Disassembly and Assembly of Office Chair Springs

The disassembly and assembly of office chair springs must be carried out strictly according to the steps to avoid damaging components or causing safety hazards. The specific methods are as follows:

I. Disassembly Steps

1. Basic Preparation and Seat Separation
   Place the office chair flat on the ground with the side facing up for easy operation. Use a wrench to loosen the nut at the connection between the seat and the lifting gas cylinder, and remove the entire seat from the lifting gas cylinder. Then insert the lifting gas cylinder into the base on the ground to keep it stable.

2. Separate the Pneumatic Rod from the Lifting Gas Cylinder
   Use a wrench to loosen the nut at the part where the pneumatic rod is connected to the lifting gas cylinder, and remove the pneumatic rod from the lifting gas cylinder. Pay attention to the tightness of the nut in this step to avoid over-tightening and damaging the threads.

3. Disassemble the Backrest Bracket and Support Column
   Remove the backrest bracket connected to the pneumatic rod with a wrench, and then deal with the support column and the gas spring. Key Operation: First release the preload of the gas spring (such as by pressing the release valve or rotating slowly), and then remove the fixing nut of the support column to prevent the spring from suddenly rebounding and causing injury.

4. Separate the Gas Spring from the Pneumatic Rod
   Fix the support column on the ground, and insert the pneumatic rod into the hole of the support column. Use a wrench to loosen the nut at the part where the lower end of the pneumatic rod is connected to the gas spring, and slowly remove the gas spring. Special Case: If it is the recline adjustment spring of an executive chair, first lay the chair down, use a screwdriver to unscrew the fixing screws, and then manually remove the spring.

II. Assembly Steps

1. Inspect and Clean the Gas Spring
   Before assembly, clean the surface of the gas spring and check for deformation, cracking, or air leakage. If any damage is found, it must be replaced with a new part; otherwise, it may affect the stability of the chair or cause the recline function to fail.

2. Assemble According to the Original Position
   Align the gas spring with the mounting hole at the lower end of the pneumatic rod, ensure the interface is aligned, and then insert it. Use a wrench to gradually tighten the connecting nut, paying attention to uniform force to avoid the nut being too tight and causing thread slippage or too loose and leading to looseness.

3. Restore Other Components
   Install the backrest bracket and the pneumatic rod onto the lifting gas cylinder in sequence, and tighten the nuts at each connection. Finally, re-fix the seat onto the lifting gas cylinder, adjust it to the appropriate height, and test the function to ensure that the spring rebounds smoothly and there is no abnormal noise.

Precautions:

• Wear protective gloves during operation to prevent the spring or metal parts from scratching the skin.
• If the preload of the spring is large, it is recommended that two people collaborate to complete the disassembly and assembly.
• Regularly check the condition of the spring and connecting parts to extend the service life of the office chair.