🏷️ Basic Information Identification Make: Jaguar Model: XK120 Model Variant: Roadster, Fixed Head Coupe, Drophead Coupe Production Years Covered: 1948-1954 Codes Engine Code: XK (3.4L) 👋 Introduction Market Position Target Audience: Owners with basic mechanical skills and independent auto service professionals. Also valuable for owners wanting to better understand their vehicle and communicate with technicians. Competitive Analysis Value Proposition: Provides dealership-level service and repair information at a fraction of the cost of official service. Enables significant savings on routine maintenance and repairs. Key Features Content Quality: Accurate, clear, and concise text with step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications. Vehicle-specific, not generic. Manufacturer Provided: Written by the manufacturers, offering authentic information. 📋 Manual Details Coverage Areas Systems: General Information, Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Clutch System, Manual Transaxle, Automatic Transaxle, Driveshaft & Axle, Suspension System, Steering System, Restraint System, Brake System, Body (Interior & Exterior), Body Electrical System, Heating, Ventilation, Air Conditioning (HVAC) Page Count Estimated Page Count: Extensive (Specific count not provided, but implied to be comprehensive) Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed coverage of engine disassembly, assembly, timing, valve adjustments, cylinder head service, piston and connecting rod installation, crankshaft and bearing service, oil pump operation, and cooling system maintenance. Engine Electrical: Comprehensive diagrams and procedures for ignition system, starting system, charging system (generator), lighting circuits, and instrumentation. Fuel System: Detailed instructions on carburettor (SU HD6 likely) overhaul and adjustment, fuel pump service, fuel lines, and fuel tank maintenance. Transmission: Covers both manual (Moss 4-speed synchromesh) and optional automatic (Fluidrive) transmissions, including removal, disassembly, inspection, repair, and reinstallation. Suspension And Steering: Detailed procedures for front and rear suspension components, including kingpins, bushes, shock absorbers (Girling lever-arm), steering box overhaul, and alignment. Brake System: In-depth coverage of hydraulic brake system, including master cylinder, wheel cylinders, brake shoes, drums/discs (depending on specific model variant), and hydraulic line replacement. Likely Girling hydraulic systems. Procedures Included Maintenance: Routine servicing such as oil changes, filter replacements, spark plug replacement, lubrication schedules, and general inspections. Repair And Overhaul: Step-by-step instructions for component disassembly, inspection, repair, reassembly, and adjustment for all major vehicle systems. Troubleshooting: Diagnostic procedures to identify and resolve common problems across all vehicle systems. Technical Depth Depth: Comprehensive. Suitable for professional mechanics and knowledgeable enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds. 📊 Manual Specifications File Format Compatibility: All Versions of Windows and Mac Print Quality Printability: Yes, individual pages are printable. Binding Type Binding: Not applicable (Digital PDF) Paper Type Paper Type: Not applicable (Digital PDF) Requirements Software: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Type: Inline 6-cylinder, DOHC (Dual Overhead Camshaft) Displacement: 3435 cc (3.4 Liters) Bore X Stroke: 83 mm x 104.5 mm Performance Horsepower: Approx. 160 bhp at 5000 rpm (Standard XK120) Torque: Approx. 203 lb-ft at 3000 rpm (Standard XK120) Fuel System Carburetion: Dual SU carburetors (likely HD6 models, though earlier models may have used different variants) Fuel Type: Premium Unleaded Gasoline (or equivalent leaded fuel of the era) Cooling System Coolant Type: Distilled water and antifreeze (specific mixture ratio likely detailed in manual) 🔧 Transmission Standard Type: 4-speed Manual (Moss Gearbox) Features: Synchromesh on 2nd, 3rd, and 4th gears. Optional Type: Fluidrive Automatic (on some later models, rare) Fluid Specification Manual Transmission Fluid: Gear oil (specific API rating and viscosity to be confirmed in manual, typically GL-4) Automatic Transmission Fluid: Automatic Transmission Fluid (ATF), specific type to be detailed in manual. 📐 Dimensions Exterior Wheelbase: Approx. 102 inches (2591 mm) Length: Approx. 167 inches (4242 mm) (Roadster) Width: Approx. 65 inches (1651 mm) Height: Approx. 50 inches (1270 mm) (Roadster, top down) Weights Curb Weight: Approx. 2,800 - 3,000 lbs (1270 - 1360 kg) depending on body style Gross Vehicle Weight: Not explicitly stated, but typically around 3,500 lbs. 🛡️ Safety Features Ratings Crash Test Ratings: N/A (Vehicles from this era were not subjected to modern crash testing standards). Active Features Braking: Hydraulic front and rear drum brakes (later models may have offered optional front discs). Passive Features Seat Belts: Not standard equipment, but retrofitting information may be available or implied for later builds. Chassis Construction: Body-on-frame construction with a separate chassis. 💡 Technology Features Infotainment Radio: Optional factory-fitted or dealer-installed radio systems were available, typically basic AM units. Driver Assistance ABS: Not applicable. Anti-lock Braking Systems were not available. Connectivity Usb Bluetooth: Not applicable. Modern connectivity features were not present. 🔧 Maintenance Service Intervals Oil Change: Typically every 3,000 miles or 6 months, but specific recommendation is in the manual. Grease Points: Regular lubrication of chassis grease points is critical (intervals specified in manual). Fluid Specifications Engine Oil: Viscosity SAE 20W-50 or SAE 30 recommended (depending on climate). Specific additive requirements (e.g.,...