Office Chair Base Repair

Repairing an office chair base requires taking targeted measures based on the specific fault. Here are common faults and repair methods:

If the base is broken, you can refer to the welding repair tutorial for office chair bases for repair. First, determine the location and extent of the breakage. If the broken surface is flat and there is no severe deformation, welding can be used for repair. However, ensure that the structural strength after welding meets the usage requirements to avoid a second breakage.

If there are faults such as sideways tilting or inability to adjust the height, you need to disassemble the chair first to determine the fault location. Disassembly steps:

1. Prepare tools: a rubber mallet (or an ordinary hammer with a towel underneath), screwdrivers, wrenches, etc.
2. Place the chair upside down on the ground, remove the screws that fix the bottom tray, and separate the seat cushion from the base.
3. Disassemble the chassis, gas lift, and chair legs in sequence:
   • When disassembling the chassis, hold the chair upside down with one hand and strike a specific position on the chassis with a rubber mallet. After a few strikes, the chassis can be separated.
   • If there is a fault with the gas lift (such as inability to adjust the height or stuttering), place the chair upside down and strike the bottom of the gas lift flatly with the side of a hammer. Be careful not to touch the button in the middle of the gas lift, and make sure to use a gas lift with relevant system certifications such as SGS and TUV to avoid safety hazards caused by using inferior products.

If the base is unstable, it is usually caused by loose screws, worn parts, or problems with the gas cylinder. The repair steps are as follows:

1. Diagnose the problem:
   • Sit on the chair and rock it back and forth and side to side to feel the source of the wobbling and abnormal noises.
   • When the screws are loose, the wobbling may be accompanied by a creaking sound, or there may be a noticeable gap at the connection points.
   • When the parts are worn or damaged, the chair may still have structural looseness, play, or abnormal noises even after tightening all the screws.
   • A problem with the gas cylinder is manifested by a significant sinking feeling and play when pressing the chair vertically, or abnormal wobbling when rotating it side to side that is unrelated to the screws. Do not disassemble or repair the gas cylinder by yourself at this time, and contact a professional for handling.
2. Prepare tools: screwdrivers (flat-head and Phillips-head), wrenches (adjustable wrenches or open-end wrenches), Allen wrenches, pliers, and glue (such as 502 glue, wood glue, or special anaerobic thread-locking glue, optional).
3. Carry out targeted repairs:
   • Loose screws: Find and tighten the loose screws (such as the screws connecting the backrest and the seat frame, the screws connecting the bottom of the seat to the lifting bracket, and the screws at the connection between the five-star base and the gas cylinder base). For screws that keep coming loose repeatedly, you can use glue to enhance the fixation before tightening them by applying it inside the screw hole or on the screw threads.
   • Worn parts: If parts such as the chassis or chair legs are severely worn, replace the corresponding parts.