Thermostat: Service and Repair

Thermostat









Removal

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

2. Remove the generator.

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

4. Release the clamp and disconnect the oil cooler hose from the coolant connection.

5. Remove the 4 bolts, the coolant connection and the gasket.
- Discard the gasket.


6. Remove the thermostat and the O-ring seal.
- Discard the O-ring seal.


Installation

1. Position the thermostat and an new O-ring seal.
- Position the thermostat with the weep hole at the 12 o'clock position.






2. Position a new gasket, the coolant connection and install the 4 bolts finger tight. Tighten the bolts in the sequence shown in 2 stages.
- Stage 1: Tighten to 2 Nm (18 lb-in).

- Stage 2: Tighten to 10 Nm (89 lb-in).






3. Connect the oil cooler hose to the coolant connection and position the clamp.

4. Connect the lower radiator hose to the coolant connection and position the clamp.

5. Install the generator.

6. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Cooling System Draining, Filling and Bleeding.