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1979 Mercedes R107 & C107 SL-Class Service and Repair Manual
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🏷️ Basic Information Identification Make: Mercedes-Benz Model: R107 / C107 SL-Class Model Variant: SL-Class (Roadster/Coupe) Product Type: Service and Repair Manual Product Identifier: 1979 Mercedes R107 & C107 SL-Class Service...
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🏷️ Basic Information
Identification
Make:
Mercedes-Benz
Model:
R107 / C107 SL-Class
Model Variant:
SL-Class (Roadster/Coupe)
Product Type:
Service and Repair Manual
Product Identifier:
1979 Mercedes R107 & C107 SL-Class Service and Repair Manual
Codes
Chassis Code:
R107 (Roadster), C107 (Coupe)
👋 Introduction
Market Position
Target Audience:
Mercedes-Benz R107/C107 owners, enthusiasts, independent repair shops, and DIY mechanics seeking authoritative repair guidance.
Competitive Analysis
Value Proposition:
Provides factory-level, comprehensive repair information, empowering users to perform maintenance and repairs themselves, saving time and money compared to dealership service.
Key Features
Authenticity:
Directly comparable to manuals used by dealership technicians, ensuring accuracy and completeness.
Digital Convenience:
Single PDF format eliminates the need for multiple physical books, allows for easy searching, printing, and digital storage, preventing damage to physical manuals.
📋 Manual Details
Coverage Areas
Primary Coverage:
All R107 and C107 SL-Class models for the 1979 model year.
Secondary Coverage:
This manual likely covers a broader range of R107/C107 production years due to commonality in components and systems, though the primary focus is 1979.
Page Count
Estimated Page Count:
Indeterminate (Digital PDF, expandable content)
Manual Type
Type:
Factory Authorized Service and Repair Manual
Language
Language:
English
Format
Format:
Digital PDF
Compatibility:
Windows (Vista 32/64, XP, ME, 98, NT, 2000), Mac
Requirements:
Adobe PDF Reader, Winzip (or equivalent decompression software)
📖 Manual Coverage
Systems Covered
Engine:
Detailed coverage including maintenance, diagnosis, and repair of all engine variants.
Control System:
Engine control systems, ignition, fuel injection (likely Bosch K-Jetronic for this era).
Mechanical:
Comprehensive mechanical systems covering engine, transmission, suspension, etc.
Fuel System:
Fuel delivery, injection systems, fuel tank, lines, and related components.
Emission Control:
Emission control systems specific to the 1979 model year and relevant markets.
Cooling System:
Radiator, coolant, water pump, thermostat, hoses, and fan assembly.
Lubrication:
Engine oil, filter, lubrication system components and procedures.
Ignition Starting Charging:
Battery, alternator, starter motor, ignition system components (distributor, coils, spark plugs).
Transmission Auto:
Automatic transmission service, maintenance, diagnosis, and repair (e.g., 3-speed or 4-speed automatic).
Transmission Manual:
Manual transmission service, maintenance, diagnosis, and repair (if applicable).
Drivetrain:
Driveshaft, U-joints, differential, rear axle assembly.
Suspension:
Front and rear suspension systems, shock absorbers, springs, control arms, bushings.
Wheel Tire:
Wheel alignment, tire specifications, mounting, and balancing.
Brake Control:
Brake system hydraulics, master cylinder, brake booster, ABS (if applicable for the era).
Brake Service:
Brake pad/shoe replacement, caliper/wheel cylinder service, rotor/drum machining or replacement, brake fluid.
Parking Brake:
Parking brake system operation, adjustment, and repair.
Steering Column:
Steering column assembly, ignition switch, and related components.
Power Steering:
Power steering system components, pump, rack/gearbox, fluid, and hydraulic lines.
Climate Control:
Air conditioning system diagnosis and repair, heating system, climate controls.
Restraint System:
Supplemental Restraint System (Airbag - if applicable), Seat Belt systems.
Seatbelts:
Seat belt operation, maintenance, and replacement.
Immobilizer:
Engine Immobilizer systems (if factory fitted).
Cruise Control:
Cruise control system diagnosis and repair.
Wipers Washers:
Wiper and washer system components, motors, linkages, and fluid reservoir.
Door Locks:
Door lock mechanisms, central locking systems, key operation.
Meters Audio Visual:
Instrument cluster, gauges, radio/audio system, speaker installation.
Horn:
Horn system components and operation.
Glass Mirror:
Windshield, side glass, rear glass, mirror assembly replacement and adjustment.
Instrument Panel:
Instrument panel removal, installation, and component access.
Seats:
Seat adjustment mechanisms, upholstery, and removal.
Body Exterior:
Hood, doors, trunk lid, bumpers, body panels, exterior trim.
Body Interior:
Interior trim panels, headliner, carpeting, dashboard.
Electrical:
Complete electrical system coverage, including wiring harnesses, switches, relays, and lighting.
Multiplex Can Comm:
Likely limited coverage for 'Multiplex/CAN Communication' given the 1979 model year, but may cover early forms of networked systems or control units if present.
Procedures Included
Maintenance Procedures:
Routine maintenance, fluid changes, filter replacements, lubrication.
Diagnostic Procedures:
Step-by-step diagnostic procedures for identifying and resolving faults across all systems.
Repair Procedures:
Detailed, vehicle-specific repair instructions for all major and minor components.
Troubleshooting Guides:
Troubleshooting flowcharts and guides for common and complex issues.
Rebuild Procedures:
Comprehensive rebuild procedures for major assemblies like engines, transmissions, and differentials.
Installation Procedures:
Instructions for installing new or replacement parts and accessories.
Technical Depth
Depth:
Factory-level, comprehensive, covering all aspects from basic maintenance to full engine and transmission rebuilds.
Specificity:
Vehicle-specific, not generic. Direct factory information for the R107/C107 platform.
Illustrations:
Includes diagrams, illustrations, and detailed technical drawings.
Schematics:
Features complete wiring schematics for electrical systems.
📊 Manual Specifications
File Format
Format:
PDF
Searchable:
Likely searchable text within the PDF for efficient information retrieval.
Print Quality
Printability:
All pages are printable, allowing users to print specific sections or the entire manual.
Image Scaling:
Images and diagrams can be blown up and printed at enlarged sizes for better detail.
Binding Type
Binding:
N/A (Digital PDF format, no physical binding)
Paper Type
Paper Type:
N/A (Digital PDF format, no physical paper)
Download
Download Speed:
Fast download
⚙️ Engine Specifications
Primary Engine
Engine Options:
The 1979 R107/C107 models would primarily feature M110 (2.8L Inline-6) and M116/M117 (3.5L, 3.8L, 4.5L V8) engines depending on market and specific model designation (e.g., 350 SL, 450 SL, 380 SL).
Performance
Horsepower Torque:
Specifications vary by engine and market. For example, a 1979 450 SL (M117) typically produced around 180-190 hp and 230-240 lb-ft of torque.
Fuel System
Injection System:
Bosch K-Jetronic (CIS) mechanical fuel injection system is highly probable for these engine variants.
🔧 Transmission
Standard
Standard Transmission:
Automatic transmission (typically 3-speed or 4-speed, depending on engine and model) was common, often the standard offering.
Optional
Optional Transmission:
A 4-speed manual transmission might have been available as an option on certain models, though less common than automatic.
Features
Transmission Fluid:
Requires specific Automatic Transmission Fluid (ATF), typically a Dexron-II or equivalent. Specific Mercedes-Benz specification is crucial and would be detailed in the manual.
📐 Dimensions
Exterior
Wheelbase:
Approximately 96.7 inches (2455 mm).
Length:
Varies by model, but around 177 inches (4495 mm) for the Roadster.
Weights
Curb Weight:
Varies significantly by engine and options, but generally in the range of 3,500 - 3,800 lbs (1588 - 1724 kg).
🛡️ Safety Features
Ratings
Crash Testing:
While official NCAP ratings as we know them today were not prevalent for 1979 vehicles, Mercedes-Benz had a strong reputation for safety engineering in this era.
Active Features
Active Safety:
Four-wheel disc brakes, power steering, robust chassis construction.
Passive Features
Passive Safety:
Strong safety cell, padded interior surfaces, collapsible steering column, seat belts (likely 3-point front).
💡 Technology Features
Infotainment
Audio System:
Factory-fitted analog radio, potentially with cassette player. Aftermarket upgrades are common.
Driver Assistance
Driver Assistance:
Limited by modern standards. Primary assistance would be power steering and the robust braking system.
Connectivity
Connectivity:
N/A (No contemporary connectivity features like Bluetooth or USB).
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000-5,000 miles or 6-12 months, depending on driving conditions and oil type. Manual will provide precise recommendations.
Major Service Intervals:
Major services (e.g., valve adjustments, timing belt inspection/replacement for M110) would occur at intervals like 30,000, 60,000 miles, detailed in the manual.
Fluid Specifications
Engine Oil:
Likely a 20W-50 or 10W-40, API SF or SG service category. Specific viscosity and MB approval required.
Coolant:
Ethylene glycol based antifreeze. 50/50 mix with distilled water. Mercedes-Benz spec is critical.
Brake Fluid:
DOT 3 or DOT 4 brake fluid. Regular flushing is recommended.
Known Issues
Common Issues:
Potential for rust in common areas (wheel wells, rocker panels, door bottoms), vacuum leaks, aging rubber components (hoses, bushings), and issues with K-Jetronic fuel systems if not properly maintained.
📚 Vehicle History
Brand Heritage
Heritage:
Mercedes-Benz has a long-standing reputation for engineering excellence, luxury, and safety, established well before the R107's introduction.
Model Evolution
R107 C107 Introduction:
The R107 roadster replaced the W113 'Pagoda' SL, and the C107 coupe (SLC) was introduced later. The R107 platform was produced for a remarkable 18 years (1971-1989).
Production
Production Period:
R107/C107 production ran from 1971 to 1989. The 1979 model year falls within the core production years.
🏆 Awards & Recognition
Recognitions
Vehicle Awards:
While specific 'awards' for a single model year are rare, the R107 SL-Class is widely recognized as a highly desirable, reliable, and timeless classic car, often featured in automotive publications for its enduring appeal and engineering.