Freshwater System; Coolant Level Check; Coolant Filling - Volvo Penta D12-AUX Operator's Manual

Freshwater system

Maintenance: Freshwater system

Coolant level check

Coolant level can be checked through a level glass on
top of the expansion tank. The green float must be vi-
sible in the level glass.
The coolant level should be about five centimetres
(2") below the pressure cap sealing plane in the ex-
pansion tank.
IMPORTANT! When topping up, use the same
coolant mixture as is already in the cooling sys-
tem.

Coolant filling

Topping up
Fill the freshwater system with coolant to the correct
level through the filler opening in the expansion tank,
for correct level, refer to section "coolant level check".
Fill slowly so that evacuated air is able to pass the fil-
ler opening.
NOTE! For coolant specification refer to section
"technical data coolant".
Filling when the system is empty
1. Open the air ventilation cock that is placed by the
turbo charger
2. Make sure that systems connected to the cooling
system also are ventilated, e.g. heater, water
heater.
3. Fill the freshwater system with coolant through
the filler opening in the expansion tank. Fill slowly
letting air bleed from the ventilation cock and the
filler opening. When air-free coolant flows out, clo-
se the ventilation cock and continue to fill to the
correct level, for correct level, refer to section
"coolant level check".
4. Start the engine and run it under no load until the
thermostat valve opening temperature is reached.
IMPORTANT! The engine must not be
operated under full load before the system has
been bled and topped up.
5. Check air vent for leakage.
6. Stop the engine and allow it to cool. Check the
coolant level and top up if needed.
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