Product Introduction:

The pins referenced by 310905967 and 310504768 are used in XCMG XE215SLL and XE215DLL excavators. They serve as connection and pivot elements in the machine's linkage and hydraulic mounting points.

1. Installation Location
These pins are installed at the connection joints of the excavator's working equipment, including boom, arm, and bucket linkage points, as well as hydraulic cylinder mounting positions. They pass through the mating bores of the connected components and are secured in place.

2. Function
The pins transmit force and provide a pivot point between connected components, allowing controlled rotation at the joint while carrying shear and bearing loads. They are subjected to significant force and friction during digging and lifting operations, so correct fit and material strength are essential for reliable machine operation.

3. Maintenance and Service
Regular inspection includes checking the pins for wear, scoring, or deformation, and verifying that retaining hardware is secure. Worn pins can cause excessive joint play, noise, and accelerated wear of the surrounding bushings and bores. If a pin shows signs of damage or excessive clearance, replacement with an identical unit is recommended.

4. Important Notes
Always verify the part numbers 310905967 and 310504768 match the original component specification for the XE215SLL and XE215DLL models before installation. Apply the specified lubricant to the pin and mating bore during assembly, and confirm the pin is fully seated and properly retained after installation.