Office Chair Wobbling Left and Right

The left-and-right wobbling of an office chair can be resolved by identifying the cause through troubleshooting the wobbling location and then performing targeted repairs. Details are as follows:

Troubleshooting the Wobbling Location

• Feel the wobbling part: After sitting down, gently sway your body forward, backward, left, and right to identify the part where the wobbling is most pronounced, such as the armrests, seat cushion, base, or the connection between the chair legs.
• Check the screws: Pay special attention to the screws on the inner side of the armrests, the bottom of the seat cushion, and the interface between the base and the gas lift. If the screws are loose, there will be gaps around the screw holes.
• Test the gas lift: Rotate the chair to observe if there is any stuttering and check if the height adjustment is smooth. If the height adjustment is not working properly or the rotation is stiff, it may be due to wear on the gas lift or base components.
• Examine the connection between the chair legs and the crossbar: For wooden chairs or chairs with fabric straps, if the connection is loose, it may be because the rubber bands or elastic fabric straps have lost their elasticity or the tenons have come loose.

Targeted Repair Steps

• Loose screws: Use a screwdriver or wrench to loosen the loose screws counterclockwise. Spray a small amount of WD40 around the screw holes for lubrication and rust removal, and then tighten them clockwise. If the screw holes are enlarged due to wear, take a toothpick or a thin wooden stick, dip it in white glue, and insert it into the hole. After the glue dries, screw the screw back in.
• Worn or leaking gas lift: Spray WD40 on the connection between the gas lift and the base and let it sit for 1 minute. Use a hairdryer on the hot air setting to blow on the connection to make the metal parts expand with heat, making them easier to separate. Use a heavy-duty pipe wrench to grip the gas lift, rotate it counterclockwise, and pull out the old lift with force. Clean the installation hole in the base, insert the new gas lift vertically, and tap it gently with a hammer to secure it. The overall cost of replacing a gas lift is about 19 yuan.
• Deformed base or worn components: Remove the bottom cover and check if the plastic clips are brittle and broken or if the axle of the casters is misaligned. If only the clips are loose, use pliers to reset them. If the plastic parts are broken or the casters are severely crooked, replace the entire base assembly directly, and make sure to choose components of the same model.