Thermostat Housing — 5.0L

Removal and Installation

1. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section.

2. NOTICE: Cover the accessory drive belts to prevent coolant contamination of the belts.

   Completely cover the accessory drive belts with waterproof plastic.

3. Release the clamp and disconnect the lower radiator hose from the coolant inlet connection.

4. NOTE: The quick connect coupling illustrated is to show the spring clip release location only. The quick connect coupling on the hose may differ.

   Pull the upper radiator hose spring clip up until the end of the clip is in the detent on the quick connect coupling and disconnect the upper radiator hose from the upper radiator hose T-connector.
   • To install, push the spring clip in place and connect the upper radiator hose quick connect coupling, making sure the coupling is secure.

5. Remove the thermostat housing bolts.
   • To install, tighten to 10 Nm (89 lb-in).

6. NOTE: The quick connect coupling illustrated is to show the spring clip release location only. The quick connect coupling on the hose may differ.

   Pull the upper radiator hose T-connector spring clip up until the end of the clip is in the detent on the quick connect coupling and remove the thermostat housing from the upper radiator hose T-connector.
   • Remove and discard the thermostat housing gasket.
   • To install, align the tab on the thermostat housing with the slot in the upper radiator hose T-connector.
   • To install, push the spring clip in place and connect the thermostat housing to the upper radiator hose T-connector quick connect coupling, making sure the coupling is secure.

7. To install, reverse the removal procedure.
   • Use a new thermostat housing gasket.

8. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding in this section.