Volvo Penta TAMD74A-A Operator's Manual page 42

Maintenance: Freshwater system
40
Coolant level. Check
WARNING! Never open the pressure cap when
the engine is warm. Steam or hot fluid may spurt
out.
IMPORTANT! Check the coolant level on a cold
stationary engine.
Make sure the coolant level is approx. 5 cm (2")
below the top of the filler cap. Top up the coolant as
necessary, following the description below.
Coolant. Filling
CAUTION! Stop the engine and allow it to cool
down before filling. Hot oil and hot surfaces can
cause burns.
Topping up
Fill with coolant to the correct level through the filler
opening on the expansion tank. Fill slowly so that the
evacuated air is able to pass through the filler open-
ing.
IMPORTANT! Use the same type of coolant that
is already in the system.
IMPORTANT! If the heat exchanger is empty,
the coolant must be filled according to the de-
scription "Filling the cooling system when emp-
ty".
Filling the cooling system when empty
1. Open the ventilation cocks by the turbocharger
and the heat exchanger.
2. Make sure any other systems such as heater, wa-
ter heater, etc., connected to the cooling system
are also ventilated.
3. Fill with coolant through the filler opening on the
expansion tank.
4. Fill slowly so that the evacuated air is able to pass
through the ventilation cock/cocks and the filler
opening.