For 1990-2009 cars

## Engine Coolant Thermostat Replacement 3.6L Engine

### Removal Procedure

1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
2. Place thermostat housing in a soft jaw vice.

Caution: Refer to Safety Glasses Caution in the Preface section.

3. While depressing the thermostat (3) rotate the retaining bar (2) anti-clockwise in the housing (1) until it clears the retaining lugs (4).
4. Carefully release the thermostat spring force.
5. Remove the thermostat from it's housing.

### Installation Procedure

1. Ensure that the thermostat housing in clean and free of damage.
2. While pressing the thermostat (3) rotate the retaining bar (2) clockwise in the housing (1) until it locks into the retaining lugs (4).
3. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .

## Engine Coolant Thermostat Replacement 6.0L Engine

### Removal Procedure

Notice: Refer to General Repair Instructions in the Preface section.

1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement.
2. Place thermostat housing in a soft jaw vice.

Caution: Refer to Safety Glasses Caution in the Preface section.

3. Press and rotate the springs of the thermostat to release it from the thermostat housing.
4. Remove the thermostat from the thermostat housing.

### Installation Procedure

1. Assure that the air bleed ball (1) is not jammed by slightly shaking the assembly.
2. Place the thermostat (1) assembly into the thermostat housing (2).
3. Install the thermostat, by rotating and locking it into the thermostat housing.
4. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement.