🏷️ Basic Information Identification Make: Mercedes-Benz Model: R107 SL-Class / C107 SLC-Class Year: 1975 Generation Platform: R107 (Coupe C107) Codes Chassis Codes: R107 (Roadster), C107 (Coupe) 👋 Introduction Market Position Target Audience: Mercedes-Benz R107/C107 SL-Class owners, enthusiasts, and independent repair shops Competitive Analysis Advantage: Vehicle-specific, factory-level detail; comprehensive coverage; digital format offers flexibility and durability compared to traditional paper manuals Key Features Usability: Easy-to-use PDF, printable pages, zoomable images, searchable text (implied for PDF) 📋 Manual Details Coverage Areas Scope: All models and all repairs A-Z for the 1975 R107/C107 SL-Class Page Count Estimated Pages: Extensive (specific count not provided, but described as comprehensive and all-inclusive) Manual Type Type: Service and Repair Manual (Factory Issued) Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Powertrains: Engine, Fuel Service Specifications, Emission Control, Intake/Exhaust/Cooling, Lube, Ignition, Starting/Charging, Auto Transmission/Clutch, Manual Transmission, Transfer/Propeller Shaft, Drive Shaft, Differential, Axle/Suspension Chassis And Body: Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering, Windshield/Glass/Mirror, Engine Hood/Door, Exterior & Interior Electrical And Accessories: Electrical System, Meter/Audio/Visual, Horn, Air Conditioning, Supplemental Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Instrument Panel Procedures Included Repair And Diagnostics: Complete step-by-step instructions, diagnosis, maintenance, service, repair, troubleshooting Documentation: Diagrams, illustrations, wiring schematics, specifications Technical Depth Level: Factory High-Detail; Equivalent to Dealership Technician Manuals 📊 Manual Specifications File Format Compatibility: Windows (Vista 32/64, XP, ME, 98, NT, 2000), Mac OS Print Quality Printability: Fully printable; sections or entire manual can be printed Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF, print on demand) ⚙️ Engine Specifications Primary Engine Engine Options 1975: Likely to cover the 3.5L M116 V8 (e.g., 350 SL) and potentially the 4.5L M117 V8 (e.g., 450 SL) depending on specific market availability for 1975 models. Performance Horsepower Torque Estimates: 350 SL (M116): Approx. 197-200 hp (SAE Gross), 211-215 lb-ft torque. 450 SL (M117): Approx. 225-230 hp (SAE Gross), 270-275 lb-ft torque. (Specific figures vary by market and emissions regulations). Fuel System Fuel Delivery: Bosch D-Jetronic (Injection) for V8 engines. Likely includes fuel pump, injector, and pressure regulator diagnostics and repair. 🔧 Transmission Standard Transmission Type: Typically 3-speed automatic (e.g., 3HP20) was standard on most 1975 R107/C107 models. Manual transmissions were less common, especially in North America. Optional Manual Transmission Availability: A 4-speed manual transmission might have been available in certain markets or as a specific option. Manual transmission service, clutch replacement, and related components would be covered if applicable. Features Transmission Fluid: Manuals will specify approved ATF (Automatic Transmission Fluid) and gear oil specifications. For 3HP20, typically Dexron II or equivalent. 📐 Dimensions Exterior Wheelbase: 2460 mm (96.9 inches) Length: 4405-4415 mm (173.4-173.8 inches) Width: 1780 mm (70.1 inches) Height: 1290-1300 mm (50.8-51.2 inches) Weights Curb Weight: Approximately 1500-1600 kg (3300-3520 lbs), depending on engine and options. 🛡️ Safety Features Ratings Crash Testing Era: While formal crash ratings as we know them today were not prevalent, the R107 was designed with a robust structure, including a reinforced A-pillar and a strong windshield frame. Active Features Braking System: Four-wheel disc brakes with power assistance. Early models might have had less sophisticated ABS or were without it. Manual will detail brake system maintenance, fluid specifications (e.g., DOT 3/4), and component replacement. Passive Features Seat Belts: Standard 3-point inertia reel seat belts, likely with shoulder belt anchors. Manual will cover adjustment, replacement, and function. 💡 Technology Features Infotainment Audio System: Early models featured basic AM/FM radio, possibly with an 8-track player or cassette. Manual will cover removal, installation, and speaker service. Driver Assistance Cruise Control: Optional cruise control systems were available and are covered in the manual for diagnosis and repair. Connectivity Wiring Schematics: Comprehensive wiring diagrams for all electrical systems, crucial for diagnosing and repairing issues in a car of this era. 🔧 Maintenance Service Intervals Oil Change Schedule: Typically every 5,000-7,500 miles or 6-12 months, depending on driving conditions. Manual will have specific recommendations. Tune Up Schedule: Spark plugs, distributor cap, rotor, and ignition points (if applicable) would be part of a tune-up, likely every 15,000-20,000 miles. Manual will provide exact intervals. Fluid Specifications Engine Oil: Likely 10W-40 or 20W-50, depending on ambient temperature. Manual will specify exact Mercedes-Benz approved grades and API service classifications. Coolant: Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Manual will specify Mercedes-Benz approved coolant type. Known Issues Common Wear Items: Fuel system components (injectors, pumps), vacuum lines, suspension bushings, exhaust system, and electrical contacts are common areas requiring attention on older vehicles like the R107. 📚 Vehicle History Brand Heritage Mercedes Benz Legacy: Mercedes-Benz has a long history of producing luxurious and technically advanced grand tourers and sports cars. The SL (Sport Leicht) lineage is iconic. Model Evolution R107 Development: The R107 replaced the W113 'Pagoda'...