Often check whether the transmission oil level of commercial concrete cement mixer truck is normal. The way to check the automatic transmission oil of commercial concrete cement mixing truck is different from that of engine oil. The engine oil is checked when the vehicle is cold. However, the transmission oil of commercial concrete cement mixing truck needs to preheat the oil to about 50 ℃, and then put the gear lever in the parking gear after staying in each gear for 2 seconds. At this moment, the normal oil level of the dipstick should be located between the high and low lines, If not, oil products of the same quality shall be added in time.

把握好替换商品混凝土水泥搅拌运输车变速箱油的周期。在正常运用的过程中，商品混凝土水泥搅拌运输车变速箱油的工作温度通常在120摄氏度左右，因而对油品的质量需求很高，还有必要保持清洁。商品混凝土水泥搅拌运输车变速箱油运用时间长了以后会发生油垢，有可能会构成油泥，会加大各摩擦片和各部件的磨损，并且还影响体系油压，使动力传递受到影响。脏油中的油泥会使各阀体中阀体的移动不畅，油压操控受影响，从而使商品混凝土水泥搅拌运输车自动变速箱出现异常。

Grasp the cycle of replacing the gearbox oil of commercial concrete cement mixer truck. During normal operation, the operating temperature of gearbox oil of commercial concrete cement mixer truck is usually about 120 ℃, so there is a high demand for oil quality, and it is necessary to keep it clean. The gearbox oil of commercial concrete cement mixer truck will produce oil dirt after a long service time, which may form oil sludge, increase the wear of friction plates and components, and also affect the system oil pressure and power transmission. The oil sludge in the dirty oil will hinder the movement of the valve body in each valve body and affect the oil pressure control, so as to make the automatic transmission of commercial concrete cement mixer truck abnormal.

正确地替换变速箱油。当前较好的换油办法是动态换油，选用专用的变速箱清洁设备，在变速箱工作的过程中，将旧油充沛循环，排放洁净后再参加新的变速箱油，从而使换油率高达90以上。商品混凝土水泥搅拌运输车司机应培育自动查看、保护、养护的认识，能够学习一些保护、养护商品混凝土水泥搅拌运输车的基本知识，仔细阅览随车运用说明，记住一些必要数据等。科学养车，才干确保商品混凝土水泥搅拌运输车处于杰出的技能状况，确保行车。

Replace the transmission oil correctly. At present, the better oil change method is dynamic oil change. Special transmission cleaning equipment is selected. During the operation of the transmission, the old oil is fully circulated, and the new transmission oil is added after being discharged and cleaned, so that the oil change rate is more than 90. The driver of commercial concrete cement mixer truck shall cultivate the understanding of automatic viewing, protection and maintenance, be able to learn some basic knowledge of protection and maintenance of commercial concrete cement mixer truck, carefully read the onboard operation instructions, remember some necessary data, etc. Only by maintaining the vehicle scientifically can we ensure that the commercial concrete cement mixer truck is in an excellent technical condition and ensure driving safety.