Some drivers, after buying a new car, are put into transportation without running in, which can easily cause early wear and shorten the service life of various components on the car. For a new car or overhauled vehicle, the engine must be idling for more than 10 minutes before starting to drive for a certain distance. Careful attention should be paid to running and running: 1. The oil with smaller viscosity and better fluidity should be used to form a complete and good oil film on the friction surfaces of all the engine's movements, and the frictional metal chips should be brought to the oil pan more smoothly. If the oil pressure is found to be abnormal, it is necessary to promptly identify the cause and eliminate the malfunction. When the mileage reaches 500 kilometers, you need to change the oil once. After the mileage of the running gear is completed, besides replacing the oil again, the oil of the chassis (including the gearbox and the rear axle) must be replaced. Every time you change oil, you must clean the oil circuit with clean diesel. 2. The run-in distance is generally required to be between 1000 and 1500 kilometers. If not specified in the instructions, it should not be less than 1,000 kilometers. In order to reduce the pressure per unit area of ​​the new vehicle or overhauled vehicle, and perfectly meet the running requirements for the best cooperation of the friction surfaces, it is advisable to engage the idle running and then carry out the running with load. The mileage of an empty run is usually 1/10 of the total mileage. When driving with a load, it is loaded at 25% of the approved load. Pay attention to the choice of driving on flat roads with good road conditions. The speed should not be too fast, and medium speed is better, so as not to overload the surface of the parts and damage the lubricant film. 3. The empty running must be performed from the low gear to the high gear. In each grade, the driver should steer left and right, carefully test and check whether the steering mechanism and brakes are flexible and reliable. Observe carefully. Other operating conditions such as engine, gearbox, traveling part, electrical system, auxiliary device, etc. If abnormal symptoms such as smoke coming out of the exhaust pipe and abnormal noise on the rear axle are found, it is necessary to find out the cause and complete the troubleshooting. After driving for 200 kilometers, check the fastening bolts on the cylinder head, intake and exhaust pipes, and tires once and tighten them according to the specified torque. Only after successful running-in is complete can you run the transport.
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