Volvo Penta TAMD71B Instruction Manual page 50

10.5.2 Filling with coolant
Note! Do NOT open the pressure cap or
the venting nipples on a hot engine.
Steam or hot coolant can spray out and
the system pressure will be lost.
Filling should be carried out with the engine
stopped. Do not fill so quickly that air locks form
in the system. Allow the air to flow out via the fill-
ing opening or vent cock.
When filling an empty system, or if the coolant
level for some reason has dropped so low that it
cannot be seen through the filling opening, open
the vent cock at the turbocharger during filling.
The engine must not be started until the sys-
tem has been vented and completely filled.
If a heater system is connected to the engine's
cooling system, the heater control valve should
be opened and the unit vented during filling.
Fill with coolant* to 5 cm (2") beneath the seal-
ing surface of the filler cap or to between the
MIN and MAX marks on the separate plastic ex-
pansion tank (accessory). For information on
coolants refer to: "Coolant" in chap. 4.3. When
topping up, use the same coolant mixture as is
already in the cooling system.
Allow engine to stand 1 hour after filling. Then
top up the coolant if required, start the engine
and warm it up. Check the coolant level.
*Note! See chapter 13.5 for coolant system capacity.
48 AB Volvo Penta / Diesel Engine TAMD71B
Fig. 10.7 Venting cock in cooling system