Cooling system Internal: Removing oil and grease Internal: Removing deposits 1. Run the engine until it has reached operating temperature and then drain the cooling sys- tem. 1. Run the engine until it has reached operating temperature and then drain the cooling sys- tem. 2. Remove the thermostats. 3. Fill the system with clean, hot water mixed with liquid dishwasher detergent intended for household machines. Concentration 1% (0.1/10 l). 2. Remove the thermostats. 3. Fill the system with clean, hot water mixed with some commercially available radiator detergent which is based on sulphamic acid and contains dispersing agents.
Follow the manufacturer's instructions for the concen- tration and cleaning period. 4. Warm up the engine for approximately 20-30 minutes. 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 system with clean, hot water and run the engine for about 20-30 minutes. 5. Drain the cooling system. 7. Drain the water from the cooling system. 6. Fill the cooling system with clean, hot water and run the engine for about 20-30 minutes. 8. Refit the thermostats. 7. Drain the water from the cooling system. 9.
Fill the cooling system with new coolant fol- lowing the specification under Coolants ear- lier in the document. 8. Refit the thermostats. 9. Fill the system with new coolant following the specification under Coolants earlier in the document. Environment Environment Avoid spillage and use a suitable container. Used coolant must be disposed of as specified in na- tional and international law. Avoid spillage and use a suitable container. Used coolant must be disposed of as specified in na- tional and international law. OPM 300 en-GB 53 © Scania CV AB 2015, Sweden