The air filter pre-filters the air before, and the larger dust particles are collected in the duckbill-shaped duct of the air pre-filter. During maintenance, you can pinch the duckbill-shaped tube opening by hand to remove the dust in the tube. discharge. However, how to do routine maintenance to ensure the long-term use of the air filter? The following is Hebei Huilong Hydraulic Machinery Co., Ltd. The editor of the article summarizes the following points when maintaining the air pre-filter:

(1) Master the characteristics and cleaning methods of paper filter elements;

This filter element uses microporous filter paper with a surface treatment. When the engine is working, the air filters out dust through the micropores, ensuring 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 infiltrating the filter element.

There are two common cleaning methods:

① Take out the filter element from the shell, gently tap the end surface of the paper filter element to make the dust fall off. Do not hit the outer surface of the filter element to prevent damage to the filter element.

②Blow out the dust from the inside of the filter element with compressed air. To prevent damage to the filter paper, the compressed air pressure should not exceed 0.2~0.3MPa.

(2) Install correctly;

Prevent air from entering the cylinder without filtering. When inspecting and maintaining the air filter, check whether the filter paper is damaged. If the filter paper is damaged, replace it with a new one.

(3) Clean and replace the filter element regularly;

In use, the air filter element should be cleaned frequently in accordance with the car maintenance regulations, so as not to increase the air intake resistance due to excessive dust on the filter element, reduce engine power, and increase fuel consumption. If the filter element is damaged, replace it in time.

(4) When replacing a new filter element, you should use the filter element supplied by the original factory. Do not use inferior quality filter elements. Generally, you can identify high-quality and inferior filter elements from the packaging and appearance, and you can also inspect them after installation. If the CO exceeds the standard, the CO discharged when the filter element is not installed meets the standard, which means that the filter element has poor air permeability and is an unqualified filter element.