Draining Coolant - Volvo Penta TAMD71B Instruction Manual

5.8 Draining coolant

Before draining the coolant, the engine should be stopped, the filler cap unscrewed and the
boat's water inlet closed. Then open the drain cocks or remove the drain plugs of the engine's
freshwater and raw water systems, see Figures.
Check that all the water runs out. There may be deposits by the cock/plug which must be removed.
Otherwise there is a risk that water may remain in the system and cause serious damage.
Check whether the installation has any more cocks or plugs on the cooling water and exhaust pipes
lowest points.
Remove the cover from the raw water pump and the cover on any extra pump. Close the cocks, fit the
plugs and put the cover on the raw water pump (and any extra pump fitted).
Pump out the engine room if required. Ensure that there are no leaks before you leave the
boat.
See the instructions in chap. 10.5.2 for topping up the coolant.
F = Freshwater cocks/plugs S = Raw water cocks/plugs V = Venting cock
Fig. 5.10 Engine from turboside
Fig. 5.12 Engine from not turboside
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AB Volvo Penta / Diesel Engine TAMD71B