Office Chair Cylinder Disassembly and Assembly

The disassembly and assembly of the office chair cylinder (pneumatic rod) should be carried out according to standardized procedures. The specific steps and precautions are as follows:

I. Disassembly Steps

1. Prepare Tools
   You will need a wrench, a flat-head screwdriver, pliers, and, if necessary, lubricating oil and a rubber mallet. Choose tools that match the screw specifications to avoid slipping or damaging the components.

2. Remove the Base
   Invert the office chair so that the seat faces downward and the base faces upward. Use a wrench to turn the screws and nuts connecting the base to the pneumatic rod counterclockwise, separating the base from the chair body. If the screws are rusty, spray a small amount of lubricating oil to aid in disassembly.

3. Disassemble the Pneumatic Rod

   • Secure the Pneumatic Rod: Use pliers to grip the middle of the pneumatic rod to prevent it from sliding or popping up.
   • Loosen the Flat-Head Nut: Insert a flat-head screwdriver into the flat-head nut at the top of the pneumatic rod and turn it counterclockwise until it is completely loosened.
   • Separate the Pneumatic Rod: If the pneumatic rod is tightly connected to the chair seat, apply lubricating oil to the joint and let it sit for 1-2 hours before trying again. If it still cannot be separated, use a rubber mallet to evenly tap along the bottom steel ring of the pneumatic rod until it detaches from the chair seat.
   • Disassemble the Chair Seat: If further disassembly of the chair seat is required, lightly tap the four corners of the chassis with a rubber mallet to loosen the clips and remove the seat.

II. Assembly Steps

1. Replace the Pneumatic Rod (Optional)
   If the pneumatic rod is damaged, purchase a new one of the same specifications. When installing, align the new pneumatic rod with the hole in the chair seat, ensuring that the top flat-head nut aligns with the fixing hole in the chair seat. Use a flat-head screwdriver to tighten the nut clockwise.

2. Install the Base
   Connect the base to the bottom of the pneumatic rod and use a wrench to tighten the connecting screws and nuts clockwise. After installation, return the chair to its upright position and gently press down on the seat to test whether the pneumatic rod's lifting function is normal.

3. Function Test
   Press the pneumatic rod repeatedly to check if the lifting is smooth, without any stuttering or abnormal noises. If a new pneumatic rod is installed, confirm that its height adjustment range meets the requirements.

III. Safety Tips

• Protective Measures: Lay a soft mat on the ground during operation to avoid scratching the floor or the surface of the pneumatic rod.
• Two-Person Collaboration: It is recommended that two people cooperate when disassembling the pneumatic rod, with one person securing the chair body and the other operating the tools to prevent the pneumatic rod from suddenly popping out and causing injury.
• Avoid Tapping the Central Iron Plate: When using a rubber mallet, control the force to avoid damaging the internal structure of the pneumatic rod.
• Regular Inspection: After long-term use, check the surface of the pneumatic rod for cracks or air leaks, and replace aging components in a timely manner.

By following standardized operations, you can ensure the safe and efficient disassembly and assembly of the office chair pneumatic rod, extending the service life of the furniture.