🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Chassis Code: W123 Engine Code: M110 (for 280E) Generation Generation Code: First Generation W123 Codes Body Styles Available In W123 Range: Sedan (Saloon), Estate (Station Wagon/T-Model), Coupe, Long Wheelbase Sedan 👋 Introduction Market Position Target Audience: DIY enthusiasts and experienced professional mechanics working on Mercedes-Benz W123 280E. Value Proposition: Cost-effective alternative to dealership service, enabling owners to maintain their vehicles themselves. Competitive Analysis Comparison To Oem Manuals: Provides equivalent technical depth and procedural guidance as official Mercedes-Benz workshop manuals of the era. Key Features Structured Instructions: Numbered, step-by-step instructions with detailed substeps for clarity. Safety Information: Includes notes, cautions, and warnings to highlight critical safety and procedural points. Visual Guidance: Utilizes hundreds of photos, illustrations, and enlarged insets for detailed part identification and procedure visualization. Navigation: Numbered table of contents for quick and easy access to specific repair information. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair for Mercedes-Benz W123 280E Secondary Coverage Potential: May include relevant information for other W123 gasoline models with similar M110 engine variants. Page Count Estimated Page Count: Refer to actual manual for precise count, but typically comprehensive repair manuals of this era exceed 500 pages. Manual Type Type: Service and Repair Manual Language Language: English Format Digital Format: PDF Compatibility: All Versions of Windows & Mac Requirements Software Requirements: Adobe PDF Reader & WinZip 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshafts, timing system, lubrication system. Fuel System: Fuel injection system (Bosch K-Jetronic), fuel pump, fuel filter, fuel lines, injectors, cold start system. Ignition System: Distributor, ignition coil, spark plugs, high-tension leads, ignition timing. Cooling System: Radiator, water pump, thermostat, cooling fan, coolant hoses, heater core. Exhaust System: Exhaust manifolds, catalytic converter (if applicable for market/year), muffler, exhaust pipes. Transmission Manual: Gearbox overhaul, clutch system, shift linkage, lubrication. Transmission Automatic: Overhaul of the automatic transmission (e.g., 4-speed or 5-speed), hydraulic control, torque converter, transmission fluid. Drivetrain: Driveshaft, universal joints, differential, rear axle assembly. Suspension Front: Control arms, ball joints, shock absorbers, springs, steering knuckles. Suspension Rear: Independent rear suspension components, trailing arms, shock absorbers, springs, sway bar. Steering: Steering box, power steering pump, steering column, tie rods, steering linkage. Brakes Front: Brake calipers, brake discs, brake pads, brake lines. Brakes Rear: Brake calipers/drums, brake discs/drums, brake pads/shoes, brake lines, parking brake mechanism. Electrical System Charging: Alternator, voltage regulator, battery, wiring. Electrical System Starting: Starter motor, ignition switch, neutral safety switch. Electrical System Lighting: Headlights, taillights, interior lights, turn signals, fuses, relays. Electrical System Accessories: Wipers, horn, power windows, power locks, radio, climate control components. Body And Chassis: Body panel repair, corrosion protection, structural components, door mechanisms, glass replacement. Climate Control: HVAC system, heater core, blower motor, air conditioning (if equipped), refrigerant system. Procedures Included Preventive Maintenance: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspections, brake checks. Troubleshooting: Diagnosis and repair of common and uncommon problems across all major systems, including electrical and fuel injection. Engine Rebuild: Complete disassembly, inspection, measurement, and reassembly procedures for the M110 engine. Transmission Overhaul: Detailed steps for dismantling, repairing, and reassembling both manual and automatic transmissions. Brake System Repair: Replacement of pads, discs, hoses, caliper rebuilds, bleeding procedures. Electrical Component Repair: Testing and replacement of starters, alternators, fuel pumps, wiring harness repairs. Suspension And Steering Repair: Replacement of wear items like ball joints, tie rods, bushings, shock absorbers, and steering components. Fuel Injection System Diagnosis: Troubleshooting and adjustment of the K-Jetronic system, including air flow meter, warm-up regulator, and injectors. Bodywork And Trim Removal: Instructions for removing and reinstalling interior and exterior trim panels, bumpers, and doors. Technical Depth Depth Of Information: Comprehensive, from basic maintenance to complete engine and transmission rebuilds. Diagnostic Capabilities: Detailed troubleshooting guides and electrical diagrams for diagnosing issues. Illustrations And Diagrams: Hundreds of photos, illustrations, and detailed wiring diagrams to aid comprehension. Component Level Detail: Focuses on individual component testing, repair, and replacement. 📊 Manual Specifications File Format Digital Format: PDF Searchability: Likely text-searchable PDF, enabling quick information retrieval. Print Quality Printability: All pages are printable, allowing for use in a workshop environment. Binding Type Digital Binding: N/A (Digital Download) Paper Type Digital Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, SOHC (Single Overhead Camshaft) Engine Displacement: 2.8 Liters (2799 cc) Engine Code Designation: M110.984 (typically for W123 280E) Performance Horsepower Approximate: 185 PS (approx. 182 bhp or 136 kW) at around 5800 rpm (may vary slightly by market and year). Torque Approximate: 240 Nm (approx. 177 lb-ft) at around 4000 rpm (may vary slightly by market and year). Fuel System Fuel Delivery: Bosch Continuous Injection System (CIS), commonly known as K-Jetronic. Fuel Type: Unleaded Gasoline (Premium) Engine Internals Bore X Stroke: 86.0 mm x 80.25...