CAT 077-3738 SEAT

CAT 077-3738 is a genuine Caterpillar operator seat (purely original and accurate information, no additional description). It is a mechanically suspended operator seat, compatible with the cabs of various CAT construction machinery, providing operator support and shock absorption, improving comfort and operational stability during long working hours.

Core Parameters and Information

Item Details
Part Model: CAT 077-3738 (0773738) Seat

Structure Type: Mechanically Suspended Operator Seat, including seat cushion, backrest, mechanical shock-absorbing base, adjustment mechanism, and safety belt

Material: Seat cushion/backrest fabric is wear-resistant and stain-resistant polyester fiber; frame is high-strength carbon steel; shock-absorbing springs are 65Mn spring steel

Key Dimensions: Total width 650 mm, total height 980 mm; seat cushion width 520 mm, depth 480 mm, thickness 120 mm; backrest height 600 mm, thickness 100 mm

Performance Parameters: Mechanical suspension travel ±50 mm, shock absorption frequency 3-5 Hz, rated load 120 kg, operating temperature -30℃ to 70℃

Compatibility Standard: Complies with ISO 3471 seat safety standard; frame strength ≥1500 N; fabric abrasion resistance ≥5000 N. Martindale Test
Compatible Models and Assemblies
Compatible Parts: Seat rails, seat belt assemblies, seat mounting base
Compatible Equipment: CAT 320D2/323D2 excavators, 966M/972M loaders, D6T bulldozers, etc., for operator seating support and shock absorption in the cab.
Installation: 1 piece per machine, installed on the cab floor rails, absorbing vibration and impact during operation through mechanical suspension shock absorption.
Installation and Maintenance Points
Before installation, check that the seat frame is not deformed, the shock-absorbing springs are elastic, the adjustment mechanism is flexible, and the seat belt is undamaged.

Secure the seat to the cab rails, tighten the fixing bolts to a torque of 50-60 N·m, ensuring a secure and loose installation.

Adjust the seat’s fore-and-aft position, backrest angle, and seat cushion height to fit the operator’s body type, ensuring convenient operation and comfortable seating.

Maintenance: Check the elasticity of the shock-absorbing springs, the lubrication status of the adjustment mechanism, and the tightness of the bolts every 1000 hours; clean the fabric promptly when it is dirty, and replace it when it is damaged to ensure safe and comfortable use.