CAT 6N-8629 Governor Spring Seat

The CAT 6N-8629 is a genuine Caterpillar mechanical suspension operator seat, compatible with many classic bulldozers, loaders, and other models. It emphasizes durability and basic comfort for medium to heavy-duty work conditions. The following are the original specifications and do not include information on replacement parts.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model: 6N-8629, Type: Mechanical Spring Suspension Seat (High Back, with Adjustable Armrests), Suitable for bulldozer, loader, and other machinery cabs, Single Weight: 18 kg, Operating Temperature: -30℃ to +80℃, Fabric: Black abrasion-resistant vinyl, Equipped with mechanical spring shock absorption, providing basic shock absorption and support to alleviate fatigue during long-term operation.

Key Dimensions (Metric/Imperial):
Seat Width: 457 mm (18 in),
Seat Depth: 420 mm (16.5 in),
Backrest Height: 680 mm (26.8 in),
Total Height (including suspension): 820 mm (32.3 in),
Suspension Travel: 50 mm (2 in),
Mounting Hole Spacing: 305×305 mm (12×12 in),
Suitable Installation Space: Length ≥ 500 mm, Width ≥ 500 mm, Height ≥ 850 mm

Performance Parameters
Load Capacity ≤ 120 kg kg, adjustable spring stiffness (suitable for different weights), shock absorption frequency 5-8 Hz, adjustable backrest angle 90°-110°, adjustable armrest height 60-100 mm, seat fore-and-aft adjustment travel 150 mm, wear resistance life ≥12000 hours, vinyl fabric oil-resistant, stain-resistant, and anti-aging performance ≥5 years.

Structure and Compatibility Characteristics

Mechanical Spring Suspension: Employs a dual-spring mechanical suspension structure, requiring no power supply, compatible with older models without electrical systems, effectively filtering ground bumps and reducing vibration transmission; simple structure and low maintenance costs.

Durable Fabric Design: Black vinyl fabric is oil-resistant and easy to clean, suitable for dusty and oily construction environments; high-back design provides lumbar and back support, suitable for long-term work conditions of 8 hours or more.

Universal Compatibility: Compatible with classic bulldozer models such as D5, D6C, and D7G, loaders such as 950B and 966C, and some graders and road rollers’ cabs, replacing old seats and improving operating comfort and safety.

Installation and Maintenance Points (Original Data)

Installation: Clean the mounting base (free of oil and rust), tighten bolts (M12×1.75, torque 55-65 N・m), ensuring the seat is installed horizontally, the suspension mechanism is free of jamming, and the fore-and-aft adjustment is smooth. After installation, the seat should be free of looseness and abnormal noise.

Maintenance: Check the springs, hinges, and adjustment mechanism every 2000 hours. Apply lithium-based grease (every 1000 hours, approximately 3-5 g each time). Replace seat covers immediately if the fabric is damaged. Replace the entire seat assembly if the suspension travel is less than 30 mm or the springs fail to prevent fatigue caused by shock absorption failure.