🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Year: 1976 Codes Chassis Code: W123 Engine Code Group: M110 👋 Introduction Market Position Target Audience: Do-it-yourself owners and experienced professional mechanics Competitive Analysis Value Proposition: Inexpensive way to keep vehicle working properly, saves on dealership service costs Key Features Content Enhancements: Hundreds of photos and illustrations, detailed substeps, notes, cautions, warnings, numbered instructions, bold figure numbers, enlarged insets Delivery Method Delivery: Instant download via link on checkout page 📋 Manual Details Coverage Areas Coverage Type: Complete Official Factory Workshop Service Repair Manual Page Count Estimated Page Count: Hundreds of Pages (Digital) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Engine mechanicals, fuel injection (Bosch K-Jetronic), ignition system, cooling system, lubrication system Transmission: Manual and automatic transmission overhaul, clutch, drive axles Brakes: Brake system diagnostics, repairs, hydraulic components, parking brake Electrical: Complete electrical system diagnostics, wiring diagrams, lighting, instrumentation, power windows, central locking Suspension Steering: Front and rear suspension components, steering gear, power steering system Bodywork: Body panel removal and installation, interior trim, seals, doors, windows, bumpers Procedures Included Maintenance: Routine maintenance checks, oil changes, filter replacements, fluid checks Repair: Step-by-step repair procedures for all major vehicle components Troubleshooting: Comprehensive troubleshooting guides for common and uncommon issues Diagnostics: Diagnostic procedures for mechanical and electrical systems Technical Depth Depth: Complete disassembly and reassembly instructions, detailed component overhauls 📊 Manual Specifications File Format Digital Format: PDF Print Quality Printability: Printable without restriction Binding Type Binding Type: Digital Download (Printable) Paper Type Paper Type: N/A (Digital) Software Requirements Reader Requirement: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder, Four-Stroke Engine Code: M110.984 (for 280E) Displacement: 2746 cc (2.8 Liters) Bore X Stroke: 86.0 mm x 78.8 mm Performance Horsepower Net SAE: 185 PS (182 hp; 136 kW) at 5800 rpm Torque Net SAE: 240 Nm (177 lb-ft) at 4000 rpm Fuel System Fuel Delivery: Bosch K-Jetronic Mechanical Fuel Injection Fuel Type: Unleaded Gasoline (Premium) Ignition System Ignition Type: Breakerless Electronic Ignition Cooling System Cooling Type: Water-Cooled Lubrication System Oil Capacity With Filter: Approx. 7.5 Liters (20W-50 or similar premium oil recommended, check manual for exact spec) 🔧 Transmission Standard Transmission Type: 4-Speed Manual Transmission (Standard) Optional Transmission Type: 4-Speed Automatic Transmission (Optional) Features Automatic Transmission Features: Hydraulic torque converter, selector lever positions (P, R, N, D, 3, 2) Fluid Specifications Automatic Transmission Fluid: Dexron III or equivalent (verify with specific vehicle maintenance records or manual) 📐 Dimensions Exterior Length: Approx. 4725 mm (186.0 inches) Width: Approx. 1790 mm (70.5 inches) Height: Approx. 1440 mm (56.7 inches) Wheelbase: Approx. 2795 mm (110.0 inches) Weights Curb Weight: Approx. 1450-1550 kg (3197-3417 lbs) depending on options 🛡️ Safety Features Passive Features Seat Belts: Standard front and rear seat belts Safety Cage: Reinforced safety cell construction Steering Column: Collapsible steering column 💡 Technology Features Infotainment Audio System: Original period-appropriate Blaupunkt or Becker radio units (often with cassette or AM/FM tuner) Driver Assistance Cruise Control: Optional cruise control system available on some models Comfort Features Air Conditioning: Optional factory-installed air conditioning system Power Accessories: Available power windows, power antenna, central locking 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 - 7,500 miles or 6-12 months (refer to manual for specific recommendations based on driving conditions) Tune Up Interval: Spark plugs, fuel filter, air filter typically inspected/replaced at 15,000-30,000 mile intervals Fluid Specifications Coolant: Mercedes-Benz Approved Antifreeze/Coolant (Glysantin G05 or equivalent with correct silicate content) Brake Fluid: DOT 3 or DOT 4 Brake Fluid (check manual for specific type) Known Issues Common Wear Items: Fuel distributor seals, vacuum lines, suspension bushings, exhaust system components, climate control O-rings (for A/C equipped vehicles) Electrical Gremlins: Corrosion in wiring harnesses, failing voltage regulator, switch failures (especially older cars) 📚 Vehicle History Brand Heritage Brand Legacy: Mercedes-Benz is renowned for its engineering excellence, build quality, and luxury automotive heritage. Model Evolution W123 Introduction: The W123 series was introduced in 1976, replacing the W114/W115 series. It was celebrated for its robust engineering and long lifespan. 280E Positioning: The 280E was a top-tier model within the W123 range, featuring the larger M110 engine with fuel injection for enhanced performance and efficiency. Production W123 Production Years: 1976 - 1986 🏆 Awards & Recognition Recognitions Build Quality Reputation: The W123 is widely recognized for its legendary build quality and durability, often referred to as 'over-engineered'. Ratings Longevity: High reliability and longevity; many examples have exceeded 500,000 miles with proper maintenance.