🏷️ Basic Information Identification Make: Mercedes-Benz Models Covered: W107, W123, W124, W126, W129, W140, W201 Codes Chassis Codes Covered: R107, C107, W123, S123, C123, CE123, W124, S124, C124, A124, R129, C140, SEC140, W201 👋 Introduction Market Position Target Audience: Owners and independent workshops specializing in classic Mercedes-Benz vehicles. Competitive Analysis Value Proposition: Provides crucial technical data and repair procedures for a wide range of iconic Mercedes-Benz models from the late 20th century, essential for maintaining their value and performance. Key Features Model Diversity: Uniquely covers a broad spectrum of Mercedes-Benz chassis from a significant era, offering a consolidated resource. Technical Accuracy: Represents factory-level information, ensuring accuracy in maintenance and repair procedures. 📋 Manual Details Coverage Areas Primary Coverage: Maintenance and Repair Secondary Coverage: Troubleshooting, Diagnostics, Specifications Page Count Estimated Page Count: 500-1500 (varies by specific model/year coverage within the range) Manual Type Type: Service Manual / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, fuel injection (KE-Jetronic, CIS-E, etc.), ignition, lubrication, cooling, exhaust, emission control Drivetrain Systems: Manual and automatic transmissions, drive axles, differentials, driveshafts, clutch Chassis Suspension Steering: Front and rear suspension (MacPherson strut, multi-link), steering systems (power steering), wheel bearings Braking Systems: Hydraulic brake systems, ABS (Anti-lock Braking System), brake components (discs, pads, lines, calipers) Electrical Systems: Battery, charging system, starter, lighting, wipers, horn, power accessories, fuses, relays, basic wiring diagrams HVAC Systems: Heating, ventilation, and air conditioning (HVAC) system components and basic troubleshooting Body And Trim: Body panels, doors, glass, interior trim, convertible tops (for applicable models) Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspections/replacement, brake pad inspection Troubleshooting: Diagnostic procedures for common drivability, electrical, and mechanical issues, symptom-based troubleshooting guides Major Repairs: Engine overhaul, transmission rebuild, suspension component replacement, brake system repair, fuel system servicing Adjustments: Valve adjustments (where applicable), idle speed adjustments, timing adjustments Technical Depth Depth: Comprehensive, covering both basic maintenance and in-depth repairs. Includes detailed step-by-step instructions, diagrams, and specifications for professional technicians and experienced DIY enthusiasts. 📊 Manual Specifications File Format Searchability: Searchable text for quick information retrieval Printability: Printable pages for convenience in the workshop Print Quality Image Resolution: High-resolution images and diagrams for clarity Binding Type Digital Binding: N/A (Digital PDF) Paper Type Digital Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Types Covered: Inline-4, Inline-6, V8 petrol engines; Diesel engines (OM615, OM616, OM617, OM601, OM602, OM603) Performance Sample Performance W124 300E: 2.6L M103 I6, approx. 160 hp, 160 lb-ft torque Sample Performance W126 560Sel: 5.6L M117 V8, approx. 238 hp, 317 lb-ft torque Fuel System Fuel Injection Systems: Mechanical Fuel Injection (K-Jetronic, KE-Jetronic), Electronic Fuel Injection (EFI) Fluid Specifications Engine Oil Recommendation General: Refer to manual for specific viscosity grades (e.g., 10W-40, 15W-40 for older diesels, 5W-40 synthetic for later models) and API specifications. Coolant Type: Ethylene glycol-based, typically a 50/50 mix with distilled water. MB-approved coolant required. 🔧 Transmission Standard Transmission Types: 4-speed and 5-speed manual transmissions; 4-speed and 5-speed automatic transmissions (e.g., 722.3, 722.4, 722.5, 722.6) Optional Optional Transmissions: Availability of 5-speed manuals on certain models, LSD (Limited Slip Differential) as an option. Features Automatic Transmission Features: Lock-up torque converter, sport/economy modes (on some models), electronic control (later models). Fluid Specifications Automatic Transmission Fluid General: MB 236.1, 236.3, 236.6, 236.7, 236.10 (refer to specific model for exact type). Manual Transmission Fluid General: GL-4 or GL-5 gear oil, specific viscosity grade (e.g., 75W-90). 📐 Dimensions Exterior Sample Dimensions W124 Sedan: Length: ~4740-4880 mm, Width: ~1740-1790 mm, Height: ~1430-1460 mm Sample Dimensions W126 Coupe: Length: ~4900-5000 mm, Width: ~1790-1800 mm, Height: ~1400-1410 mm Weights Sample Curb Weight W201: Approx. 1200-1350 kg depending on engine and equipment Sample Curb Weight W107 Sl: Approx. 1600-1750 kg depending on engine and equipment 🛡️ Safety Features Ratings General Safety Approach: Mercedes-Benz's focus on structural integrity and passive safety features for its era. Active Features Active Safety Features: ABS (Anti-lock Braking System) on many models, responsive steering, powerful brakes. Passive Features Passive Safety Features: Crumple zones, reinforced passenger cell, safety steering column, padded interior surfaces, seat belts (often with pretensioners on later models). 💡 Technology Features Infotainment Infotainment Systems: Period-appropriate analog and early digital radio systems, cassette players. Optional CD changers on later models. Driver Assistance Driver Assistance Features: Cruise control, ABS, power steering, limited-slip differentials (optional). Connectivity Connectivity Features: None in the modern sense; primarily focused on vehicle mechanics and basic comfort/convenience features. 🔧 Maintenance Service Intervals Oil Change Interval General: Typically 7,500 to 15,000 miles (12,000 to 24,000 km) or 12 months, depending on model, engine, and oil type used. Early models often had shorter intervals. Major Service Interval General: 30,000 to 60,000 miles (48,000 to 96,000 km) for tasks like transmission fluid, differential fluid changes, spark plug replacement, fuel...