Leather Office Chair Installation

The installation of a leather office chair requires adjusting the steps according to the specific model. The common installation process and precautions are as follows:

I. General Installation Process

1. Basic Component Assembly

   • Chair Wheel and Pneumatic Rod Installation: Insert the chair wheels into the holes of the five-claw base, ensuring the clips are fully embedded. Insert the pneumatic rod vertically into the center hole of the five-claw base and press lightly to the bottom to secure it. This step requires checking whether the chair wheels rotate smoothly and whether the pneumatic rod's lifting function is normal.
   • Base and Seat Cushion Connection: Align the base with the screw holes on the bottom of the seat cushion and use the matching screws (such as B screws) for preliminary fixation. Note that the screws should be tightened in stages (first tighten 3-4 turns, then gradually tighten each one until fully secured) to avoid base tilting.

2. Core Structure Installation

   • Pneumatic Rod and Seat Cushion Combination: Align the bottom of the assembled seat cushion with the top of the pneumatic rod and press down vertically until fully embedded to ensure a secure connection.
   • Backrest Fixation: Align the bottom of the backrest with the bracket holes at the rear of the seat cushion, use C screws for preliminary fixation, and then use D screws and a wrench to lock the backrest and seat cushion brackets. Two people are required to collaborate to prevent backrest displacement.

3. Detail Component Installation

   • Armrest and Headrest Installation: Align the armrests with the holes on the sides of the seat cushion and backrest, and use E screws to pass through the clips for fixation. For the headrest, first install the bracket onto the backrest iron sheet, then cover the screw holes with a triangular cover, and finally snap in the headrest and adjust the angle.
   • Decorative Cover and Adjustment: Install the backrest angle adjustment device (such as adjusting the indicator arrow for the Deli 91029) and cover it with a decorative cover to hide the screws.

II. Model Differences and Special Steps

• Deli Office Chair 91029: An additional ball pressing installation is required (used to adjust the backrest resistance), and the total number of screws is 8, which should be fixed according to the positions marked in the instruction manual.
• Zhufu Bow-shaped P-model Leather Chair: Before installation, manually clean the burrs in the screw holes. When aligning the connecting rods, press firmly to ensure the holes are fully aligned. The hexagon socket screws should be tightened until they can no longer rotate.

III. Key Precautions

1. Refer to the Instruction Manual First: The screw specifications and hole designs may vary among different brands (such as Deli and Zhufu). Forced installation may cause component damage.
2. Tighten Screws in Stages: Avoid tightening the screws all at once to prevent deformation of the base or backrest, especially at the metal bracket connections.
3. Safety Inspection: After installation, test the lifting function of the pneumatic rod, the rotation of the chair wheels, and the adjustment function of the backrest to ensure there is no looseness or abnormal noise.

If a specific model (such as 'Deli 91029' or 'Zhufu P-model') is provided, more targeted guidance can be further supplemented.