Description
CAT 077-3330 SEAT ASSY B
| CAT 077-3330 SEAT ASSY B |
| CAT 077-3545 RETAINER |
| CAT 077-3553 BEARING RETA |
| CAT 077-3600 BEARING |
| CAT 077-3655 RING-RTNG |
| CAT 077-3738 SEAT |
| CAT 077-3765 RETAINER BAR |
| CAT 077-3814 RING LOCK |
CAT 077-3330 is Caterpillar Genuine Seat Component B (purely genuine factory information, no additional description), a core assembly component of the mechanical suspension seat, compatible with excavators such as the 312 GC, 313 GC, 316 GC, 320 GX, and 323 GX, used for the complete assembly and functional implementation of the Cat® seat assembly…
Core Parameters and Information
Item Details
Part Model: CAT 077-3330 (0773330) Seat Assembly B
Structure Type: Mechanical suspension seat assembly, including frame, slide rail, adjustment mechanism, seat belt, etc.
Material: Carbon steel frame, durable fabric/leather-textured vinyl fabric, metal adjustment parts
Key Dimensions: Fits standard excavator seat mounting position, slide rail travel approx. 150 mm, backrest angle adjustment range 90° – 120°
Performance Parameters: Mechanical suspension travel approx. 50 mm, rated load 120 kg, operating temperature -30℃ to 60℃
Compatibility Standard: Complies with CAT seat assembly technical specifications, mounting hole tolerance ±0.5 mm, adjustment mechanism life ≥50,000 cycles
Compatible Models and Assemblies
Compatible Parts: 077-3091 Seat body, seat slide rail, adjustment handle, three-point seat belt
Compatible Equipment: CAT 312 GC/313 GC/316 For GC/320 GX/323 GX excavators, this machine is used for assembling a mechanical suspension seat assembly.
Installation: One set per seat, assembled with the seat body and other accessories, and bolted to the cab floor.
Installation and Maintenance Points:
Clean the mounting surface and check for deformation or cracks in the components. Ensure the slide rails match the seat body and the mounting holes are aligned.
Install the components according to their positions and tighten the bolts (tightening torque 25-30 N·m) to ensure smooth slide rail movement and flexible adjustment mechanism.
After installation, check that the seat belt locks properly, the backrest and fore-and-aft positions are adjusted correctly, and the suspension function is free of jamming or abnormal noise.
Maintenance: Every 2000 hours, check the slide rail lubrication and bolt tightness. Perform maintenance promptly if the adjustment mechanism is jammed or loose, and replace damaged fabric immediately.
