Full Disassembly Guide for Office Chairs

The full disassembly of office chairs requires following scientific steps and adjusting operations according to different types of chairs, as detailed below:

I. Basic Disassembly Steps

1. Identification and Preparation of Components
   Office chairs typically consist of parts such as chair legs, casters, bases, seats, gas cylinders, backrests, armrests, and headrests. Before disassembly, prepare tools (e.g., screwdrivers, rubber mallets, wrenches) and take photos to record the connection methods of each component for easy reassembly later.

2. Separation of Backrest and Seat
   Achieve separation by loosening the screws connecting the backrest and seat. Some chairs may use a snap-fit structure, requiring gentle prying with a tool at the snap location to avoid breaking plastic parts through violent disassembly.

3. Removal of Base and Gas Cylinder

   • Base Removal: Raise the gas cylinder to its maximum height, hold the seat with one hand, and press and shake the height adjustment lever with the other hand to detach the base from the gas rod.
   • Gas Cylinder Extraction: Invert the chair legs and gently tap the bottom of the gas cylinder with a rubber mallet (or a wooden board as a cushion) to loosen it through vibration and then pull it out. Note: Gas rods that have been used for a long time may be tightly fitted to the chair legs due to rust, requiring controlled force to prevent the gas rod from popping out and causing injury.

4. Disassembly of Other Parts
   Reverse the installation order and loosen the screws to disassemble components such as armrests and headrests. If there are hidden screws between components (e.g., inside the cover beneath the armrests), remove the cover before proceeding.

II. Disassembly Points for Special Types of Office Chairs

1. Electric Function Chairs (e.g., Livorno Executive Chairs)
   These chairs integrate electric adjustment components (e.g., independently controlled motors for headrests, backrests, and leg rests) and additional functions (massage and heating circuits). Before disassembly:

   • Power Off and Mark Wires: Turn off the power and mark the connecting wires between the motors and control board with insulating tape to avoid short circuits or incorrect connections.
   • Step-by-Step Motor Disassembly: Prioritize disassembling non-core functional components (e.g., leg rest motors) before handling backrest and headrest motors to prevent wire entanglement due to complex structures.

2. Office Chairs Modified from Car Seats
   It is necessary to focus on checking the compatibility between the original car seat and the office chair base:

   • Stability Verification: Confirm that the load-bearing structure of the modified base matches the fixing points of the original car seat to avoid base deformation due to uneven force during disassembly.
   • Original Car Wire Handling: If the original seat has safety airbags or heating functions, disconnect the wires in advance and insulate them to prevent triggering safety mechanisms during disassembly.

III. Safety Precautions

• Protective Measures: Wear gloves to prevent screw scratches and goggles when operating the gas cylinder to avoid parts flying.
• Environmental Requirements: Disassemble on a flat and dry floor to prevent the chair legs from sliding or tools from slipping.
• Handling of Long-Term Idle Chairs: If the gas rod is aged (e.g., stuck height adjustment or air leakage), replace it with a new one after disassembly to avoid risks during reassembly and use.