Office Chair Repair

The repair of office chairs requires targeted measures based on specific issues. Common problems and their solutions are as follows:

1. Repair of the Sihoo C500 Second Generation Deluxe Backrest Gliding Mechanism
If the backrest bone block is loose and fails to stay securely in place, it is necessary to disassemble the back cover and aluminum alloy cup holder for tightening. The specific steps are as follows:

• Disassemble the back cover: Gently pry open the lower edge of the back cover, taking care not to apply excessive force that could break the clips.
• Remove the screws: Use an appropriately sized screwdriver to remove the five fixing screws on the back cover. Keep the screws safe to prevent loss.
• Detach the cup holder: Gently shake and lift the aluminum alloy cup holder to separate it from the backrest bone block. Check the connection point of the bone block for wear or deformation.
• Reinstall: If the bone block is undamaged, clean the dust from the connection area and reinstall the cup holder along the original path. Tighten the screws and secure the back cover. If the bone block is worn, replace it with a part of the same model.

2. Fixing an Office Chair That Leans to One Side
The leaning issue is usually caused by abnormalities in the wheels or seat plate and should be investigated using the following process:

• Check wheel contact with the ground:
  • Place the chair upright and upside down to observe whether all wheel feet are in contact with the ground. If the ground is uneven, adjust the chair's position or level the ground.
  • Invert the chair to check if the wheel feet are damaged (e.g., broken or deformed). If damaged, purchase matching wheels for replacement. Note that the shape (e.g., round, square) and size of the wheel axle must match the original wheels to avoid installation difficulties.
• Check the seat plate:
  • If the wheels are in good condition and the ground is level, lay the chair on its side to locate the metal seat plate and check for deformation or loose connections.
• Replace or lubricate the casters:
  • Remove old wheels: Pull out detachable wheels directly. If stuck, insert a flat-head screwdriver into the gap between the wheel foot and the chair contact point, gently pry back and forth, and pull again after pulling out about 1 centimeter. If the wheel is fixed with screws, use a screwdriver to loosen the screws and remove the wheel.
  • Lubricate and install: Apply a small amount of spray lubricant (e.g., WD-40) or a pea-sized amount of petroleum jelly to each chair base socket to reduce friction. Tap the new wheels into the sockets with a rubber mallet to ensure they are securely installed.
  • Test and recheck: Invert the chair to test if the new wheels are stable. If it still leans, further inspect the seat plate for cracks or deformation and replace it if necessary.