Coolant, Draining
NOTICE! Remove the expansion tank filler cap and
close the
hull fitting before draining the cooling system.
WARNING!
Burn hazard.
Steam and hot fluid may spray out. Stop
the engine and allow it to cool before opening the filler
cap.
1 Connect drain hoses to the taps on the fresh water
system. Open all drain points.
The raw water system is drained by undoing hoses
at the lowest points of the system.
2 Check that all water drains out.
Check whether the installation has any further taps
or plugs at the lowest points of the cooling water
and exhaust lines.
3 Close the taps.
4 Pump the bilges out as necessary. Check that no
leakage occurs.
Coolant Level, Checking and
Topping Up
WARNING!
Stop the engine and let it cool before starting work on
the cooling system. Hot fluids and hot surfaces can
cause burns.
Filling
Flush the cooling system clean before new coolant is
added.
Close all
drain points and fill up with coolant to the cor-
rect level.
The engine must be stopped when the cooling sys-
tem is filled, and must not be started until the sys-
tem is vented and completely filled.. If a heating
installation is connected to the engine cooling system,
the heat control valve must be fully open and the instal-
lation vented during filling.
Check the hoses and joints and rectify any leaks.
Fill the system slowly! Filling must not be done so fast
that air locks are formed in the system. Air must be
allowed to flow out through the filler opening. Check
the coolant level after the engine has been run for
about an hour. Top up with coolant as necessary.
NOTICE! It is okey to lift off and heighten the expan-
sion tank to ease the filling.
Check and top up as necessary after the engine has
been running warm (open thermostat).
D1-13
F = Fresh water, drain tap
26-0 Cooling System, General
47701798 05-2013 © AB VOLVO PENTA 111
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