1, afraid of "dirty"
If the fuel filter, oil filter, air filter, hydraulic oil filter and various types of filters are too dirty, the filtration effect will be worse, and too much impurities will enter the oil cylinders, which will intensify. The wear of the parts increases the possibility of failure; if it is severely blocked, it will also cause the vehicle to not work properly. Parts such as the water tank heat sink, the air-cooled engine block and the cylinder head heat sink, and the cooler heat sink are dirty, which may result in poor heat dissipation and high temperature. Therefore, such "tough" parts must be cleaned and maintained in a timely manner.
2, afraid of "hot"
If the engine piston temperature is too high, it will easily lead to overheating and melting, and the cylinder will be overheated; rubber seals, triangle tapes, tires, etc. will overheat, easy to premature aging, performance degradation, shortened service life; starter, generator, regulator and other electrical equipment The coil is overheated, extremely easy to burn and scrapped; the vehicle bearing should maintain proper temperature, such as overheating, the lubricant will quickly deteriorate, eventually causing the bearing to burn and the vehicle to be damaged.
3, afraid of "string"
Various coupling parts in the diesel fuel system, the main driven gear in the transaxle final drive, the hydraulic control valve block and the valve stem, the valve core and the valve sleeve in the full hydraulic steering gear, etc. After special processing, it is ground in pairs, and it is very precise. It is always used in pairs during the life of the product. It is not interchangeable. Some mutual matching parts, such as piston and cylinder sleeve, bearing bush and journal, valve and valve seat, connecting rod head cover and shaft, etc., after a period of grinding cooperation, relatively good cooperation, should also pay attention to maintenance In pairs, don't "slam" each other.
4, afraid of "reverse"
The cylinder head gasket of the engine can not be reversed during installation. Otherwise, the cylinder head gasket will be prematurely ablated and damaged. Some special shape piston rings should not be reversed. It should be assembled according to the requirements of different models; the engine fan blades also have direction when installed. It is required that the fan is generally divided into two types: exhaust and suction, which cannot be reversed. Otherwise, the engine will be poorly cooled and the temperature will be too high. For tires with directional patterns, such as herringbone tires, the ground marks after installation should make people The tip of the word points to the back to ensure maximum driving force. For the two tires that are installed together, different models have different requirements and cannot be installed at will.