Vacuum Brake Booster Check Valve: Service and Repair

REMOVAL AND INSTALLATION

CAUTION:
^ When installing vacuum hoses, pay attention to the following points.
^ Do not apply any oil or lubricants to vacuum hose and check valve.





^ Insert vacuum tube into vacuum hose as shown.





^ Install check valve, paying attention to its direction.

INSPECTION

Hoses And Connectors
Check vacuum lines, connections and check valve for airtightness, improper attachment, chafing or deterioration.

Testing Check Valve





1. Check vacuum with a vacuum pump.
a. Connect to booster side. Vacuum should exist.
b. Connect to engine side. Vacuum should not exist.