2500 4x2 Pickup V8-318 5.2L Magnum (1994)
Vacuum Check Valve HVAC: Service and Repair
1. Unplug the vacuum supply line at the intake manifold.
2. Note the orientation of the check valve in the vacuum line for correct installation. The black colored end of the valve should be oriented towards
the intake manifold, and the natural colored end towards the vacuum reservoir.
3. Unplug the valve from the vacuum supply line fittings.
4. Reverse the removal procedures to install.