2.2.20. Filling-in of coolant (only when engine has cooled down) z Fill in the coolant slowly. z Make sure that all air can escape from the cooling system. z Run the engine briefly and then check Rediater Cap coolant level once more. If, in an exceptional case, the coolant level has to be checked when the engine is Rediater warm from operation, first turn the somewhat smaller cap with working valves to the first notch. Let off pressure and then close this cap again. After this the cap on filler neck can be removed without risk of scalding. Coolant must be added at the filler neck only. Do not put cold coolant into an engine which is warm from operation.
If no hot water (80 ° C) is available, add normal warm water very slowly as the engine runs EA5O3002 until the coolant level is correct. Ensure that the ratio of water to antifreeze is correct. Find the cause of the loss of coolant and have it eliminated. WARNING : If the cap with the working valves is opened, there is the rise that it will not close tightly again afterwards. The excess pressure required in the system will then no longer build up. Premature boiling occurs and coolant is lost. To prevent damage to the engine, open this cap only in exceptional circumstances and fit a new one as soon as possible afterwards. Technical Information - 32 -