OPM 250 en-GB 46
©
Scania CV AB 2016, Sweden
Cooling system
Internal: Removing oil and grease
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 and then drain the cooling sys-
tem. See the section Draining coolant
.
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).
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.
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.
9. Fill the cooling system with new coolant as
described in the section Filling coolant
.
Internal: Removing deposits
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 and then drain the cooling sys-
tem. See the section Draining coolant
.
2. Remove the thermostats.
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 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.
7. Drain the water from the cooling system.
8. Refit the thermostats.
9. Fill the cooling system with new coolant as
described in the section Filling coolant
.
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