Group 26 Cooling System
Repair instructions
Repair instructions Cooling system, draining WARNING! Open the filler cap very carefully when the engine is hot. Steam or hot coolant can spray out. NOTE: Before draining the cooling system, remove the expansion tank cap. TAD
2 Check that all coolant runs out. There may be deposits inside the valve/plug which must be cleaned out. Otherwise there is a risk that water can be trapped and cause serious damage. Check whether the system has any other valves or plugs on the lowest points of the coolant lines. 3 Close the valves and reinstall plugs.
Cooling system, filling 1 WARNING! Open the filler cap very carefully when the engine is hot. Steam or hot coolant can spray out. NOTE: Only use Volvo Penta recommended coolant and mixtures. 2 P = fresh water drainage valve/plug
TWD
NOTE: Fill the system only with the engine shut down. Mix the correct volume of coolant in advance to be sure that the system is filled. Fill slowly to avoid the formation of air locks in the system. The air must be allowed to flow out through the filler opening and vent valves. 3 When filling an empty system or if the coolant level has for some reason fallen so low that it is not visible through the filler opening, open the vent valves on the turbocharger and the valves on the front of the heat exchanger during filling. 4 NOTE: The engine must not be started until the system has been bled and completely filled. If a space heater is connected to the engine cooling system, the heater control valve should be opened and the system vented during filling.
P = fresh water drainage valve/plug
1 Open all drain locations. Drain the coolant from the radiator using drain hoses. The drain nipple is located under the radiator.
5 Fill with coolant to approx. 50 mm (2") below the sealing surface of the filler cap. 6 Start the engine and let it run for about 1 hour. Switch off the engine, check the coolant level and add coolant if required.
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