Navigator 4WD V8-5.4L (2010)
7. Disconnect the 2 auxiliary heater core tubes.
1. Position the auxiliary heater core partially out of the housing.
2. Disconnect the auxiliary heater core inlet tube.
3. Disconnect the auxiliary heater core outlet tube.
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Discard the O-ring seals.
8. Remove the auxiliary heater core.
9. NOTE: Use only the O-ring seals contained in the auxiliary heater core service kit.
NOTE: Verify that the heater core tube fittings are completely seated in the heater core before installing the heater core tube fitting clips.
To install, reverse the removal procedure.
10. Fill the engine cooling system. For additional information, refer to Cooling System &/or Engine Block Heater.
