Winter is the season in which tractors and other motor vehicles are most prone to accidents. The main ones are: freezing (blasting) cracked bodies and cylinder heads. To reduce the risk of freezing (explosion) cracking, attention should be paid to the following ten aspects:
1. After the car is collected every day in winter, the cooling water in the engine body should be netted. If the locomotive has a high temperature after heavy-duty operation, the water temperature should be lowered to 60°C before opening the drain valve to prevent the machine parts from being hot and cold and cracking.
2. When the winter diesel engine is not easy to start, do not use water-free start-up or other methods that start after adding cooling water. Because the local temperature of the cylinder head can reach 800°C or more after the locomotive is started, if the cold water is immediately encountered, cracks may be generated due to excessive temperature difference. For this purpose, the water tank should be heated to allow the body to warm up and the engine can be easily started.
3. After the locomotive has been used for a long time, a thick layer of scale will be formed on the inner wall of the cooling waterway of the cylinder head, thereby greatly reducing the cooling efficiency of the engine cooling system and causing the cylinder head to crack due to uneven local heat dissipation. For this reason, the scale of the cooling system must be regularly removed.
4, water tank leaking, water pipe joints are not tightened, water pump seals or cylinder sleeve water stop failure, will lead to engine water shortage operation, cylinder head due to excessive temperature rise and burst. The water level should be checked at any time and replenished in time.
5, Locomotive overload operation for a long time, poor cooling system cooling, fuel supply time is too late, will cause the engine to overheat, and lead to cracks in the cylinder head. Therefore, it is strictly forbidden to overload the locomotive for a long time.
6, when the engine tank open pot, suddenly add cold water, the cylinder head will crack due to hot quenching. The correct method is: stop the engine first, let the engine run for a while, and then add cold water after the standby temperature drops.
7. After a long period of use, the cylinder head will gradually warp and deform, which will cause the cylinder to clog out of the cylinder pad, resulting in high temperature gas in the cylinder and causing a high temperature in the cylinder head to cause cracks. For this reason, the cylinder head plane must be ground in time.
8. Any locomotive operating in winter must bring insulation and insulation curtains.
9. When the engine is working, the temperature should be kept at 70°C; the engine is prohibited to run for a long time; the short-term stop water temperature should not be lower than 40°C.
10. If the fan of an air-cooled engine fails or if the body heat sink is blocked by sludge dirt, the engine temperature will rise rapidly. At this point, you should find out the reason, and continue working after troubleshooting.
Frozen Swimming Crab,Crab Frozen,Frozen Cut Swimming Crab,Blue Swimming Crab
Zhoushan City Shuangying Aquatic Products Co., Ltd.  , https://www.shuangying-aquatic.com