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The Caterpillar 385B Excavator Service Repair Manual SN RCD – PDF is the official, factory-authorized technical guide tailored specifically for CAT 385B excavators with the RCD serial-number prefix. This comprehensive manual offers detailed, step-by-step instructions for servicing, diagnosing, and repairing all major systems within the machine. It covers engine diagnostics and overhaul procedures, hydraulic circuit maintenance, powertrain servicing, electrical system troubleshooting, cooling system care, undercarriage inspections, and structural component evaluations. The manual includes high-resolution exploded diagrams, wiring schematics, torque specifications, maintenance schedules, and troubleshooting flowcharts to ensure accurate and efficient repairs. Advanced repair procedures, such as disassembly and reassembly of swing motors and hydraulic pumps, are also detailed, complete with tooling requirements and cleanliness protocols to maintain system integrity. Delivered in a fully searchable, printable PDF format, the manual is optimized for use on desktops, tablets, and smartphones, making it ideal for both workshop and field applications. As an authentic OEM publication, it adheres to Caterpillar’s stringent engineering, safety, and performance standards, ensuring that your CAT 385B excavator (SN RCD) is maintained to the highest quality