2. After pressing the lock, disconnect the wiring harness connector from the electromagnetic valve.
3. Disconnect the vacuum supply and discharge hoses from the valve fittings.
4. Press the retainer securing the electromagnetic valve to the vacuum accumulator bracket and remove the valve.
5. To check the valve, attach a medical syringe to the valve outlet (it is used as a pump), Press the plunger of the syringe - pressure should be created in the valve (it will be felt by the tendency of the syringe plunger to return to its original position). Then connect a 12V DC power source to the valve terminals, the valve should open and the pressure should disappear (the syringe plunger will sink to the stop without resistance). Otherwise, replace the valve.
6. Install the valve in the reverse order of removal.
The text of the article was obtained from the website «ChevyMan»