🏷️ Basic Information Identification Make: Porsche Model: 928 Generation Generation Identifier: First Generation (all model years covered by manual) Codes Product Code: 77-95 Porsche 928 Repair Service Workshop Manual 👋 Introduction Market Position Vehicle Segment: Luxury Grand Tourer (GT) Original Market Positioning: Priced as a premium performance luxury coupe, competing with top-tier European sports cars and luxury sedans. Aimed at a sophisticated clientele valuing performance, comfort, and advanced engineering. Competitive Analysis Key Competitors Of The Era: Ferrari 400/412, Aston Martin V8 Vantage, BMW 6 Series (E24), Mercedes-Benz SEC coupes, Jaguar XJ-S. Key Features Unique Selling Propositions: Front-engine, rear-transaxle layout for optimal weight distribution; innovative transaxle design; powerful V8 engine; advanced (for its time) safety features; luxurious and comfortable interior; distinctive styling. Manual Benefit Proposition: Empowers owners with the knowledge to perform DIY repairs, saving significant costs on maintenance and repairs. Provides detailed, factory-accurate information for accurate diagnosis and execution of service tasks. 📋 Manual Details Coverage Areas Applicable Model Years: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Engine Variants Covered: All 928 engine variants for the specified years, including initial V8 configurations and later larger displacement V8s (e.g., 4.5L, 4.7L, 5.0L, 5.4L). Page Count Estimated Page Count: Highly comprehensive, likely exceeding 1500 pages based on the extensive model year coverage and detail level expected from a factory service manual. Actual page count not specified but implied to be extensive. Manual Type Manual Type: Factory Service and Repair Workshop Manual Language Language: English Format File Format: PDF / Rar 📖 Manual Coverage Systems Covered Powertrain: Engine (service, repair, diagnostics), Fuel Injection System (Bosch LE2-Jetronic, L-Jetronic variants, CIS), Cooling System, Exhaust System, Transmission (manual and automatic transaxle options), Differential, Axle and Drive components. Chassis And Suspension: Brake System (including ABS on later models), Suspension (front and rear transaxle suspension, alignment), Steering System, Wheels and Tires. Electrical And Electronics: Complete Electrical System Schematics, Lighting, Ignition System, Engine Control System (ECU diagnostics and troubleshooting), Battery, Starting and Charging Systems, Instrumentation, Audio Systems, Climate Control Electronics. Body And Interior: Chassis and Body (construction, repair, panels), Restraint System (airbags and seatbelts), Interior Trim, Seats, Doors, Glass, HVAC (Heater/Air Conditioning) System. Procedures Included Maintenance And Tune Up: General Maintenance, Periodic Lubrication, Oil Changes, Filter Replacements (oil, air, fuel), Spark Plug Replacement, Fluid Level Checks and Top-offs. Diagnostic And Repair: Troubleshooting (systematic fault finding), Component Removal and Installation, Major Engine Overhauls, Transmission Rebuilds, Brake Component Servicing, Electrical System Diagnosis and Repair. Special Procedures: Component specifications, torque values, diagnostic trouble codes (DTCs) if applicable to the era, specialized tool requirements, calibration procedures. Technical Depth Depth Of Coverage: Comprehensive, covering everything from basic maintenance and routine service to in-depth diagnostics and complete mechanical and electrical system overhauls. Suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) and RAR (compressed archive), indicating digital delivery. Adobe Reader compatibility is required. Print Quality Digital Quality Assessment: Expected to be high quality, with clear diagrams, illustrations, and readable text, as is standard for factory service manuals. Searchable text functionality is a common feature of well-produced PDF manuals. Binding Type Delivery Method: Digital Download (PDF/Rar). No physical binding information is applicable. Paper Type Digital Media: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Displacement Range: 4.5L (4477 cc) to 5.4L (5388 cc) Engine Configuration: V8 (90-degree) Engine Code Examples: Z81.00 (4.5L), Z82.00 (4.7L), Z85.00 (5.0L - early US spec), Z86.00 (5.0L - later US spec), Z87.00 (5.4L). Performance Horsepower Range: Approximately 220 hp (early US spec) to over 320 hp (later 5.4L 'S' models). Torque Range: Approximately 260 lb-ft to over 340 lb-ft. Fuel System Fuel Delivery System: Mechanical Fuel Injection (Bosch K-Jetronic / CIS - Continuous Injection System) for most of the production run, later models may have incorporated electronic fuel injection (e.g., Bosch Motronic). Engine Construction Block Material: Aluminum Alloy Cylinder Head Material: Aluminum Alloy 🔧 Transmission Standard Standard Transmission Type: 5-speed Manual Transaxle Optional Optional Transmission Type: 3-speed Automatic Transaxle (e.g., Porsche Automatic Transmission - PAT, or ZF 4HP-22 on later models) Features Transaxle Layout: Rear Transaxle (integrating transmission, differential, and final drive). This contributes to the car's near 50/50 weight distribution. Fluid Specifications Automatic Transmission Fluid: Typically Dexron III or equivalent, though specific Porsche specifications should be consulted. Capacity around 8-10 liters. Manual Transmission Fluid: GL-4 or GL-5 gear oil, viscosity typically 75W-90 or 80W-90. Capacity around 2.5-3 liters. 📐 Dimensions Exterior Length: Approx. 4680 mm (184.3 in) Width: Approx. 1725 mm (67.9 in) Height: Approx. 1280 mm (50.4 in) Weights Curb Weight Range: Approx. 1500 kg to 1700 kg (3300 lbs to 3750 lbs) depending on model year and equipment. Gross Vehicle Weight Rating: Not typically specified in detail as a single number but implied by payload...