Diesel Data: Automotive Repair

Thermostat: Service and Repair

Thermostat Replacement
1. Drain the engine coolant.
2. Remove the lower radiator hose and the thermostat cover, then remove the thermostat.
3. Install the thermostat with a new rubber seal.
4. Refill the radiator with engine coolant, then bleed air from the cooling system.





5. Clean up any spilled engine coolant.