Jun. 28, 2020
The cleaning and maintenance refer to the air filter, gasoline filter, and oil filter installed on the engine. Timely cleaning and maintenance can fully engine performance, reduce the engine failure rate, and help extend the service life of the engine.
1. Keep the air filter clean
A dirty air filter will prevent fresh air from entering the cylinder, which will affect the mixing ratio of air and gasoline. According to the Mercedes-Benz truck maintenance test, it takes about 15g of air to completely burn 1g of gasoline. If the air entering the cylinder is insufficient, the mixed gas cannot be completely burned, wasting gasoline, the engine power is insufficient, and the exhaust gas contains more HC and CO components, polluting the environment.
The air inevitably contains impurities such as dust, and its content varies depending on the local soil, climate, and road conditions. According to the test, when the car is driving on a dusty dirt road, the air filter can filter out 0.4-1.8g of dust for every cubic meter of air sucked in. Most of these dust is silica in terms of their chemical composition. Mercedes-Benz truck repairs will puncture the lubricant film when they enter the friction surface, aggravating the wear of the engine cylinder and shortening the service life of the engine.
Modern cars mostly use paper air filters, and the paper filter element has high filtering efficiency, and the dust transmission rate is only 0.1% to 0.3%. The use of paper air filters can reduce the wear of cylinders and pistons and extend the service life of the engine. The following points should be noted when cleaning and using:
(1) Master the characteristics and cleaning methods of a paper filter
This filter element uses microporous filter paper and the surface is treated. When the engine is working, the air filters the dust through the micro-holes to ensure that clean air enters the cylinder. In use, there will be a layer of dust around the filter element. Do not use water or oil during cleaning to prevent oil and water from infecting the filter element. There are two commonly used cleaning methods: ① light tap method, that is, remove the filter element from the shell, gently tap the end surface of the paper filter element to make the dust fall off, and do not knock the outer surface of the filter element to prevent damage to the filter element. ②Purge method, that is, use compressed air to blow out from the inside of the filter element to blow off the dust. To prevent damage to the filter paper, the compressed air pressure cannot exceed 0.2 to 0.3 MPa.
(2) Clean and replace the filter element regularly
In use, the air cleaner filter element should be cleaned frequently in accordance with the car maintenance regulations, so as not to increase the intake resistance due to excessive dust adhering to the filter element, reduce the engine power, and increase the fuel consumption. China Nissan distributor manufacturer reminds you: if the filter element is damaged, it should be replaced in time.
(3) Correct installation to prevent air from entering the cylinder without filtering
When checking and maintaining the air filter, the seal on the filter element must be installed properly. If the gasket has been aged and deformed or broken, it should be replaced with a new one.
(4) When replacing a new filter element, the filter element supplied by the original manufacturer should be used instead of the inferior filter element
Generally, high-quality and inferior filter elements can be identified from the packaging and appearance, and can also be inspected after installation. For example, after installing a new filter element, the CO emitted by the car exceeds the standard, and the CO emitted when the filter element is not installed meets the standard, indicating that the filter element has poor air permeability and is unqualified. Filter element. When buying a filter element, a high-quality AUDI Starter supplier reminds everyone to go to a regular auto parts store, otherwise, it is easy to buy fakes.
2. Keep the gasoline filter clean
Modern car gasoline filters mostly use paper filter elements, and the outer shell is closed with hard plastic, which is a consumable item.
After the filter is blocked, the resistance of the filter element increases and the gasoline flow is not smooth, causing the fuel level in the filter to rise. From the filter housing, you can observe the rise of the internal oil level, so you can determine whether the filter is clogged.
After the filter element is blocked, the fuel supply is insufficient, the engine power is reduced, the vehicle is unable to drive, and the vehicle speed is reduced. A car with a speed of more than 100km/h can be reduced to a speed of 70-80km/h or even lower, and the engine has poor acceleration. Cars such as Audi, Santana, and Jetta require gasoline filters to be replaced every 15000km.
When installing the gasoline filter, the oil inlet and the oil outlet must be distinguished. Generally, the oil outlet is at the upper part of the filter, and the oil inlet is at the lower part of the filter.
3. Keep the oil filter clean
Engine lubricating oil is constantly polluted by metal shavings, dust in the air, and carbon deposits during use. In the maintenance of Mercedes-Benz trucks, heavy impurities are deposited on the bottom of the oil pan, and light oil enters the friction surfaces with the lubricant, causing early wear of the machine parts. The role of the oil filter is to make the lubricating oil filter the dirt through the filter. After the filter is used for a certain period of time, a lot of dirt will adhere to the filter element, so the filter should be replaced regularly. Generally speaking, the oil filter and the oil should be replaced at the same time. In this way, it is helpful to extend the service life of the engine.
For frequently used cars, the oil filter should be replaced every 7500km. Under harsh conditions, such as frequent driving on dusty roads, it should be replaced every 5000km. The precautions for replacing the oil filter are as follows:
(1) Use an oil filter wrench or an appropriate tool to remove the filter to prevent damage to the threaded joints.
(2) Check and clean the installation surface of the oil filter, otherwise, oil leakage will easily occur after installation, resulting in insufficient oil supply.
(3) When installing the oil filter, apply a layer of oil to the surface of the seal ring to ensure reliable sealing and prevent damage to the seal ring.
(4) After starting the engine, check the lubricating oil surface height. If the amount of oil is insufficient, replenish the engine oil as required.