1、 The decrease of temperature in winter, the thickening of oil viscosity in summer, the increase of crankshaft circulation resistance and the poor fluidity of oil result in the increased wear of piston and cylinder liner of concrete mixer. Therefore, it is necessary to use the winter engine oil with low grade and good fluidity. It is suggested by the concrete mixer manufacturer to change the engine oil of 10W-30 or 5W-30. The former can be started at - 15 ℃ and the latter can be started at - 25 ℃.

二、检查防冻液

2、 Check antifreeze

加注防冻液前一定要对混凝土搅拌车发动机冷却系统进行一次认真的清洗。应使用10%的烧碱水溶液浸泡水箱一个小时，再将冲洗液排放，然后用软化水反复冲洗23次，以混凝土搅拌车发动机冷却系统中原积存的水垢，冲洗完后才能加注防冻液。

The engine cooling system must be cleaned carefully before filling the concrete mixer. 10% caustic soda solution should be used to soak the water tank for one hour, and then the flushing fluid should be discharged. Then, the softened water should be used to repeatedly wash for 2 to 3 times to remove the original scale accumulated in the engine cooling system of the concrete mixer truck. After washing, the antifreeze solution can be added.

中科聚峰混凝土搅拌车

Zhongke Jufeng concrete mixer

同时，在加注防冻液前要检查混凝土搅拌车发动机冷却系统有无渗漏现象，并应及时排除后才能使用防冻液。防冻液使用中要实行定期检查。防冻液的有效期一般2年，为了减少浪费，防冻液加注后不要随意更换。

At the same time, before adding antifreeze, check whether there is leakage in the engine cooling system of concrete mixer, and remove it in time before using antifreeze. Regular inspection should be carried out in the use of antifreeze. The validity period of antifreeze is generally 2 years. In order to reduce waste, do not replace the antifreeze after filling.

但是，应对使用中的防冻液实行定期定项检查，如发现比重增大、防冻液变稠、冰点上升，以及防冻液变浊、变质、变味、发泡等应及时更换。要选择低于车使用地区温度10度左右并具备冬季防冻、夏季防沸、防腐、防水垢的长效型的防冻液。

However, the antifreeze in use should be inspected regularly. If it is found that the specific gravity increases, the antifreeze becomes thicker, the freezing point rises, and the antifreeze becomes turbid, deteriorated, tasted and foamed, it should be replaced in time. Choose a long-term antifreeze that is about 10 degrees lower than the minimum temperature in the area where the car is used, and has anti freezing in winter, anti boiling in summer, anti-corrosion and anti scaling.

三、要检查电瓶

3、 Check the battery

混凝土搅拌车蓄电池怕低温，在冬季来临之前，须补充蓄电池的电解液，并检查存电情况，温暖天气时使用正常的蓄电池，在寒冷的气温下经常失效，故蓄电池的保养应引起司机朋友的特别重视。要看是否需添加蒸馏水，同时察看清洁电瓶的极柱，并检测电瓶液的比重。对启动无力、使用时间超过两年的电瓶换掉。

The battery of concrete mixer truck is most afraid of low temperature. Before winter comes, it is necessary to supplement the electrolyte of the battery and check the storage condition. When using normal battery in warm weather, it often fails in cold temperature. Therefore, the maintenance of battery should cause special attention of driver's friends. To see if you need to add distilled water, while looking at the clean battery pole, and detect the specific gravity of the battery liquid. It's better to replace the batteries that are unable to start and have been used for more than two years.

四、混凝土搅拌车检查刹车和轮胎

4、 Check brake and tire of concrete mixer

冬季雨雪天较多地面比较湿滑，所以要检查刹车和轮胎。要查看一下刹车油壶液面的高低，检验刹车会不会跑偏，混凝土搅拌车制动效果是否良好。对于轮胎的检查一是要看胎压是不是符合标准，二是要看混凝土搅拌车轮胎的磨损情况，如果轮胎花纹已磨光，轮胎有裂痕或破损的情况，应急时更换。

There are many rainy and snowy days in winter, and the ground is wet and slippery, so check the brakes and tires. Check the liquid level of the brake oil pot, check whether the brake will deviate, and check whether the brake effect of the concrete mixer is good. For the inspection of tires, one is to see whether the tire pressure meets the standard, the other is to see the wear condition of the concrete mixer tire. If the tire pattern has been polished, the tire has cracks or damage, it should be replaced in case of emergency.

五、此外，有可能的话，在清洁玻璃的喷水壶里加入酒精来降低冰点，保证水壶里的水不会结冰，随时可以清洁挡风玻璃，保持良好的视线。另外，冬天橡胶会发硬收缩，所以混凝土搅拌车风扇皮带、空调皮带张力不要太紧，否则对混凝土搅拌车发电机的轴承有损伤，还会拉断皮带。

5、 In addition, if possible, add alcohol to the water spray kettle to reduce the freezing point, so as to ensure that the water in the kettle will not freeze. You can clean the windshield at any time and keep a good view. In addition, the rubber will harden and shrink in winter, so the tension of the fan belt and air conditioning belt of the concrete mixer should not be too tight, otherwise the bearing of the generator of the concrete mixer will be damaged, and the belt will be broken.