Engine Coolant Thermostat Replacement L61

1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
2. Drain the cooling system. Refer to Cooling System Draining and Filling .
3. Remove the radiator outlet hose (1) from the thermostat housing. Refer to Radiator Outlet Hose Replacement



4. Remove the thermostat cover bolts and cover.
5. Remove the thermostat from the thermostat housing.
6. Remove and discard the thermostat cover O-ring seal.

1. Install a NEW thermostat cover O-ring seal into the recess groove.
2. Install the thermostat into the housing.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the thermostat cover bolts.

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




4. Install the radiator outlet hose (1) to the thermostat housing.
5. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
6. Fill the cooling system to specifications. Refer to Cooling System Draining and Filling .

Engine Coolant Thermostat Replacement LE5

1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
2. Drain the cooling system. Refer to Cooling System Draining and Filling .
3. Reposition the radiator outlet hose clamp (1) at the thermostat cover.
4. Remove the radiator outlet hose from the thermostat cover.



5. Reposition the radiator surge tank outlet hose clamp (1) at the thermostat cover.
6. Remove the radiator surge tank outlet hose from the thermostat cover.



7. Reposition the radiator outlet hose clamp (1) at the thermostat cover.
8. Remove the radiator outlet hose from the thermostat cover.



9. Remove the thermostat cover bolts and cover.
10. Remove the thermostat.
11. Remove and discard the thermostat cover O-ring seal.

1. Install a NEW thermostat cover O-ring seal.
2. Install the thermostat.

Notice: Refer to Fastener Notice in the Preface section.

3. Install the thermostat cover bolts.

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




4. Install the radiator outlet hose to the thermostat cover.
5. Reposition the radiator outlet hose clamp (1) at the thermostat cover. Proceed to step 11.



6. Install the radiator surge tank outlet hose to the thermostat cover.
7. Position the radiator surge tank outlet hose clamp (1) at the thermostat cover.



8. Install the radiator outlet hose to the thermostat cover.
9. Position the radiator outlet hose clamp (1) at the thermostat cover.
10. Fill the cooling system. Refer to Cooling System Draining and Filling .
11. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .

Engine Coolant Thermostat Replacement LNF