🏷️ Basic Information Identification Make: Mercedes-Benz Model: SL-Class Chassis Codes: R107, C107 Model Years Covered: 1988 Codes Engine Codes Likely Covered: M103 (3.0L Inline-6), M117 (5.0L V8) - Specific to 1988 models 👋 Introduction Market Position Positioning: Essential resource for Mercedes-Benz R107/C107 owners and independent repair shops seeking accurate, factory-level information. Competitive Analysis Uniqueness: Provides specific, non-generic data identical to dealership technician manuals, distinguishing it from generic aftermarket guides. Key Features Content Highlight: Complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications for comprehensive repair. User Experience: Easy-to-use PDF format, allowing selective printing of pages and diagrams, eliminating the need for physical book navigation and wear. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Scope: All Models & All Repairs A-Z Page Count Estimated Page Count: Not Specified (Implied comprehensive, likely 1000+ pages based on scope) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF (Digital) 📖 Manual Coverage Systems Covered Powertrain: Engine (Maintenance, Diagnostics, Repair), Fuel System, Cooling System, Lubrication System, Ignition System, Starting System, Charging System, Automatic Transmission, Manual Transmission, Clutch, Transfer Case (if applicable), Drive Shaft, Differential, Axles Chassis: Suspension (Front & Rear), Steering Column, Power Steering, Brakes (Hydraulic System, Parking Brake), Wheels & Tires Electrical Electronics: Wiring Schematics, Lighting, Instruments, Gauges, Audio/Visual Systems, Horn, Windshield Wipers & Washers, Power Accessories (Windows, Locks), Cruise Control, Air Conditioning, Supplemental Restraint System (SRS), Engine Immobilizer (if applicable), Multiplex/CAN Communication (early forms) Body Interior: Body Panels, Doors, Hood, Exterior Trim, Interior Trim, Seats, Glass & Mirrors, Instrument Panel Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes (Oil, Coolant, Brake Fluid, Transmission Fluid), Filter Replacements, Inspections, Lubrication Repair Diagnostics: Step-by-step repair procedures, Diagnostic trouble codes (DTCs) and troubleshooting flowcharts, Component testing, Reassembly instructions, Specifc repair techniques Technical Depth Depth: Vehicle Specific, Dealer Level Technician Information, Complete Rebuilds, Advanced Diagnostics, System Overhauls 📊 Manual Specifications File Format Format: PDF Compatibility: Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac OS Requirements: Adobe PDF Reader, Winzip (free) Print Quality Printability: Fully Printable, High Resolution Images, Scalable Diagrams Binding Type Binding: Not Applicable (Digital PDF) Paper Type Paper Type: Not Applicable (Digital PDF) ⚙️ Engine Specifications Primary Engine 1988 Engine Code: M103 Configuration: 3.0 Liter SOHC Inline-6 Fuel System: Bosch KE-Jetronic Fuel Injection Performance M103 Horsepower Approx: 188 hp @ 5700 rpm Torque Approx: 205 lb-ft @ 4400 rpm Optional Engine 1988 Engine Code: M117 Configuration: 5.0 Liter SOHC V8 Fuel System: Bosch K-Jetronic Fuel Injection Performance M117 Horsepower Approx: 228 hp @ 4750 rpm Torque Approx: 295 lb-ft @ 3250 rpm 🔧 Transmission Standard Transmission Type: 4-Speed Automatic (e.g., 722.3) Optional Transmission Type: 5-Speed Manual (Less Common, particularly in US market for 1988) Features Torque Converter Lockup: Yes (for automatic transmission, improving fuel economy) 📐 Dimensions Exterior R107 Length: Approx. 179.1 in (4550 mm) Width: Approx. 69.4 in (1763 mm) Height: Approx. 51.2 in (1300 mm) Weights R107 Curb Weight Approx: 3500 - 3800 lbs (1588 - 1724 kg) depending on engine and options Interior R107 Seating Capacity: 2+2 (front bucket seats, small rear seats) 🛡️ Safety Features Ratings Crash Test Data Availability: Limited specific data for 1988, but generally considered robust for its era. Manual covers safety systems. Active Features Brakes: Four-wheel Anti-lock Braking System (ABS), Power-assisted discs Passive Features Restraints: Seat belts (3-point front), Supplemental Restraint System (SRS) - driver airbag likely standard for 1988 Body Structure: Reinforced chassis and A-pillars for rollovers (especially with hardtop) 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM radio with cassette player, often with power antenna. Manual covers basic operation and troubleshooting. Driver Assistance ABS: Anti-lock Braking System (ABS) standard on many models for 1988. Connectivity Vehicle Communication: Early forms of multiplex wiring for some systems may be present; manual provides detailed wiring schematics for diagnosis. 🔧 Maintenance Service Intervals Oil Change: Typically every 3,000-5,000 miles or annually (refer to manual for exact specification for 1988) Transmission Fluid Change: Recommended every 30,000-50,000 miles for automatic transmissions (refer to manual for specific type and interval) Fluid Specifications Engine Oil M103: API SG or higher, viscosity typically 15W-40 or 20W-50 depending on climate (manual will specify exact MB approval) Engine Oil M117: API SG or higher, viscosity typically 15W-40 or 20W-50 depending on climate (manual will specify exact MB approval) Coolant: MB-approved Antifreeze/Coolant, typically a 50/50 mix with distilled water Brake Fluid: DOT 3 or DOT 4, depending on original specification (manual will confirm) Power Steering Fluid: MB-approved hydraulic fluid (e.g., CHF 11S or equivalent, manual will specify) Known Issues Common Wear Items: Fuel injection system components (EHA valve, fuel distributors), wiring harness degradation, climate control systems, vacuum leaks, suspension bushings, exhaust system corrosion. Typical Checks: Regular inspection of rubber hoses and seals, battery terminal condition, brake system functionality, and dashboard warning lights. 📚 Vehicle History Brand Heritage Mercedes...