Engine Coolant Thermostat Replacement RPO L61

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



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



3. Remove the feed pipe.



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

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




Important: Lubricate the O-ring with soapy water or coolant before installing the O-ring in the water pump.

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

Notice: Refer to Fastener Notice in the Preface section.




3. Install the bolt that secures the water pump feed pipe.

Tighten
Tighten the bolt to 10 N·m (18 lb in).

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