🏷️ Basic Information Identification Make: Jaguar Model: XK120 Product Name: Jaguar Mark VII and XK120 Air Conditioning Equipment Codes Manual Code Prefix: Illustrates specific factory documentation related to aftermarket or dealer-installed accessories, likely denoted by internal Jaguar accessory codes. 👋 Introduction Market Position Vehicle Market Segment: The Mark VII and XK120 were positioned as luxury grand tourers and sports cars, representing the pinnacle of post-war British automotive engineering and performance. Competitive Analysis Competitors: Competed with other high-performance luxury vehicles of the era, such as Aston Martin, Bentley, Ferrari, and higher-spec models from Rolls-Royce and Mercedes-Benz. Air conditioning was a premium, often optional, luxury feature on these cars. Key Features Ac System Value Proposition: The addition of air conditioning significantly enhanced the comfort and usability of these cars, particularly for touring in warmer climates, positioning them as truly viable all-weather luxury vehicles. 📋 Manual Details Coverage Areas Coverage Scope: This manual is dedicated exclusively to the installation, operation, and maintenance of the factory-approved or dealer-installed air conditioning systems for the Jaguar Mark VII and Jaguar XK120 models. Page Count Estimated Page Count: Approximately 50-75 pages (typical for accessory-specific technical manuals of the era). Manual Type Manual Type: Technical Service Bulletin / Accessory Installation & Service Manual Language Language: English Format Format: Likely a printed manual, potentially also available as a rare factory-produced microfiche or early technical document scan. 📖 Manual Coverage Systems Covered Air Conditioning System: Covers the entire air conditioning system components: compressor, condenser, evaporator, receiver-drier, expansion valve, refrigerant lines, controls, and blower motor. Electrical System Integration: Details the electrical connections for the AC system, including power supply, relay logic, fuse protection, and switch integration into the vehicle's dashboard and wiring harness. Cooling System Interface: Explains any necessary modifications or considerations for the vehicle's engine cooling system to accommodate the AC compressor belt drive and potential airflow changes. Procedures Included Installation Procedures: Step-by-step instructions for mounting the compressor, condenser, evaporator core, control panel, and routing refrigerant lines and electrical wiring. Refrigerant Handling: Guidance on charging the system with the correct refrigerant type (likely R-12 Freon for this era) and quantity, including evacuation and leak testing procedures. Troubleshooting Diagnostics: Common issues encountered with early AC systems, diagnostic charts, and corrective actions for insufficient cooling, leaks, or electrical faults. Maintenance Procedures: Routine maintenance tasks such as checking belt tension, cleaning condenser fins, and inspecting refrigerant levels. Technical Depth Technical Depth Level: Advanced installation and service. Assumes a good understanding of automotive mechanics and basic electrical principles. Diagnostic Charts: Includes detailed diagnostic flowcharts for identifying specific AC system malfunctions. Component Identification: Clearly identifies and labels all AC system components with diagrams and part numbers where applicable. 📊 Manual Specifications File Format File Format Detail: If digital, likely a scanned PDF of an original factory document. Original printed versions would be on period-appropriate paper stock. Print Quality Print Quality Detail: Original print quality: typically black and white line drawings, technical schematics, and text. Scans may vary in clarity. Binding Type Binding Type Detail: Original: stapled or saddle-stitched booklet. Modern reproductions may vary. Paper Type Paper Type Detail: Original: standard factory paper stock for technical documents of the mid-20th century. ⚙️ Engine Specifications Primary Engine Jaguar Mark Vii Engine: 3.4-liter (3442cc) Jaguar XK Straight-6 engine. Jaguar Xk120 Engine: 3.4-liter (3442cc) Jaguar XK Straight-6 engine. Later XK120 models and XK140/150 offered variations. Performance Mark Vii Horsepower: Approximately 160 hp @ 4750 rpm (depending on carburation and tuning). Xk120 Horsepower: Approximately 160-180 hp @ 5000 rpm (depending on specific model variant, e.g., standard, Special Equipment). Fuel System Carburetion: Typically twin SU carburetors (e.g., HS6 or HD6). Engine Notes Ac Compressor Drive: The AC compressor would require a dedicated belt drive, often via an additional pulley on the crankshaft or water pump pulley, and a mounting bracket specific to the engine bay layout. 🔧 Transmission Standard Mark Vii Transmission: 4-speed manual transmission with optional Laycock de Normanville overdrive. Xk120 Transmission: 4-speed manual transmission with optional Laycock de Normanville overdrive. Optional Automatic Transmission: While early models were manual, later Mark VII variants and some XK derivatives offered an automatic transmission (e.g., Moss gearbox or early BorgWarner). Features Clutch Type: Single dry plate clutch. 📐 Dimensions Exterior Mark Vii Wheelbase: 119 inches (3023 mm). Xk120 Wheelbase: 102 inches (2591 mm). Mark Vii Length: 191.5 inches (4864 mm). Xk120 Length: 168 inches (4267 mm) (coupe/drophead coupe), 178 inches (4521 mm) (roadster). Weights Mark Vii Curb Weight: Approx. 3,700 lbs (1678 kg). Xk120 Curb Weight: Approx. 3,000 lbs (1361 kg) (roadster/drophead coupe). Ac Installation Considerations Weight Impact: Addition of AC components (compressor, condenser, receiver-drier, evaporator, refrigerant) would add approximately 30-50 lbs to the vehicle's curb weight. 🛡️ Safety Features Ratings Era Safety Standards: Safety standards of the 1950s were significantly different. These vehicles predate modern crash testing and safety regulations. Focus was...