Vacuum Check Valve HVAC: Service and Repair

REMOVAL

NOTE: Note the orientation of the check valves in the vacuum supply line for correct reinstallation.

Vacuum Check Valves - Typical:

1. Remove the vacuum check valve from the fitting at the engine intake manifold and the accessory vacuum supply line.
2. Remove the vacuum check valve from the HVAC vacuum supply line fitting and the accessory vacuum supply line.

INSTALLATION
1. Using the orientation noted when removed, plug the vacuum check valve into the HVAC vacuum supply line fitting and the accessory vacuum supply line.
2. Using the orientation noted when removed, plug the vacuum check valve into the fitting at the engine intake manifold and the accessory vacuum supply line.