In the early stage of the engine, the water temperature is very fast; when the water temperature gauge indicates 80, the heating rate slows down, it indicates that the thermostat is working normally. On the contrary, if the water temperature increases rapidly, when the internal pressure reaches a certain degree, the boiling water suddenly overflows, it indicates that the main valve is stuck and suddenly opens. When the water temperature gauge indicates 70 ℃ - 80 ℃, open the radiator cap and radiator drain switch, and feel the water temperature by hand. If both hands are tied, it means that the thermostat works normally; if the water temperature at the radiator water inlet is low, and there is no water outflow or little water flow at the inlet pipe of the radiator upper water chamber, it means that the main valve of the thermostat cannot be opened. If the thermostat is stuck or not closed tightly, it should be removed for cleaning or correction, and should not be used with mercy.
運用溝通法，拆下發動機的空氣濾清器，假定此時混凝土攪拌車主張機排出的不是黑煙，那說明是空氣濾清器有嚴重的阻塞，應消弭阻塞或許變換濾芯，變換新的濾芯效果非常好。因為發動機噴油泵和調速器調整不恰當，使油嘴的噴油量太大，逾越了混凝土攪拌車發動機的每個循環噴油數量，或許是有對比嚴重的後滴油現象等，構成供油量過大。
Using the communication method, remove the air filter of the engine. Assuming that the smoke emitted by the concrete mixer is not black smoke, it means that the air filter is seriously blocked. It is necessary to eliminate the blocking. Maybe it is very good to change the filter element and change the new filter element. Because the fuel injection pump and governor of the engine are not properly adjusted, the fuel injection quantity of the nozzle is too large, which exceeds the fuel injection quantity of each cycle of the concrete mixer engine. Maybe there is a serious phenomenon of post drip, which constitutes the excessive fuel supply.
在裝有渦輪增壓設備的混凝土攪拌車柴油機，應按混凝土攪拌車修補守則上的渦輪增壓設備的缺陷確診辦法間斷確診與清掃，或選用置換法，即換用同類型的渦輪增壓器，若溝通後沒有黑色煙霧就能夠證明混凝土攪拌車柴油機冒黑煙是渦輪增壓器損壞所發作的。柴油是碳氫化合物，假定發動機在短少氧氣的條件下停息，簡單構成停息不充分，不無缺，會導致部分沒有無缺停息的碳元素構成遊離碳，混入廢氣排出，導致發作了黑色的煙霧。
The diesel engine of the concrete mixer equipped with turbocharging equipment should be diagnosed and cleaned intermittently according to the defect diagnosis method of the turbocharging equipment in the repair code of the concrete mixer, or the replacement method should be selected, that is, the same type of turbocharger should be used. If there is no black smoke after communication, it can be proved that the black smoke of the diesel engine of the concrete mixer is caused by the damage of the turbocharger. Diesel is a hydrocarbon. Assuming that the engine stops under the condition of short oxygen, the simple composition of stopping is not sufficient, which will lead to the formation of free carbon by some carbon elements without stopping, which will be mixed into the exhaust gas and lead to black smoke.
翻開散熱器加水口蓋，若散熱器內冷卻水安靜，則標明節溫器工作正常，否則，則表明節溫器工作異常。這是因為，在水溫低於70℃時，節溫器脹大筒處於縮短情況，主閥門關閉;當水溫高於80℃時，脹大筒脹大，主閥門逐步翻開，散熱器內循環水初步活動。
Open the radiator water inlet cap. If the cooling water in the radiator is quiet, it indicates that the thermostat works normally. Otherwise, it indicates that the thermostat works abnormally. This is because, when the water temperature is lower than 70 ℃, the expansion cylinder of the thermostat is in the shortening condition, and the main valve is closed; when the water temperature is higher than 80 ℃, the expansion cylinder is expanded, and the main valve is gradually opened, and the circulating water in the radiator is initially active.
當水溫表指示70℃以下時，散熱器進水管處若有水活動，水溫溫熱，則表時節溫器主閥門關閉不嚴，使冷卻水過早大循環。假定是纖細的髒汙，可不必攪拌車車身清洗劑，直接用毛巾擦，當即就能夠擦潔淨。但假定玻璃上附著的是油膜，用通常的辦法很難肅清，這時，需求動用肅清油膜專用的玻璃清洗劑來擦洗，它的效果是能夠使油膜不易附在玻璃上。運用玻璃專用清洗產品前，應先清洗車窗，否則清洗效果會打扣頭。玻璃清洗劑在幹了以後，就像打蠟相同會變白，隻需用柔軟的布將它拭去即可。
When the water temperature gauge indicates below 70 ℃, if there is water movement at the radiator inlet pipe and the water temperature is warm, the main valve of the thermometer is not closed tightly, which makes the cooling water circulate prematurely. Assuming that it is a fine dirt, you don't need to mix the car body cleaning agent, just use a towel to clean it immediately. But suppose that the oil film is attached to the glass, and it is difficult to clean it with the usual method. At this time, it is necessary to use the special glass cleaning agent to clean the oil film. Its effect is that the oil film is not easy to adhere to the glass. Before using the special cleaning products for glass, the windows should be cleaned first, otherwise the cleaning effect will be compromised. After the glass cleaner is dry, it will turn white just like waxing. Just wipe it off with a soft cloth.
