Office Chair and Computer Chair Repair

The repair of office chairs and computer chairs requires selecting appropriate methods based on specific fault conditions. Common faults and repair steps are as follows:

Repair of the backrest gliding mechanism of the Sihoo C500 Second Generation Deluxe If the backrest bone block is loose and fails to lock tightly, the aluminum alloy cup holder needs to be disassembled for repair. Specific operations: Pry open the back cover from the lower edge, remove the 5 fixing screws, take out the aluminum alloy cup holder, inspect the internal structure, clean the card slot or replace worn parts, and finally reinstall and tighten the screws along the original path.

Repair of the chassis tray and gas lift If the chair leans to one side or cannot be raised or lowered, the chassis and gas lift need to be disassembled:

1. Tool preparation: Preferably use a rubber mallet; if not available, an iron hammer with a towel as a cushion can be used as an alternative.
2. Disassembly steps: Turn the chair upside down, remove the screws fixing the bottom tray, and separate the seat cushion from the chassis; hold the chassis upside down with one hand and strike a specific position with a rubber mallet (or strike several times with an iron hammer cushioned by a towel) to separate the chassis; if the fault is in the gas lift, turn the chair upside down and strike the bottom of the gas lift from the side with a hammer (avoiding the middle buckle), and choose a gas lift with SGS or TUV certification to ensure safety.
3. Replacement of parts: Replace damaged chassis, gas lift, or chair leg parts according to the fault location.

Repairing an office chair that leans to one side

1. Inspect the wheels:
   • Place the chair upright and upside down to confirm that each wheel foot makes even contact with the ground; if a wheel is damaged, purchase a new wheel of a matching model (can be matched by contacting the manufacturer or taking the old wheel to an office supplies store).
2. Remove the old wheels:
   • Hold the wheel and the bottom of the chair with both hands and pull firmly; if it cannot be pulled out, insert a flat-head screwdriver into the gap between the wheel foot and the chair, slowly pry about 1 centimeter, and then pull again; a very small number of wheels are fixed with screws and need to be removed by loosening the screws with a screwdriver.
3. Lubricate and install:
   • Spray a small amount of WD-40 lubricant (or apply a pea-sized amount of Vaseline) into each base socket; knock the new wheel into the socket with a rubber mallet, ensuring that the wheel rod is aligned with the base, first push lightly to confirm the locking position, and if not in place, lightly knock near the base of the stem.
4. Test and troubleshoot:
   • Turn the chair upside down to test the new wheels; if it still leans, further inspect whether the seat plate is deformed or damaged.

Repair precautions: Wear gloves during operations to prevent scratches, and control the force when striking parts to avoid damaging the structure; if repairing the gas lift, be sure to confirm its certification mark to prevent the risk of explosion.