How to Repair Office Chairs
The repair methods for office chairs vary depending on the type of fault. Here are the repair steps for common issues:
Repairing an Office Chair That Leans to One Side
If the chair leans to one side, first check whether the wheels are uneven when the chair is placed upright and upside down, ensuring that each wheel foot is in contact with the ground. If a damaged wheel is found, purchase a new set of matching wheels for replacement. To remove the old casters, hold the wheel of the caster with one hand and the bottom of the chair with the other hand, then pull firmly. If it cannot be pulled out, use a flat-head screwdriver as a lever. In rare cases, if the caster is fixed with screws, use a screwdriver to loosen the screws and remove it. Apply a small amount of spray lubricant (such as WD-40) or a pea-sized amount of petroleum jelly to each socket on the chair base, then use a rubber mallet to tap each caster into its socket on the chair. Finally, turn the chair upside down and test the new wheels. If it still leans, continue to check whether the seat plate is damaged.
Repairing a Sinking Office Chair
Using a Hose Clamp: Slide the plastic skirt down from the cylinder and adjust the chair to a suitable height (the seat of the chair should be level with your knees when standing). If the plastic skirt covers the cylinder, remove it first (turn the chair upside down, use a screwdriver to push the fixing clips on the base, remove the wheels and the skirt, and then reinstall the wheels). Wrap the hose clamp around the cylinder without tightening it first. You can improve the grip of the clamp by wrapping rubber bands or tape around the cylinder or sanding the cylinder area. Tighten the clamp as much as possible, fix the screws after confirming that the chair is at the correct height. If the chair height is incorrect, move the position of the clamp. If the clamp slips, you can fix it with a rubber strip or try the PVC pipe method. Using PVC Pipe: Measure the diameter of the cylinder on the chair and its length at the ideal height. Purchase a PVC pipe that is the same diameter as the cylinder or slightly larger. You can also use a plastic shower ring (but it may not be strong enough). Secure the pipe in a vise and use a hacksaw or reciprocating saw to saw from one end of the pipe to the other, only sawing on one side to make it longitudinally split. It is recommended to wear a mask or respirator when cutting. If you don't have a vise or cutting tools, keep the pipe intact, remove the chair wheels, and then slide on the pipe. Push the cut side of the pipe onto the cylinder so that it is clamped around the cylinder to fix the chair.
Repairing an Office Chair with a Backrest That Won't Stay Upright
If the chair backrest won't stay upright, there is a problem with the hydraulic system. The backrest is adjusted by theไผธ็ผฉ (telescopic) movement of the hydraulic rod. When the hydraulic system fails, the backrest won't stay upright. Lay the chair on its side and check the drive components starting from the backrest. If the chair toggle is normal and the hydraulic mechanism drops directly when pulled, check the pivot fixing screws. The pivot fixing screws are non-standard 10*1 screws. You can directly use standard No. 10 screws as a replacement. You can use a tap to re-thread the screws or directly use a wrench to fit the screws. Install the screws in their original positions with a length of 30 millimeters. The original ones are shorter. Since the screws are forced in, the nut-bolt fit is not qualified. You can screw a nut onto the bolt. The screw installation should not interfere with the range of motion of the hydraulic rod, which can be solved by adding washers.
