1. First, you must stop using the elevator and turn off the power supply.

2. Then you need to find the position of the slider, usually at the bottom of the elevator.

3. Remove the screws on the slider with tools such as wrench and torque wrench.

4. Take out the original slider and clean the dust and oil on the slide rail.

5. Install a new slider to ensure a good fit between the slider and the slide rail.

6. Fix the screw and check whether the slider can move smoothly.

7. Finally, restart the elevator and test it to ensure the successful replacement of the slider.