🏷️ Basic Information Identification Make: Triumph Model: Herald Sub Model: 1200 / 12-50 Year Range Covered: 1959-1971 Product Name: Triumph Herald 1200 12-50 1959-1971 Factory Service Repair Manual 👋 Introduction Market Position Historical Context: The Triumph Herald was a British small car produced by the Standard-Triumph company. It was known for its distinctive styling and relatively simple construction, designed for affordability and ease of maintenance. Competitive Analysis Contemporary Rivals: Competed with vehicles like the Ford Anglia, Morris Minor, and Vauxhall Viva. Key Features Design Highlights: Unique 'modern' styling for its era, independent suspension on all wheels, robust chassis design, available in various body styles (saloon, convertible, estate). Target Audience: Designed as a practical and economical car for families and individuals, appealing to those seeking a reliable British motor car. 📋 Manual Details Coverage Areas Documentation Type: Factory Service Repair Manual Language: English Format: PDF Page Count Estimated Page Count: Varies by specific factory publication, typically hundreds of pages for comprehensive coverage. Manual Type Manual Classification: Comprehensive Service and Repair Manual 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, tuning, fuel system (carburettors, fuel pump), ignition system, cooling system, lubrication system, exhaust system. Transmission And Drivetrain: Gearbox overhaul, clutch service, differential, drive shafts, universal joints. Chassis And Suspension: Front and rear suspension, steering system, wheels, tyres, front and rear wheel bearings. Braking System: Hydraulic system, front and rear brakes (drums and potentially early discs depending on spec), brake fluid specifications, bleeding procedures. Electrical System: Wiring diagrams, starter motor, dynamo/alternator, battery, lighting, instrumentation, ignition switch, horn, wipers, radio. Bodywork And Trim: Body panel repairs, door mechanisms, window regulators, seat adjustments, interior trim, convertible top mechanisms (if applicable). Cooling System: Radiator, hoses, water pump, thermostat, coolant capacity, flushing and filling procedures. Lubrication System: Oil pump, oil filter, oil galleries, oil pressure testing, oil capacity. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, ignition timing checks, valve clearance adjustments, general inspections. Troubleshooting Guides: Diagnostic procedures for common problems and symptoms across all major systems. Repair And Overhaul: Step-by-step instructions for dismantling, repairing, and reassembling major components. Technical Specifications: Torque settings, clearances, fluid capacities, electrical specifications, engine data. Engine Tuning: Carburetor adjustment, ignition timing, idle speed settings, spark plug recommendations. Wiring Diagrams: Detailed wiring schematics for electrical systems, essential for troubleshooting electrical faults. Technical Depth Diagnostic Capabilities: Comprehensive diagnostics for mechanical and electrical faults, including symptom-based troubleshooting. Rebuild Instructions: Detailed instructions for complete engine, gearbox, and differential rebuilds. Parts Information: Likely includes exploded views and part numbers for identification during repair. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format), requiring Adobe Reader or compatible software. Print Quality Digital Quality: High-resolution scans of original factory documentation, ensuring clarity of text and diagrams. Binding Type Physical Representation: Not applicable as it is a digital PDF manual. (If physical, would be spiral-bound or similar for workshop use). Paper Type Physical Representation: Not applicable as it is a digital PDF manual. ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, overhead valve (OHV) Displacement: 1200cc (approximately 73.2 cubic inches) Bore X Stroke: Approximately 73.7 mm x 76 mm Compression Ratio: Typically 8.0:1 or 8.5:1 depending on variant and market. Performance Horsepower: Approximately 40-48 bhp (net) at 4500-5000 rpm for the 1200 models. Torque: Approximate torque figures would be around 60-65 lb-ft at 2500-3000 rpm. Fuel System Carburetion: Single Solex downdraft or Stromberg downdraft carburettor for 1200 models. The 12-50 model may have featured twin SU carburettors for increased performance. Fuel Type: Leaded or unleaded petrol (with potential for lead additive or hardened valve seats for unleaded). 🔧 Transmission Standard Gearbox Type: Four-speed manual gearbox with synchromesh on the top three gears. Optional Automatic Transmission: An optional Borg-Warner 3-speed automatic transmission was available on some models, notably the 12-50 'Automatic'. Features Clutch Type: Single dry plate diaphragm spring clutch. 📐 Dimensions Exterior Wheelbase: Approximately 82 inches (2083 mm) Overall Length: Approximately 155 inches (3937 mm) Overall Width: Approximately 61 inches (1549 mm) Overall Height: Approximately 51 inches (1295 mm) Weights Curb Weight: Approximately 1700-1900 lbs (770-860 kg) depending on body style and equipment. 🛡️ Safety Features Ratings Crash Testing: Modern crash safety standards were not a primary design focus for vehicles of this era. No official NCAP ratings available. Active Features Braking System Details: Hydraulic drum brakes front and rear. Early models may have had optional front disc brakes on higher-specification variants. The manual would detail brake pad/shoe replacement and hydraulic system maintenance. Passive Features Seat Belts: Seat belts were often an optional extra or fitted retrospectively on vehicles of this vintage. The manual may cover installation points if factory-fitted. Body Construction: Body-on-chassis construction with a separate unitary body shell, offering a degree of rigidity. 💡 Technology Features Infotainment Audio System: Likely a basic AM radio, often optional. The manual may cover radio installation...