🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280C Body Style: Coupe (C) Generation Generation Code: W123 Codes Chassis Code: W123 Engine Code Family: M110 👋 Introduction Market Position Target Audience: Mercedes-Benz W123 280C owners, enthusiasts, and independent mechanics Competitive Analysis Comparison To Third Party: Actual Genuine Factory Manuals, not 3rd party alternatives Key Features Value Proposition: Saves significant labor costs compared to professional shop rates Content Advantage: Provides the same information as factory-trained technicians Usability: Easy to use, print only needed sections or the entire manual 📋 Manual Details Coverage Areas Applicable Years: 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Specific Models Covered: 280C Page Count Estimated Pages: Hundreds of pages (exact count not specified, but implies comprehensive) Manual Type Type: Factory Service Repair Manual Origin: Official Factory Manuals (Genuine) Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service: Yes Transmission Service: Yes Brake System: Yes Electrical System: Yes Wiring Diagrams: Yes Suspension: Yes Steering: Yes Cooling System: Yes Fuel Injection System: Yes Fuel System: Yes Emission Control System: Yes Heating And Air Conditioning: Yes Engine Control System: Yes Chassis And Body: Yes Restraint System: Yes Interior: Yes Differential And Drive Axle: Yes Procedures Included General Maintenance: Yes Troubleshooting: Yes Rebuilding Procedures: Yes Restoration Guidance: Yes Diagnostic Procedures: Yes Periodic Lubrication: Yes Technical Depth Depth: Complete Official Factory Level Repair Procedures Detail Level: Step-by-step instructions, detailed illustrations, diagrams, and photos 📊 Manual Specifications File Format Format: PDF Compatibility: All PC based Windows OS, Mac OS Searchability: Searchable function included for easy information retrieval Print Quality Printability: Printable without restriction (individual pages or entire manual) Resolution: High Resolution Binding Type Binding: N/A (Downloadable PDF) Paper Type Paper Type: N/A (Digital Delivery) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder Engine Code: M110 Displacement: 2.8 Liters (2781 cc) Valvetrain: Dual Overhead Camshaft (DOHC), 2 valves per cylinder Performance Horsepower Approximate: 145-155 hp (depending on market and emission controls) Torque Approximate: 230-240 Nm (depending on market and emission controls) Fuel System Fuel Delivery: Bosch K-Jetronic Mechanical Fuel Injection Fuel Type: Unleaded Gasoline Cooling System Cooling Type: Water-cooled Lubrication Oil Capacity Approximate: 6.5 Liters (including filter) Engine Control System Ignition System: Electronic Ignition (Distributor-based) 🔧 Transmission Standard Transmission Type: 4-Speed Manual (usually standard on 280C) Optional Transmission Type: 4-Speed Automatic (Optional) Features Automatic Transmission Control: Hydraulic Control Unit 📐 Dimensions Exterior Body Style: Coupe Wheelbase Mm: 2760 mm Length Mm: 4725 mm Width Mm: 1786 mm Height Mm: 1410 mm Weights Curb Weight Kg Approximate: 1500 - 1570 kg (depending on transmission and equipment) Gross Vehicle Weight Rating Kg Approximate: 2000 kg Towing Capacity Kg: Not officially specified or recommended for W123 coupes 🛡️ Safety Features Ratings Crash Test Data: Era-specific safety standards, known for robust construction but lacking modern active safety systems Active Features ABS: Optional on later models Passive Features Seatbelts: Standard, typically 3-point front, 2-point rear Crumple Zones: Yes, designed into the chassis structure Steering Column: Collapsible design 💡 Technology Features Infotainment Infotainment System: Basic analog radio, optional cassette player Speakers: Typically 4-6 speakers Driver Assistance Cruise Control: Optional Power Windows: Optional Air Conditioning: Optional Connectivity Connectivity Features: None (analog systems) 🔧 Maintenance Service Intervals Oil Change Interval Approximate: Every 7,500 - 10,000 miles (12,000 - 15,000 km) or annually Transmission Fluid Change Interval Approximate: Every 30,000 - 50,000 miles (50,000 - 80,000 km) for automatic, manual fluid varies Spark Plug Replacement Interval Approximate: Every 20,000 - 30,000 miles (30,000 - 50,000 km) Fluid Specifications Engine Oil Specification: API SG or SH, SAE 15W-40 or 20W-50 (refer to manual for precise recommendations) Automatic Transmission Fluid Specification: MB-Approval 236.1 (e.g., Dexron II) Coolant Specification: Ethylene glycol based, 50/50 mix with distilled water (MB-Approval 325.0 or equivalent) Brake Fluid Specification: DOT 3 or DOT 4 Known Issues Common Issues: Cracked dashboards, fuel distributor issues (K-Jetronic), vacuum hose degradation, rust (especially wheel wells and door bottoms), climate control actuator failure 📚 Vehicle History Brand Heritage Manufacturer Reputation: Renowned for engineering excellence, durability, and luxury Model Evolution W123 Introduction: Introduced in 1975 as a successor to the W114/W115 range W123 Positioning: Positioned as a mid-size executive car, known for its robust engineering and longevity 280C Specifics: The 280C featured the larger, more powerful M110 2.8L engine, offering enhanced performance in a stylish coupe body. Production Production Period: 1976-1985 (for the 280C model within the W123 series) Production Facilties: Primarily manufactured in Germany 🏆 Awards & Recognition Recognitions Model Acclaim: The W123 series is widely regarded as one of the most durable and reliable Mercedes-Benz models ever produced, often cited in automotive press for its longevity. Industry Status: Iconic model, represents the pinnacle of Mercedes-Benz's build quality during its era.