Dakota 2WD V8-5.9L VIN Z LDC (2000)
Vacuum Check Valve HVAC: Service and Repair
Vacuum Check Valve Replacement 2
REMOVAL AND INSTALLATION
1. Remove the vacuum check valve. The valve is located in the vacuum supply tube (black) at the power brake booster on the left side of the engine
compartment.
2. Connect the test set vacuum supply hose to the heater-A/C control side of the valve. When connected to this side of the check valve, no vacuum
should pass and the test set gauge should return to the 27 kPa (8 in. Hg.) setting. If OK, go to step Step 3. If not OK, replace the faulty valve.
3. Connect the test set vacuum supply hose to the engine vacuum side of the valve. When connected to this side of the check valve, vacuum should
flow through the valve without restriction. If not OK, replace the faulty valve.
