Cooling system Internal: Removing oil and grease Internal: Removing deposits Environment Environment Use a suitable container. Used coolant must be disposed of as specified in national and interna- tional laws and regulations. Use a suitable container. Used coolant must be disposed of as specified in national and interna- tional laws and regulations. 1. Run the engine until it has reached operating temperature if possible and then drain the cooling system following the previous de- scription. 1. Run the engine until it has reached operating temperature if possible and then drain the cooling system following the previous de- scription. 2. Remove the thermostats. 2. Remove the thermostats. 3.
Fill the cooling system with clean, hot water mixed with liquid dishwasher detergent for household machines. Concentration 1% (0.1/ 10 litres). 3. Fill the cooling system with clean, hot water mixed with radiator detergent which is based on sulphamic acid and contains dispersing agents. Follow the manufacturer's instruc- tions for the concentration and cleaning peri- od. 4. Run the engine until it has reached operating temperature for approximately 20-30 min- utes. Remember to switch on the cab heating system, if one is installed. 4. Run the engine for the specified time. Re- member to switch on the cab heating system, if one is installed. 5. Drain the cooling system. 6.
Fill the cooling system with clean, hot water and run the engine for about 20-30 minutes. 5. Drain the cooling system. 6. Fill the cooling system with clean, hot water and run the engine for about 20-30 minutes. 7. Drain the water from the cooling system. 8. Refit the thermostats. 7. Drain the water from the cooling system. 9. Fill the cooling system with new coolant as described in the next section. 8. Refit the thermostats. 9. Fill the cooling system with new coolant as described in the next section. 00:23-02 en-GB 34 © Scania CV AB 2016, Sweden