About the maintenance of auto parts


1. Afraid of "lack" When repairing a vehicle, some smal […]

1. Afraid of "lack"
When repairing a vehicle, some small parts may be missed due to negligence. Some people think that it does not matter whether it is installed or not. This is very dangerous and harmful. Engine valve lock plates should be installed in pairs. If missing or missing, it will cause the valve to lose control and damage the pistons; cotter pins installed on the engine connecting rod bolts, flywheel bolts, drive shaft bolts, locking screws, safety plates or If the spring washer and other anti-loosening devices are missing, they may cause serious failures during use; if the oil nozzle used to lubricate the gears in the engine timing gear chamber is missing, it will cause serious oil leakage in that place and cause the engine The oil pressure is too low; the loss of the water tank cover, oil port cover, and fuel tank cover will cause sand, gravel, dust, etc. to invade, and aggravate the wear of various parts.



2. Afraid of "oil"
The paper filter element of the engine dry air filter has strong moisture absorption. If it is stained with oil, it is easy to draw a higher concentration of mixed gas into the cylinder, resulting in insufficient air volume, increased fuel consumption, and reduced engine power. Diesel engines may also Cause "speeding"; if the triangle tape is stained with oil, it will accelerate its corrosion and aging, and at the same time it will easily slip, resulting in a reduction in transmission efficiency; brake shoes, dry clutch friction linings, brake bands, etc., if they are stained with oil It is prone to slippage and poor work, which threatens driving safety; oil stains on the starter motor and generator carbon brush will cause insufficient power of the starter motor and low generator voltage due to poor contact. Tire rubber is very sensitive to oil corrosion. Contact with oil will soften or peel the rubber. Short-term contact will cause abnormal damage or even serious damage to the tire.



3. Afraid of "washing"
Some people who are new to driving or repairing may think that all parts need to be cleaned. In fact, this understanding is one-sided. For the paper air filter element of the engine, when the dust on it is removed, it cannot be cleaned with any oil. You only need to tap it with your hands or blow high-pressure air from the filter element to the outside; for leather parts, it is also not suitable Use oil to clean, just wipe it with a clean cloth.



4. Afraid of "pressure"
If the tire casing is stored for a long time and is not turned over in time, it will deform due to squeezing, which will affect the service life; the paper filter element of the air filter and the fuel filter will be greatly deformed if squeezed It cannot reliably filter; rubber oil seals, triangular tapes, oil pipes, etc. cannot be squeezed, otherwise they will also deform and affect normal use.



5. Afraid of "near fire"
Rubber products such as tires, triangle tape, cylinder liner water blocking ring, rubber oil seal, etc., if they are close to the fire source, will be prone to deterioration or damage. On the other hand, they may cause fire accidents. Especially for some diesel vehicles, it is difficult to start in the severe cold in winter, and some drivers often use blowtorch to heat, so it is necessary to prevent burning of lines and oil lines.



6. Fear of "duplication"
Some parts should be used once, but individual drivers or repairers reuse them for saving or because they don't understand the "taboo", which can easily lead to accidents. Generally speaking, engine connecting rod bolts, nuts, imported diesel fuel injector fixing bolts, cylinder liner water blocking ring, sealing copper gasket, various oil seals and sealing rings of hydraulic system, and important parts of the pin, split pin and other parts are removed It is necessary to replace the new product; for the engine cylinder head gasket, although no damage was found during the inspection, it is best to replace it with a new product, because the old product has poor elasticity, poor sealing, and easy ablation damage. If there are new products, it is better to replace them as much as possible.

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