Cooling system
07
When an extra expansion tank is installed the en-
gine’s expansion tank must be completely filled with
coolant.
NOTE! The keel cooled version of D9 and D6 must
always have an extra expansion tank.
The expansion tank volume in the extra tank should
be 5% of the
total capacity of the cooling system.
Of this volume:
5% is meant for coolant expansion when hot (ex-
pansion volume),
5% is meant for the difference between MAX and
MIN levels
5% is reserve volume.
A divider can be used to improve deairing of the ex-
pansion tank.
. Expansion volume, 5%
2. Reserve volume, 5%
3. Divider
4. Pressure cap
5%
5%
5%
MIN
3
4
2
The expansion tank of the engine must have a sepa-
rate vent (3) to the extra tank connected below MIN
level.
NOTE! If there are no manual venting nipples, the
hose (3) must be continously inclining.
The hoses must be able to withstand temperatures
up to 5°C (240°F).
The engine’s pressure cap is replaced with a sealed
cap. The standard engine venting hose from the
thermostat housing can be connected to the extra ex-
pansion tank below the MIN level to facilitate venting
when topping up with coolant.
To improve pressurisation of the cooling system it is
recommended to keep the temperature high in the
expansion tank. If the tank is located in a cold place,
the tank should be in a sheltered position and insu-
lated.
. Engine expansion tank
2. Extra expansion tank
3. Separate venting hose
3
2
MIN
MAX
Summary of Contents for D11 series
Page 1: ...Marine Propulsion Diesel Engines Installation 1 1 D E D5 D16 series ...
Page 2: ......
Page 208: ...206 References to Service Bulletins Group No Date Concerns ...
Page 209: ...207 Notes ...
Page 210: ...208 Notes ...
Page 212: ...7748655 English 11 2007 ...