In winter, the temperature is low, and diesel engine cylinder heads are prone to crack leakage. The main reasons are the following: 1. Add cooling water after starting. After the diesel engine is started, the temperature inside the engine immediately rises. If cooling water is added at this time, the cylinder block and the cylinder head will cool rapidly and cracks will occur due to shrinkage. 2. After shutdown, no cooling water was put. The water in the machine freezes into ice and the volume increases, causing the cylinder block and the cylinder head to burst. 3, long-term operation of the diesel engine, the high temperature inside, put the high temperature water immediately after parking. Can cause hot parts to encounter cold air and crack. 4, when the diesel engine is running, the cooling water is insufficient or the temperature of the water tank casserole is too high, suddenly adding cooling water. Cooling and shrinkage of the cylinder block and cylinder head can also cause cracking. 5. Use the decompressor to stop the machine, so that the high temperature cylinder head suddenly encounters cold air and causes cracking. The following methods are used to prevent cracking of various cylinder blocks and cylinder heads: 1. Before starting the diesel engine, warm water should be added to the water tank. In the winter season, hot water should be poured 2~3 times. It is better to start the water flowing out of the water discharge valve at about 30~50°C. 2. When the diesel engine runs for a long time, it should wait for about half an hour after the engine is stopped. When the engine temperature drops to 40~50°C, the cooling water should be released. After the water is released, it is best to use a thin wire to open the water valve to prevent the sediment from blocking the drain valve. 3, when the diesel engine runs overheated and there is a serious shortage of water, the diesel engine should be idled at a low speed for 10 to 15 minutes, and then slowly add cooling water. Pangfanyi Sweet Potato is a Natural and nutritious food crop ,Delicious household staple which can be many kinds of made-in-house foods. Its stripes contain protein, starch, pectin, cellulose, amino acids, vitamins and some minerals, and are called the "longevity food". for anti-cancer, heart protection, weight reduce, prevention of pulmonary emphysema, diabetes and so on. Potato Natural,Nutritional,Crispy China Chongqing Pangfanyi Technology Co.,Ltd. , https://www.pangfany.com