Office Chair Bracket Replacement

The method for replacing the bracket of an office chair varies depending on the specific model, and the corresponding operation steps should be selected according to the chair model. Here are the replacement methods for two common models of brackets:

Replacing the New Third-Generation Tray for the P600 Computer Chair

1. Tool Preparation: Prepare four short screws (with a specification of 6×20) and a matching wrench.
2. Installation Steps: Align the new tray with the screw holes at the bottom of the seat cushion, ensuring full alignment of the holes; insert the four short screws one by one to initially fix the tray to the seat cushion; use the wrench to tighten each screw one by one to ensure a firm and non-loose connection.
3. Precautions: Before installation, confirm that the screw specification matches the hole position to avoid installation failure or damage to components due to size mismatch; apply even force when tightening the screws to prevent the tray from tilting.

Replacing the Bracket for the Runda D-Model Computer Chair

1. Removing the Old Bracket: Unfasten the seat cushion cover to expose the internal screw structure; use an Allen wrench to unscrew the 5×80 screws (usually located at the connection between the bracket and the seat cushion), and record the screw positions before removal for subsequent installation; after completely removing the old bracket, clean any residue on the surface of the seat cushion.
2. Installing the New Bracket: Align the holes of the new bracket with those of the seat cushion bracket, insert the 5×80 screws for initial connection, and do not fully tighten them at this time; adjust the position of the bracket to a horizontal state, ensuring that the armrests are aligned with the crossbar; use 5×40 screws and nuts to connect the armrest bracket to the crossbar, and partially tighten them first to fix the structure.
3. Final Fixation: After confirming that the positions of all components are correct, use an Allen wrench to fully tighten the 5×80 screws (at the connection between the seat cushion and the bracket) and the 5×40 screws (at the connection between the armrests and the crossbar) to ensure overall structural stability.
4. Precautions: Handle the seat cushion cover gently when removing it to avoid tearing the fabric; recording the screw positions can prevent omission or misalignment during installation; when tightening the screws, do it in stages, first for initial fixation and then for complete locking, to prevent component displacement.

General Advice: Before replacing the bracket, turn off the chair's pneumatic rod (if any) to avoid accidental lifting or lowering of the chair during operation; if you encounter rusted screws or misaligned holes, apply a small amount of lubricating oil to assist in removal, or contact the manufacturer for professional guidance.