Replacing the coolant and remove air from the engine cooling system
Fig.3.22.Location plugs drains cooling system: I - the cylinder block;II - at the bottom of the radiator
Fig.3.25.Bolt to remove air pockets from the engine cooling system
These operations are performed as well as gasoline engines. Location plugs drain holes shown in Fig.3.22, and the bolt to remove air from the system - on Fig.3.25.