mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Heater Core > < Expansion Block/Orifice Tube|Description and Operation|Page 5652
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Heater Control Valve: Service and Repair

Heater Control Valve

Removal and Installation

Vehicles with 4.0L and oil cooler, without auxiliary climate control

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Vehicle Jacking and Lifting.

All vehicles

2. Drain the engine coolant. For additional information, refer to Cooling System &/or Engine Block Heater.

3. Disconnect the 2 inlet and outlet heater hose clamps.

4. Disconnect the heater control valve vacuum hose.

Vehicles with 4.0L and oil cooler, without auxiliary climate control

5. Remove the heater control valve bolt.

All vehicles

6. Remove the heater control valve.

7. NOTE: Lubricate the coolant hoses with plain water only if needed.

To install, reverse the removal procedure.

8. Fill the engine cooling system. For additional information, refer to Cooling System &/or Engine Block Heater.

Heater Core > < Expansion Block/Orifice Tube|Description and Operation|Page 5652