The above describes the relevant contents of auto parts. Let's take a look at how to maintain auto parts.

1. Afraid of "dirty"

If the parts such as fuel filter, oil filter, air filter, hydraulic oil filter and various strainers are too dirty, the filtering effect will be poor, and too many impurities will enter the oil circuit cylinder, which will aggravate the wear of machine parts and increase the possibility of failure; In case of serious blockage, the vehicle will not work normally. Dirty radiator of water tank, radiator of air-cooled engine cylinder block and cylinder head, radiator of cooler and other parts will lead to poor heat dissipation and high temperature. Therefore, such "dirty" parts must be cleaned and maintained in time.

2. Afraid of "string"

Various matching parts in the diesel fuel system, the driving and driven gears in the main reducer of the drive axle, the hydraulic control valve block and valve rod, the valve core and valve sleeve in the full hydraulic steering gear, etc. These matching parts are specially processed and ground in pairs during manufacturing. The matching is very precise. They are always used in pairs within the service life and must not be interchanged. Some mating parts, such as piston and cylinder liner, bearing bush and journal, valve and valve seat, connecting rod big end pad cover and rod body, are relatively well matched after running in for a period of time. During maintenance, attention should also be paid to assembling in pairs and not "visiting" each other.

3. Fear "lack"

During vehicle maintenance, some small parts may be omitted due to negligence, and some people even think it doesn't matter whether they are installed or not, which is very dangerous and harmful. Engine valve keys shall be installed in pairs. If missing or missing, the valve will lose control and damage the piston and other parts; The cotter pin, locking screw, safety plate or spring pad installed on the connecting rod bolt, flywheel bolt and transmission shaft bolt of the engine may cause serious failure in use once they are omitted; Once the oil nozzle used to lubricate the gear in the engine timing gear chamber is missing, it will lead to serious oil leakage and low engine oil pressure; If the water tank cover, oil port cover and oil tank cover are lost, sand, dust, etc. will invade and aggravate the wear of all parts.

4. Afraid of "washing"

Some people who are new to driving or learning to repair may think that all parts need cleaning. In fact, this understanding is one-sided. For the paper air filter element of the engine, when removing the dust on it, it cannot be cleaned with any oil, just tap it gently with your hand or blow the high-pressure air from the filter element to the outside; Leather parts should not be cleaned with oil, but only with a clean rag.

5. Afraid of "near fire"

Rubber products such as tires, V-belts, cylinder liners, and rubber oil seals, if close to the fire source, will be easy to age, deteriorate, or damage. On the other hand, they may also cause fire accidents. Especially for some diesel vehicles, it is difficult to start in the severe cold in winter. Some drivers often use blowtorch heating to prevent burning the lines and oil circuits.

6. Fear of "heat"

The engine piston temperature is too high, which is easy to cause overheating and melting and cylinder lock; Rubber seals, V-belts, tires, etc. are overheated, which is easy to age prematurely, reduce performance and shorten service life; The coil of starter, generator, regulator and other electrical equipment is overheated, which is easy to be burned and scrapped; The vehicle bearing shall be kept at an appropriate temperature. If it is overheated, the lubricating oil will deteriorate quickly, and eventually the bearing will be burned and the vehicle will be damaged.

7. Fear "anti"

The engine cylinder gasket shall not be installed reversely during installation, otherwise it will cause premature ablation and damage of the cylinder gasket; Some piston rings with special shapes shall not be installed reversely, and shall be assembled according to the requirements of different models; There are also direction requirements for the installation of engine fan blades. The fan is generally divided into two types: exhaust and suction. Do not reverse them, otherwise it will cause poor heat dissipation and high temperature of the engine; For tyres with directional pattern, such as herringbone pattern tyres, the ground mark after installation shall make the herringbone point to the rear to ensure maximum driving force. For the two tires installed together, different models have different requirements, and they cannot be installed at will.

8. Afraid of "oil"

The paper filter element of the engine dry-type air filter has strong hygroscopicity. If it is stained with oil, it is easy for the mixture with high concentration to be sucked into the cylinder, resulting in insufficient air, increased fuel consumption and reduced engine power. The diesel engine may also cause "runaway"; If the triangular tape is stained with oil, it will accelerate its corrosion and aging, and slip easily, resulting in the reduction of transmission efficiency; If the brake shoe, friction plate and brake belt of dry clutch are stained with oil, it is easy to slip and work poorly, thus threatening driving safety; Greasy dirt on the starting motor and generator carbon brush will lead to insufficient power of the starting motor and low voltage of the generator due to poor contact. Tire rubber is very sensitive to oil corrosion. Contact with oil will soften or peel the rubber, and short-term contact will lead to abnormal damage or even serious damage to the tire.

9. Fear "pressure"

If the tire casing is stored under long-term pressure and not turned over in time, it will be deformed due to extrusion, affecting the service life; If the paper filter element of air filter and fuel filter is squeezed, it will produce large deformation and can not reliably play the role of filtration; Rubber oil seal, triangular tape, oil pipe, etc. shall not be extruded, otherwise it will also deform and affect normal use.

10. Afraid of "Repetition"

Some parts should have been used once, but some drivers or repairmen reuse them in order to save money or do not understand the "Taboos", which is very likely to lead to accidents. Generally speaking, the engine connecting rod bolts, nuts, fixing bolts of imported diesel fuel injectors, cylinder liner water blocking rings, sealing copper gaskets, various oil seals and sealing rings of the hydraulic system, as well as pins and split pins at important parts must be replaced with new ones after disassembly; As for the engine cylinder gasket, although no damage is found during maintenance, it is better to replace it with a new one, because the old one has poor elasticity, poor sealing, and is easy to be damaged by ablation. It needs to be replaced after a short time of use, which is time-consuming and laborious. Therefore, it is better to replace it with a new one if possible.

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