🏷️ Basic Information Identification Make: Mercedes-Benz Model: R107 SL-Class / C107 SLC-Class Model Years Covered: 1978 Codes Chassis Codes: R107, C107 👋 Introduction Market Position Value Proposition: Provides essential, dealership-grade technical information for owners and independent mechanics, enabling accurate maintenance, diagnosis, and repair of the 1978 R107/C107 SL-Class. Competitive Analysis Uniqueness: This is not generic information; it is vehicle-specific factory data, identical to what professional technicians use, covering all repairs A-Z for the 1978 models. Key Features Digital Benefits: Searchable PDF, printable pages, easy navigation, ability to zoom into diagrams, no physical wear and tear on original documents. 📋 Manual Details Coverage Areas Service And Repair: Comprehensive A-Z Page Count Estimated Pages: Varies by specific model/engine combination within 1978, but comprehensive factory manuals typically exceed 500 pages. The PDF format allows for variable page count based on printing needs. Manual Type Type: Factory Service and Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, overhaul, timing, fuel delivery, emission control systems (e.g., D-Jetronic injection for applicable engines). Transmission: Automatic and Manual transmission service, repair, adjustment, and fluid specifications. Brakes: Hydraulic system, calipers, master cylinder, vacuum booster, parking brake, ABS (if equipped for the model year). Suspension And Steering: Front and rear suspension components, shock absorbers, springs, control arms, power steering system, steering gear, wheel alignment specifications. Electrical System: Wiring schematics, battery, charging system (alternator, regulator), starting system, lighting, gauges, instruments, power windows, central locking, cruise control. Body And Chassis: Body panel repair, door mechanisms, hood, trunk, convertible top operation (if applicable), glass, mirrors, interior trim, seats. Climate Control: Air conditioning system service, refrigerant handling, heater core, blower motor, climate control panel diagnostics. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug checks, belt adjustments, fluid level checks and top-offs, lubrication points. Troubleshooting: Diagnostic procedures for common and uncommon faults across all systems, symptom-based troubleshooting guides. Component Overhaul: Detailed step-by-step instructions for rebuilding engines, transmissions, brake calipers, steering gears, etc. Diagnostics: Testing procedures for electrical components, fuel system pressure testing, ignition timing adjustments. Technical Depth Depth: Factory-level, covering everything from basic fluid checks to complete engine and transmission rebuilds, including intricate electrical diagnostics and wiring schematics. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) Print Quality Printability: High-resolution, printable pages with clear diagrams and text. Ability to enlarge images for detailed inspection. Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format - User prints on desired paper) ⚙️ Engine Specifications Primary Engine Options 1978 Engine Code 1: M110 (2.8L Inline-6, DOHC) - Primarily for C107 280SLC, and some R107 280SL in certain markets. Engine Code 2: M117 (3.5L V8, SOHC) - Commonly found in R107 350SL. Engine Code 3: M116 (4.5L V8, SOHC) - Found in R107 450SL and 450SLC. Performance General Power Delivery: Smooth, torquey delivery characteristic of Mercedes-Benz engineering of the era. Precise specifications (HP/Torque) would be engine-specific and found within the manual. Fuel System Fuel Injection Type: Bosch D-Jetronic (Electronic Fuel Injection) for most models, or mechanical fuel injection systems for some carbureted variants in specific markets. Carburetor specifications would also be covered if applicable. Maintenance Schedule Oil Change Interval: Typically every 7,500 miles or 12,000 km, or annually, whichever comes first. Specific oil type and viscosity (e.g., API SG or higher, SAE 20W-50 or 10W-40 depending on climate) detailed in manual. Fluid Specifications Coolant Type: Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Specific Mercedes-Benz approved coolant types would be listed. Engine Oil Capacity: Varies by engine: ~6.5-7.5 liters for M117/M116 V8s, ~7.0 liters for M110 Inline-6. Exact capacities are in the manual. 🔧 Transmission Standard Transmission Type: Automatic Transmission (e.g., 3-speed or 4-speed automatic) was standard on most models, especially V8 variants. Manual transmissions were less common but available on some 6-cylinder models. Optional Transmission Type: 4-speed Manual Transmission (often available as an option on 6-cylinder models). Features Automatic Features: Torque converter, hydraulic control, gear selection linkage. Fluid Specifications Automatic Transmission Fluid: Type A, Type A Suffix A, or Dexron II specified for the automatic transmissions of this era. Manual transmission fluid specifications also detailed. 📐 Dimensions Exterior Body Styles: 2-door Convertible (R107 SL), 2-door Coupe (C107 SLC). Weights Curb Weight: Approximately 3,500 - 3,900 lbs (1588 - 1769 kg) depending on engine and options. Specific weights for each model variant are in the manual. 🛡️ Safety Features Ratings Historical Safety: The R107/C107 chassis was known for its robust construction and safety features for its era, including crumple zones and a strong safety cell. Modern safety rating equivalents are not directly applicable but it performed well for its time. Active Features Braking System: Four-wheel disc brakes, power-assisted with vacuum booster. Anti-lock Braking System (ABS) was introduced later in the R107's life cycle, so its presence in...