How to maintain auto parts (above)

2023-09-02

1, afraid of "dirty"

If the fuel filter, oil filter, air filter, hydraulic oil filter and various filters and other parts are too dirty, the filtering effect will be deteriorated. Excessive impurities will enter the oil cylinder and aggravate the mechanism. The wear of the parts increases the possibility of failure. If it is severely blocked, it will also cause the vehicle to fail to work normally. Water tank heat sink, air-cooled engine block and cylinder head heat sink, cooler heat sink and other parts are too dirty, which will cause poor heat dissipation and excessive temperature. Therefore, for this kind of "afraid of dirty" parts must be cleaned and maintained in time.

Fear of "heat"

If the temperature of the engine piston is too high, it is easy to cause overheating and melting and cylinder holding: rubber seals, triangular tapes, tires, etc. are overheated, prone to premature aging, performance degradation, and shortened service life, starters, generators, regulators and other electrical equipment The coil is overheated and easily burned and scrapped; vehicle bearings should be maintained at an appropriate temperature. If overheated, the lubricating oil will quickly deteriorate, which will eventually lead to bearing burning and vehicle damage.

3, afraid of "string"

The various coupling parts in the diesel engine fuel system, the driving and driven gears in the drive axle main reducer, the hydraulic control valve block and the valve stem, the valve core and the valve sleeve in the full hydraulic steering gear, etc., these coupling parts are manufactured After special processing, it is ground in pairs, and the coordination is very precise. It is always used in pairs during the life of use and must not be interchangeable. Some mutually cooperating parts, such as pistons and cylinder liners, bearing bushes and journals, valves and valve seats, connecting rod big-end covers and shafts, etc., have relatively good cooperation after a period of running-in. During maintenance, you should also Pay attention to the assembly in pairs, do not "visit" each other ".

Fear of ""

The engine cylinder head gasket cannot be installed reversally during installation, otherwise it will cause premature ablation and damage to the cylinder head gasket: some special-shaped piston rings cannot be installed reversally, and should be assembled according to the requirements of different models: engine fan blades are also installed Directional requirements, fans are generally divided into two types: exhaust and suction, which cannot be reversed, otherwise it will cause poor engine heat dissipation and high temperature to tires with directional patterns, such as herringbone pattern, after the installation of the ground print should make the herringbone tip pointing to the rear, in order to ensure a large driving force. For the two tires installed in parallel, different models also have different requirements and cannot be installed at will.

5, afraid of "lack"

When repairing vehicles, some small pieces may be missed due to negligence, and even some people think that it doesn't matter whether they are installed or not, which is very dangerous and harmful. Engine valve lock plates should be installed in pairs. If missing or missing, the valve will lose control and damage the piston and other parts: engine connecting rod bolts, flywheel bolts, drive shaft bolts installed on the cotter pins, locking screws, safety plates or Anti-loosening devices such as spring washers, once missing, may cause serious failures in use: Once the oil nozzles used to lubricate gears in the engine timing gear chamber are missing, it will cause serious oil leakage there, make the engine oil pressure too low: the loss of the water tank cap, oil port cap, and fuel tank cap will cause the intrusion of sand, gravel, dust, etc., and aggravate the wear of various parts.

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