CHECK VALVE OPERATION CHECK

1. caution The check valve should not be removed from the vacuum hose. Remove the vacuum hose (Refer to <L.H.drive vehicles> or <R.H.drive vehicles>).

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.