2.2.21. Draining of coolant Drain coolant as follows when cooling system has cooled down; z Remove cover from filler neck of radiator. z Remove drain plug in the cylinder block. EA6O5010 Improper mixing of anti-freeze and corrosion inhibitors may lead to lime and corrosion deposits in the engine cooling system which can jeopardize cooling efficiency. In such cases it is necessary to clean the cooling system at suitable intervals. Drain Valve EA5O4002 2.2.22. Cooling water z Regarding the cooling water that is to be used for engine, the soft water not the hard water must be z The engine cooling water can be used diluting it with antifreezing solution 40 % and the additive for used.
rust prevention (DCA4) 3 ~ 5 %. z The density of above solution and additive must be inspected every 500 hours to maintain it properly. NOTE : The proper density control of antifreezing solution and rust preventing additive will be able to prevent the rusting effectively and maintain the stable quality of engine. For the improper control might give the fatal damage to the cooling water pump and cylinder liners, detail care is needed. Technical Information - 33 -