Repair Office Chair Swivel Chair

Repairing an office chair or swivel chair requires targeted methods based on the damaged part. Here are the specific steps:

I. Repair of a Damaged Hydraulic Rod

If the hydraulic rod of the swivel chair cannot be raised or lowered, leaks oil, or breaks, it needs to be replaced. Steps:

1. Remove the old hydraulic rod: Turn the chair upside down and gently tap the edge of the hydraulic rod with a hammer (avoid tapping plastic parts to prevent breakage) to loosen and remove it. If the hydraulic rod is stuck, try spraying lubricant on the interface to assist in removal.
2. Select a suitable replacement: Measure the diameter, length, and stroke range of the old hydraulic rod and purchase a new one that matches the dimensions. Choose a model that matches the chair's load-bearing requirements (for example, a 28-diameter hydraulic rod is commonly used for ordinary office chairs).
3. Install the new hydraulic rod: Insert the new hydraulic rod directly into the base hole, ensuring it is fully inserted and does not wobble. After installation, test the lifting function to confirm there is no oil leakage or jamming.

II. Repair of Damaged Wheels

If the chair tilts or the wheels do not rotate smoothly, check the condition of the wheel feet. Steps:

1. Inspect the wheel feet for damage: Turn the chair upside down and observe whether each wheel foot is bent, deformed, or broken. If the wheel feet do not contact the ground evenly, replace the entire set of wheels (replacing a single wheel alone may lead to instability due to size differences).
2. Remove the old wheels: Some wheels are installed with fixed screws and can be removed by unscrewing the screws with a screwdriver; wheels without screws can be pried out from the interface between the wheel rod and the base with a screwdriver (be careful not to damage the base).
3. Install the new wheels: Apply lubricant (such as WD-40) inside the base wheel rod socket, align the new wheel rod with the socket and insert it vertically, and gently tap the top of the wheel rod with a rubber mallet until it is fully embedded. After installation, rotate the wheels to confirm they rotate smoothly without jamming.

III. Repair of a Damaged Base

If the base is cracked or broken (for example, damage at the binding mark due to long-term load-bearing), the entire base needs to be replaced. Steps:

1. Remove the old base: Turn the chair upside down and use a wrench or screwdriver to remove the connecting parts between the base and the hydraulic rod and wheel feet (such as fixed screws or buckles).
2. Select a suitable replacement base: Measure the diameter, hole spacing, and hydraulic rod interface size of the old base and purchase a new one that matches exactly. Ensure that the base material (such as nylon or metal) is the same as the original base.
3. Install the new base: Align the new base with the positions of the hydraulic rod and wheel feet, and fix it with screws or directly snap it in (choose the installation method according to the design). After installation, check the stability of the base to ensure there is no wobbling.

IV. Inspection of a Damaged Seat Plate

If the chair still tilts after replacing the wheels, check whether the seat plate (the square steel plate at the bottom of the seat) is deformed. Methods:

1. Observe the condition of the seat plate: Turn the chair upside down and check whether the four corners of the seat plate are flat and whether there are any signs of bending or breaking.
2. Temporary fixation test: If the seat plate is slightly deformed, use wooden wedges or rubber pads to level the four corners and test whether the chair returns to a horizontal position.
3. Replace the seat plate: If the deformation is severe, purchase a new one that matches the size and hole positions of the original seat plate exactly and fix it to the chair frame with screws.

Precautions: Wear gloves during the repair process to avoid scratches from metal parts; if hydraulic rod removal or base replacement is involved, it is recommended that two people work together to ensure safety.