🏷️ Basic Information Identification Make: Mazda Model: RX-7 Model Variant: FD3S Year: 1993 Codes Transmission Code: R15M-D 👋 Introduction Market Position Target Audience: Enthusiasts, independent repair shops, and DIY mechanics specializing in Mazda RX-7 performance and maintenance. Competitive Analysis Value Proposition: Provides in-depth technical guidance for the often-complex R15M-D transmission, crucial for maintaining the performance of the iconic RX-7. Key Features Focus On R15M-D: Specific and comprehensive coverage of the R15M-D 5-speed manual transmission, known for its robustness but requiring specific service knowledge. Diagnostic Accuracy: Aids in accurate diagnosis of issues specific to this rotary-engine-paired gearbox. 📋 Manual Details Coverage Areas Transmission Systems: R15M-D gearbox Model Years Covered: 1993 onwards Page Count Estimated Page Count: Varies (typical workshop manuals range from 300-800 pages for comprehensive coverage) Manual Type Manual Type: Workshop Repair Manual Language Language: English (assumed for primary market sales) Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Transmission Diagnostics: Detailed troubleshooting procedures for common transmission faults, including shifting issues, noise, and fluid leaks. Transmission Disassembly Assembly: Step-by-step instructions for the complete dismantling and reassembly of the R15M-D gearbox, including component identification. Clutch System Integration: Coverage of the clutch release mechanism, slave cylinder, and concentric slave cylinder (if applicable to the model year) as it relates to transmission servicing. Driveshaft And Axles: Procedures for removing, inspecting, and refitting driveshafts and CV joints connected to the transmission. Procedures Included Routine Maintenance: Guidance on transmission fluid checks, level adjustments, and recommended fluid types and capacities. Component Replacement: Instructions for replacing wear items such as seals, bearings, synchros, and gear sets. Special Tool Requirements: Identification and usage instructions for specialized tools required for transmission overhaul. Torque Specifications: Precise torque values for all fasteners related to transmission assembly and mounting. Technical Depth Depth Of Coverage: Comprehensive rebuild procedures, diagnostic charts, and detailed technical specifications for the R15M-D transmission. Diagnostic Charts: Flowcharts and symptom-based troubleshooting guides to pinpoint transmission issues. Component Measurements: Specifications for measuring critical internal components such as gear backlash and bearing preloads. 📊 Manual Specifications File Format File Format Details: High-resolution PDF with searchable text for easy navigation and printing. Print Quality Print Quality: Optimized for clear reproduction of diagrams, schematics, and technical illustrations. Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Rotary (13B-REW Twin-Turbo) Performance Displacement: 1.3L (654cc x 2 rotors) Horsepower Approx: 255-280 hp (depending on market and specific model year updates) Torque Approx: 217-231 lb-ft Fuel System Fuel Injection: Sequential Electronic Fuel Injection (SEFI) 🔧 Transmission Standard Transmission Type: 5-speed Manual Transmission Model: R15M-D Optional Optional Transmission: 4-speed Automatic (less common and not covered by this specific manual) Features Gear Ratios Typical: 1st: 3.333, 2nd: 2.151, 3rd: 1.483, 4th: 1.094, 5th: 0.844 (Note: Ratios may vary slightly by market/year) Final Drive Ratio: 4.300 (common for R15M-D, can vary) Transmission Fluid Type: GL-4 (preferred) or GL-5 synthetic gear oil, 75W-90 viscosity often recommended. 📐 Dimensions Exterior Length: Approx. 4275 mm Width: Approx. 1750 mm Height: Approx. 1230 mm Weights Curb Weight: Approx. 1300-1350 kg 🛡️ Safety Features Ratings Passive Safety Features: Front airbags, crumple zones, side-impact door beams, seatbelt pre-tensioners. Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional (Mazda's Traction Control System - TCS) 💡 Technology Features Infotainment Infotainment System: Basic audio systems common for the era, with cassette or CD players. Factory unit integration may be limited. Driver Assistance Driver Assistance Features: Limited by modern standards; primarily focused on ABS and optional TCS. Connectivity Connectivity Options: None in the modern sense; typically reliant on aftermarket solutions for Bluetooth or auxiliary inputs. 🔧 Maintenance Service Intervals Transmission Fluid Change: Recommended every 30,000-50,000 miles or 2-3 years, subject to driving conditions. Refer to manual for exact schedule. Fluid Specifications Transmission Fluid Capacity: Approx. 2.2-2.5 Liters (check manual for exact capacity and fill procedure) Transmission Fluid Viscosity: 75W-90 GL-4 or GL-5 Known Issues Common Transmission Wear Items: Synchro rings, input shaft bearings, output shaft bearings, and clutch release bearing are common wear components. Shifter Bushings: Wear in shifter bushings can lead to a sloppy shifter feel, addressed by replacement. Clutch Actuation: Issues with clutch master/slave cylinders or concentric slave cylinder can affect clutch engagement, requiring diagnosis and potential replacement. 📚 Vehicle History Brand Heritage Mazda Rotary Legacy: Mazda's long and distinguished history with the rotary engine, originating with the NSU license and perfected over decades. Model Evolution Rx-7 Generations: The FD3S represents the third and final generation of the RX-7, introduced in 1991 (for the 1992 model year) and produced until 2002. Fd3S Design Philosophy: Focus on lightweight construction, aerodynamic efficiency, and a balanced chassis with a front-mid engine layout. Production Production Period: 1991-2002 🏆 Awards & Recognition Recognitions Car And Driver 10Best: The FD generation RX-7 was named to Car and Driver's 10Best...