Engine Coolant Thermostat Replacement L61

1. Drain the cooling system. Refer to Cooling System Draining and Filling .



2. Remove the thermostat housing to water pump feed pipe bolts.



3. Remove the thermostat housing to water pump feed pipe.



4. Remove the thermostat and retaining sleeve, noting orientation for installation.

1. Install the thermostat and retaining sleeve with the dimple placed into the housing slot.




Important: Lubricate the O-rings with coolant ONLY.

2. Install the thermostat housing to water pump feed pipe.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the thermostat housing to water pump feed pipe bolt.

Tighten
Tighten the bolt to 10 N·m (89 lb in).

4. Fill the cooling system. Refer to Cooling System Draining and Filling .

Engine Coolant Thermostat Replacement LX9

Tools Required

J 38185 Hose Clamp Pliers

1. Remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 3.5L.
2. Partially drain the cooling system. Refer to Cooling System Draining and Filling .
3. Use the J 38185 in order to reposition the hose clamp from the water outlet housing.
4. Remove the radiator inlet hose from the water outlet housing.



5. Remove the water outlet housing bolts.



6. Remove the water outlet housing.



7. Remove the thermostat.
8. Clean and inspect the water outlet housing gasket mating surfaces.

1. Install the thermostat.



2. Install the water outlet housing.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the water outlet housing bolts.

Tighten
Tighten the bolts to 25 N·m (18 lb ft).

4. Install the radiator inlet hose to the water outlet housing.
5. Use the J 38185 in order to reposition and install the hose clamp to the water outlet housing.
6. Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement in Engine Controls - 3.5L.
7. Fill the cooling system. Refer to Cooling System Draining and Filling .