🏷️ Basic Information Identification Make: Mercedes-Benz Model: W123 280E Production Years: 1976-1985 Codes Chassis Code: W123 👋 Introduction Market Position Target Audience: Mechanical Technicians, Experienced DIY Mechanics Competitive Analysis Advantage: Provides comprehensive coverage akin to authorized dealer service departments, emphasizing proprietary component repair. Key Features Safety Emphasis: Includes warnings, cautions, and notes regarding safety procedures and the use of safety equipment (e.g., torque wrench). Diagnostic Aid: Offers diagnostic and repair procedures for troubleshooting issues. Cost Saving: Enables owners to perform maintenance and repairs, saving on labor and overhead costs. 📋 Manual Details Coverage Areas Covered Years: 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Page Count Total Pages: 559 Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Systems: Fuel System, Ignition System, Lubrication System, Cooling System, Engine Mechanical (Disassembly/Reassembly), Emission Control Drivetrain Systems: Transmission (Manual & Automatic), Driveshaft, Differential, Axles Chassis Systems: Suspension (Front & Rear), Steering System, Brake System (Hydraulic & Parking), Wheels & Tires Electrical Systems: Electrical System Overview, Wiring Diagrams, Lighting, Instruments & Gauges, Starting & Charging System, Ignition System, Power Accessories Body Systems: Body Construction, Doors, Hood, Trunk, Windows, Seats, Interior Trim, Body Repairs Procedures Included Maintenance Procedures: Routine Maintenance, Tune-Ups, Fluid Changes, Filter Replacements, Inspection Procedures Repair Procedures: Component Removal and Installation, Overhaul Procedures, Engine Rebuild, Transmission Repair, Brake System Servicing, Electrical Component Repair Diagnostic Procedures: Troubleshooting Guides, Symptom-Based Diagnostics, Component Testing Procedures Special Procedures: Proprietary Component Repair Instructions, Use of Special Tools Technical Depth Depth: Comprehensive (from routine maintenance to full engine/transmission overhaul) 📊 Manual Specifications File Format File Type: PDF Print Quality Printable: Yes Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) Delivery Delivery Method: Electronic Delivery via Email ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder (M110 engine family) Displacement: 2.8 Liters (2780 cc) Performance Horsepower Range: Approx. 138-145 hp (gross), dependent on specific model year and emissions equipment. Torque Range: Approx. 220-230 Nm (approx. 162-170 lb-ft) gross. Fuel System Fuel Delivery: Bosch K-Jetronic (CIS) Continuous Injection System Fuel Type: Unleaded Gasoline (Octane rating as specified by Mercedes-Benz) Ignition System Ignition Type: Electronic Ignition (typically with distributor and ignition coil) Cooling System Cooling Medium: Water/Antifreeze mixture Lubrication System Oil Capacity: Approx. 6.5 - 7.0 Liters (7.0 - 7.4 US Quarts) with filter change. Specific capacity detailed in manual. Engine Codes Engine Family: M110 🔧 Transmission Standard Type: 4-Speed Manual Transmission (optional early in production, replaced by automatics as primary) Optional Type: 4-Speed Automatic Transmission (722.1, 722.3 series) Features Automatic Features: Torque converter lock-up (depending on model year and specific transmission variant) Fluid Specifications Automatic Transmission Fluid: MB-Approval 236.2 (Dexron-II equivalent, e.g., Shell Donax TX or equivalent specified). Manual Transmission Fluid: SAE 80W-90 GL-4 or GL-5 gear oil. 📐 Dimensions Exterior Length: Approx. 4725 mm (186.0 in) Width: Approx. 1790 mm (70.5 in) Height: Approx. 1425 mm (56.1 in) Weights Curb Weight: Approx. 1400-1500 kg (3086-3307 lbs), varies by equipment. Gross Vehicle Weight Rating: Typically around 1900-2000 kg. Wheelbase Wheelbase: Approx. 2795 mm (110.0 in) 🛡️ Safety Features Ratings Crash Safety: Designed to meet safety standards of its era; modern independent crash test data is limited but known for robust build quality. Active Features Braking System: Four-wheel disc brakes (ventilated front discs) with hydraulic assist. Passive Features Construction: Reinforced passenger cell, energy-absorbing steering column, safety glass. Seat Belts: Standard three-point front seat belts, lap belts in rear. 💡 Technology Features Infotainment Original Infotainment: Typically featured an AM/FM radio with cassette player. Higher trims might have power antenna. Driver Assistance Early Features: Cruise control was available as an option on some models. ABS was not standard and less common in early years. Connectivity Original Connectivity: N/A (pre-digital era for automotive connectivity). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 10,000-15,000 km (6,000-9,000 miles) or annually. Refer to specific manual for exact intervals. Air Filter Replacement: Recommended every 20,000-30,000 km (12,000-18,000 miles) or as needed based on conditions. Spark Plug Replacement: Refer to manual; typically around 30,000-40,000 km for conventional plugs. Transmission Fluid Change: Automatic: Every 50,000-80,000 km (30,000-50,000 miles). Manual: Check condition, usually less frequent. Manual specifies intervals. Fluid Specifications Engine Oil Specification: API SG or higher, SAE 15W-40 or 10W-40 recommended. Check manual for specific viscosity based on ambient temperature. Coolant Type: Ethylene glycol based antifreeze with corrosion inhibitors (e.g., Mercedes-Benz Spec 325.0 or equivalent). Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid. Known Issues Common Wear Items: Ball joints, tie rod ends, wheel bearings, fuel distributor seals (K-Jetronic), vacuum lines, and climate control actuators can be common wear items over time. Rust Prone Areas: Wheel arches, sills, door bottoms, and trunk floor are susceptible to rust, especially in certain climates. K Jetronic Issues: Fuel distributor, airflow meter,...