHECK


1.
caution The check valve should not be removed from the vacuum hose.
Remove the vacuum hose (Refer to ).

2.
caution If the check valve is defective, replace it as an assembly unit together with the vacuum hose.
Check the operation of the check valve by using a vacuum pump.
Vacuum pump connection
Normal condition
When connected to the booster side (A)
Vacuum is generated and maintained
When connected to the engine side (B)
No vacuum is generated





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