(1) Use soft water such as snow water and rain water as cooling water as much as possible. River water, spring water, and well water are all hard water, contain many kinds of minerals, and will precipitate out when the water temperature rises. It is easy to form scale in the cooling system, so it cannot be used directly. If you really want to use this type of water, it should be boiled, precipitated, and used for surface water. In the absence of water to make up, use clean, contaminated soft water.
(2) Keep an appropriate surface, that is, the upper water room shall not be lower than 8mm below the inlet of the inlet pipe, and if it is too low, it shall be filled in time.
(3) Master the correct method of adding water and water. When the diesel engine overheats and lacks water, it is not allowed to add cold water immediately, and the load should be removed. After the temperature of the water drops, it is slowly added in a trickle under the operating state. In the event of a water cut during the operation of a diesel engine, water must not be added immediately, so as to avoid the occurrence of stress, cracks, or accidents due to uneven cooling and heating of the parts. At this time, after the diesel engine is shut down, add water before the standby temperature drops to the natural temperature. In cold weather, water should not be drained when the water temperature is very high, so as to prevent the body from being damaged due to too large temperature difference. After the water temperature drops to 40°C, the water should be released. The water tank lid should be opened to turn the crankshaft so that the water in the water pump can be completely exhausted. In order to avoid cracking radiators, cylinder heads, cylinders and other parts.
(4) Maintain the normal temperature of the diesel engine. After starting the diesel engine, the diesel engine can only start working when it is warmed up to 60°C (the tractor can only start empty running when the water temperature is at least 40°C). The water temperature should be kept in the range of 80-90°C after normal operation, and the maximum temperature should not exceed 98°C.
(5) Check the belt tension. With a force of 29.4 to 49N in the middle of the belt, the amount of belt indentation of 10 to 12mm is appropriate. If it is too tight or too loose, loosen the generator bracket fastening bolts and adjust the position by moving the generator pulley.
(6) Check the leakage of the water pump and observe the leakage of the drain hole under the water pump cover. The leakage of water within 3 minutes should not exceed 6 drops. If it is too high, the water seal should be replaced.
(7) Pump shaft bearings should be lubricated regularly. When the diesel engine is working for 50 hours, butter should be added to the pump shaft bearing.
(8) The scale of the cooling system should be cleaned when the engine is operated for about 1000 hours.
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