Installation method of P627763 truck diesel engine air filter

Preparation and tool adaptation before installation
Before installing the P627763 air filter, it is necessary to confirm that the filter element model matches the truck engine parameters perfectly. This filter element is designed specifically for diesel engines from brands such as XCMG, Caterpillar, and Lingong. It features a foldable fiberglass filter layer and stainless steel frame structure, and is resistant to high temperatures (100 ℃) and high pressures (15MPa). It is suitable for both imported and domestic heavy-duty trucks. When preparing tools, it is necessary to prepare screwdrivers, wrenches, and cleaning cloths to ensure that the operating environment is free of dust. For example, the P627763 filter cartridge produced by Hebei Yuding is clearly labeled as suitable for the Caterpillar 336D2 excavator. Before installation, it is necessary to check whether the engine model and filter cartridge specifications are consistent to avoid sealing failure due to size deviation.

Disassembly of filter element and disposal of old parts
When disassembling the old filter element, it is necessary to first turn off the engine and cool it down to room temperature to prevent scalding of high-temperature components. After opening the engine compartment cover, locate the air filter box - usually a black plastic housing located on the right side of the engine compartment or near the turbocharger. According to the fixed method of operation: the buckle type box body needs to be lightly bent, while the screw type should be smoothly unscrewed with a screwdriver to avoid damaging the threads. When removing the old filter element, tilt the box to prevent dust from falling into the air inlet. For example, in a certain maintenance case, the operator failed to clean the residual sand particles inside the filter cartridge box, resulting in the sealing ring of the new filter cartridge being scratched by impurities after installation, causing abnormal engine intake.
Installation and orientation verification of new filter element
When installing the P627763 new filter element, it is necessary to strictly follow the anti reverse design. The side of the filter element is usually printed with an airflow direction arrow, which should point in the same direction as the engine intake. Place the filter element vertically into the box, ensuring that the edge of the filter layer is completely in contact with the inner wall of the box to avoid gaps that may cause air leakage. For example, the filter cartridge produced by Bazhou Shuoye adopts radial sealing technology, and the top of the filter cartridge needs to be lightly pressed during installation to ensure a tight fit with the outlet pipe. If the installation direction of the filter element is incorrect, it will lead to a decrease in filtration efficiency. A certain fleet once caused a 30% increase in engine cylinder wear rate due to the incorrect installation of the reverse filter element.

Sealing inspection and operational testing
After installation, double check the sealing. Firstly, confirm that the box cover buckle or screw is completely fixed and not loose; Next, start the engine at low idle and observe if the air filter blockage indicator light is abnormal. If the indicator light is on, immediately stop the machine and check if the sealing ring is displaced or if there are cracks in the box. For example, after replacing the P627763 filter element on a mining truck, unfiltered air entered the engine due to the failure to tighten the box cover screws, causing a turbocharger malfunction. It is recommended to check the pressure difference of the filter element every 500 hours, and replace it promptly when the pressure difference exceeds 15MPa to ensure that the engine intake cleanliness meets the National VI standard.