🏷️ Basic Information Identification Make: Jaguar Model: S-TYPE 420G Years Covered: 1966, 1967, 1968, 1969, 1970 Codes Model Codes: 420G (often associated with chassis designations like 420) 👋 Introduction Market Position Market Segment: Luxury Saloon Competitive Analysis Key Competitors: Mercedes-Benz S-Class, BMW E3, Rover P5B. Key Features Distinguishing Features: A blend of powerful straight-six engine, refined ride, classic Jaguar styling, and luxury appointments, offering a potent yet comfortable driving experience. Target Audience Intended Users: Professional mechanics, experienced DIY enthusiasts, and owners seeking to maintain or restore their Jaguar S-TYPE 420G. Manual Value Proposition Benefits: Enables users to perform repairs and maintenance like a professional technician, saving money on labor costs and ensuring quality service. 📋 Manual Details Coverage Areas General Coverage: Comprehensive repair and overhaul of Jaguar S-TYPE 420G models from 1966-1970. Specific Coverage: Includes proprietary components manufactured for the S-TYPE 420G and instructions for proprietary components from their respective manufacturers. Page Count Page Count: Not specified, but implied to be a complete workshop manual. Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF (Electronic Delivery) 📖 Manual Coverage Systems Covered Engine: Detailed coverage including disassembly, assembly, repair, and overhaul. Fuel System: Comprehensive procedures for maintenance, diagnosis, and repair. Ignition System: Detailed information for tune-ups, maintenance, and troubleshooting. Lubrication System: Maintenance and repair procedures, including fluid specifications. Exhaust System: Information on maintenance and repair. Electrical System: Extensive coverage of wiring diagrams, component testing, and repair. Body: Procedures for bodywork, trim, and related components. Transmission: Detailed disassembly, assembly, and repair procedures for the transmission. Procedures Included Routine Maintenance: Instructions for regular servicing and tune-ups. Troubleshooting: Diagnostic procedures and corrective actions for common issues. Repair Overhaul: Detailed steps for component repair and complete overhaul. Installation Removal: Procedures for removing and installing various components. Assembly Disassembly: Step-by-step guides for taking apart and reassembling mechanical assemblies. Technical Depth Depth: Assumes familiarity with general automotive practices, emphasizing special aspects of the Jaguar S-TYPE 420G. Covers everything from basic tune-ups to complete engine and transmission rebuilds. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Printable Binding Type Binding Type: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, DOHC (Dual Overhead Camshaft) Displacement: 4.2 Liters (4235 cc) Bore X Stroke: 92.07 mm x 106.2 mm Compression Ratio: 8.5:1 (typical, may vary) Horsepower: Approx. 245 hp (183 kW) at 5500 rpm Torque: Approx. 283 lb-ft (384 Nm) at 3000 rpm Fuel System Carburetion: Twin SU HD8 Carburetors Fuel Type: Premium Unleaded Gasoline Lubrication Oil Capacity: 7.7 Liters (8.1 US Quarts) including filter (approx.) Cooling System Coolant Capacity: Approx. 10.5 Liters (11.1 US Quarts) (approx.) 🔧 Transmission Standard Transmission Type: 3-speed Automatic (Borg-Warner DG250 or similar) Optional Optional Transmission: 4-speed Manual with Overdrive (less common than automatic) Features Transmission Fluid Type: Dexron III/Mercon (or equivalent specification for original fluid type) 📐 Dimensions Exterior Length: Approx. 16 ft 6 in (5029 mm) Width: Approx. 5 ft 7 in (1702 mm) Height: Approx. 4 ft 7 in (1403 mm) Weights Curb Weight: Approx. 3,600 - 3,800 lbs (1633 - 1724 kg) Wheelbase Wheelbase: Approx. 9 ft 5 in (2870 mm) Wheels Wheel Size: 15 inch (standard) Bolt Pattern: 5 x 4.5 inch (5 x 114.3 mm) Tires Front Tire Size: 6.40 x 15 or 6.70 x 15 (bias-ply original) / 205/70R15 (radial equivalent) Rear Tire Size: 6.40 x 15 or 6.70 x 15 (bias-ply original) / 205/70R15 (radial equivalent) 🛡️ Safety Features Ratings Safety Ratings: N/A (Vehicle manufactured prior to modern standardized crash testing protocols) Active Features Braking System: Front Disc Brakes, Rear Drum Brakes Steering System: Power-assisted Rack and Pinion Passive Features Seat Belts: Lap belts typically standard, shoulder belts may be optional or retrofitted. 💡 Technology Features Infotainment Infotainment System: Original radio (AM/FM), often with manual tuning and basic speaker setup. Driver Assistance Driver Assistance Features: None (vehicle predates modern driver assistance systems) Comfort Features Climate Control: Optional air conditioning, Heater with ventilation. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles or 6 months (refer to manual for exact specification for the era). Tune Up Interval: Recommended annually or every 10,000-15,000 miles. Fluid Specifications Engine Oil Viscosity: 20W-50 or 10W-30 (API SF or higher, consult manual for precise recommendation) Coolant Type: Ethylene Glycol based antifreeze mixed with distilled water (50/50 ratio) Brake Fluid Type: DOT 3 or DOT 4 Known Issues Common Issues: Rust and corrosion (especially sills, wheel arches, and boot floor), Lucas electrical components (prone to failure), cooling system leaks, carburetor tuning, potential for oil leaks from engine and gearbox seals. Parts Recommendations Filter Part Numbers: Oil Filter: Fram PH8A, Wix 51515 (examples, confirm compatibility) 📚 Vehicle History Brand Heritage Heritage Summary: Jaguar Cars is renowned for its sporty, luxurious, and performance-oriented vehicles with a...