🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Year: 1984 Chassis Code: W123 Codes Engine Code: M110 (likely) 👋 Introduction Market Position Target Audience: Do-it-yourself owners and experienced mechanics Value Proposition: Inexpensive way to keep the vehicle working properly, saving on professional labor costs Competitive Analysis Advantage: Official factory information, detailed procedures, extensive illustrations Key Features Accessibility: Instant download, no shipping costs or waiting time Organization: Numbered table of contents for fast information retrieval Visual Guidance: Detailed illustrations, drawings, photos, and enlarged insets 📋 Manual Details Coverage Areas Coverage Scope: Complete factory workshop service and repair Vehicle Variants Covered: All styles of the W123 280E Page Count Estimated Pages: Hundreds Manual Type Type: Workshop Service Repair Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete disassembly, inspection, and repair of engine components Engine Management: Fuel injection system (likely Bosch K-Jetronic), ignition system, emission controls Transmission: Manual and automatic transmission overhaul and repair Drivetrain: Clutch, driveshafts, differential, axle components Suspension: Front and rear suspension systems, shock absorbers, springs, bushings Steering: Power steering system diagnosis and repair Brakes: Hydraulic system, brake discs, pads, calipers, parking brake Electrical System: Wiring diagrams, starting system, charging system, lighting, accessories, fuses, relays Body And Chassis: Body panel repair, interior trim, door mechanisms, glass replacement Heating And Air Conditioning: HVAC system components and service (if equipped) Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication Troubleshooting: Systematic diagnosis of common and uncommon problems Repair: Step-by-step repair procedures for all major and minor components Disassembly Reassembly: Complete disassembly and reassembly guidance for entire vehicle systems Adjustments: Precise adjustments for engine timing, carburetor/fuel injection, clutch, etc. Technical Depth Depth Level: Comprehensive, from basic maintenance to full rebuilds Illustration Detail: Hundreds of photos, illustrations, and drawings Instruction Format: Numbered step-by-step instructions with detailed substeps Diagnostic Aid: Troubleshooting guides and electrical system diagnosis with wiring diagrams Safety Warnings: Notes, cautions, and warnings for critical information 📊 Manual Specifications File Format Format: PDF Readability: Viewable on all PC-based Windows operating systems and Mac Print Quality Printability: Printable without any restriction, entire manual or selected pages Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Software Requirement Reader Software: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, 4-stroke Displacement: 2.8 Liters (2799 cc) Bore X Stroke: 86.5 mm x 80.25 mm (typical for M110) Performance Horsepower Net: Approx. 155 hp @ 5000 rpm (verify with specific model data) Torque Net: Approx. 240 Nm (177 lb-ft) @ 3000 rpm (verify with specific model data) Fuel System Fuel Delivery: Mechanical Fuel Injection (Bosch K-Jetronic) Fuel Type: Unleaded gasoline Engine Management Ignition System: Electronic ignition system with distributor 🔧 Transmission Standard Transmission Type: 4-speed Manual Transmission (likely as standard) Optional Transmission Type: 4-speed or 5-speed Automatic Transmission (optional) Features Clutch: Single dry plate, hydraulically operated clutch 📐 Dimensions Exterior Body Styles: Saloon (4-door), Estate (S123), Coupe (C123), Convertible (A123 - rare) Wheelbase: Approx. 2810 mm (110.6 inches) Length: Approx. 4725 mm (186.0 inches) Width: Approx. 1790 mm (70.5 inches) Height: Approx. 1430 mm (56.3 inches) Weights Curb Weight: Approx. 1450-1550 kg (depending on body style and equipment) Gross Vehicle Weight: Approx. 1900-2000 kg 🛡️ Safety Features Ratings Crash Testing Era: Early era of automotive safety testing; official ratings may be limited Active Features Braking System: Four-wheel disc brakes (front ventilated), ABS (optional, introduced later in W123 production) Passive Features Seatbelts: Front and rear seatbelts Chassis Design: Reinforced safety cage, crumple zones 💡 Technology Features Infotainment Audio System: Factory-installed radio cassette player (optional or dealer fitted, various brands) Driver Assistance ABS: Optional, introduced during the W123 production run, not standard on all 1984 models Connectivity Connectivity Features: N/A (No modern connectivity features like Bluetooth or USB) 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km or annually (consult specific manual) Major Service Interval: Varies by component, but comprehensive checks recommended every 30,000-50,000 km Fluid Specifications Engine Oil: API SG or SH, SAE 15W-40 or 20W-50 (depending on climate, consult manual for exact specs) Coolant: Mercedes-Benz approved coolant (e.g., G05 or equivalent), 50/50 mix with distilled water Brake Fluid: DOT 4 Transmission Fluid Auto: Dexron II or III (verify MB approval) Known Issues Common Problems: Check for rust (especially around wheel arches, sills, sunroof), vacuum system leaks (affecting central locking, climate control, idle), timing chain wear (M110 engine), fuel distributor issues (K-Jetronic), and potential electrical connector corrosion. 📚 Vehicle History Brand Heritage Marque: Mercedes-Benz, renowned for engineering, durability, and luxury Model Evolution W123 Generation: Second generation of the 'mid-size' Mercedes-Benz, produced from 1976 to 1986 W123 Reputation: Known for exceptional build quality, longevity, and reliability, often called the 'tank' Production Production Period: 1976-1986 Production Volume: Over 2.7 million units produced across all body styles 🏆 Awards & Recognition...