🏷️ Basic Information Identification Make: Triumph Model: Herald Sub Model: 1200 / 12-50 Production Years: 1959-1971 Codes Chassis Codes: HA, HB, HC, HD, HE 👋 Introduction Market Position Target Audience: Triumph Herald owners, classic car enthusiasts, independent mechanics, DIY restorers Competitive Analysis Value Proposition: Provides comprehensive, actionable repair and maintenance information, enabling owners to service their vehicles independently and cost-effectively. Key Features Convenience: Instant download, accessible on multiple devices, allows for anytime/anywhere repairs. Cost Saving: Empowers users to save on labor costs by performing repairs themselves. Knowledge Enhancement: Builds in-depth understanding of vehicle systems and fosters self-reliance for repairs. Accessibility: Eliminates the need to search physical bookstores for out-of-print or rare manuals. 📋 Manual Details Coverage Areas Primary Coverage: Triumph Herald 1200 and 12-50 models Specific Years Covered: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 Page Count Estimated Pages: Comprehensive (exact page count not specified, typical for this era would be 200-400+ pages) Manual Type Type: Service and Repair Manual / Workshop Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, fuel system, cooling system, lubrication Transmission: Manual gearbox (4-speed), clutch, driveline, differential Brakes: Hydraulic front disc brakes, rear drum brakes, master cylinder, wheel cylinders, braking system overhaul Electrical System: Wiring diagrams, ignition system, lighting, starting system, charging system, accessories Suspension: Front independent suspension (transverse leaf spring), rear live axle with semi-elliptic springs, shock absorbers Steering: Rack and pinion steering system, steering column, linkages Chassis Body: Body construction, frame, doors, panels, trim, glass, weather sealing Fuel System: Carburetor (e.g., Zenith Stromberg, SU), fuel pump, fuel tank, lines Cooling System: Radiator, fan, water pump, thermostat, coolant flow Emission System: Early emission control systems (if applicable for later models) Restraint System: Seat belts (later models), general body structure considerations Axle: Rear axle assembly, half-shafts, hub assemblies Procedures Included Maintenance: General maintenance, periodic lubrication, fluid changes, filter replacements Troubleshooting: Systematic fault finding for common and uncommon issues Repair: Step-by-step instructions for component disassembly, repair, and reassembly Refurbishment Renovation: Guidance on restoring and renovating worn or damaged components Electrical Diagnosis: Troubleshooting electrical faults using wiring diagrams and test procedures Engine Rebuild: Detailed instructions for complete engine overhaul and rebuilding Transmission Overhaul: Procedures for dismantling, servicing, and reassembling the gearbox and clutch Brake System Service: Brake pad/shoe replacement, bleeding, hydraulic component replacement Technical Depth Depth: Comprehensive, covering everything from basic routine maintenance to complete engine and transmission rebuilds, including diagnostics and troubleshooting. 📊 Manual Specifications File Format Format: PDF Software Requirements: Adobe PDF Reader Compression Software: WinZip (or equivalent) Operating System Compatibility: All Windows versions, Mac OS Print Quality Quality: Digital (suitable for printing key sections or the entire manual) Binding Type Binding: N/A (Digital download) Paper Type Paper: N/A (Digital download) ⚙️ Engine Specifications Primary Engine Type: Inline 4-cylinder, Overhead Valve (OHV) Displacement: 1147 cc (70.0 cu in) Bore X Stroke: 73.7 mm x 66.0 mm (2.90 in x 2.60 in) Compression Ratio: Approx. 8.5:1 (varies slightly by model year and tune) Performance Horsepower: Approx. 47-50 bhp (35-37 kW) at around 4800-5000 rpm Torque: Approx. 62-64 lb-ft (84-87 Nm) at around 2500-3000 rpm Fuel System Carburetor: Single Zenith Stromberg CD175 or SU H2/HS2 carburetor (model dependent) Fuel Type: Leaded or Unleaded Petrol (later models may have provision for unleaded, lead substitute recommended for earlier engines) Engine Control System Ignition Type: Distributor-based ignition system 🔧 Transmission Standard Type: 4-speed manual gearbox Gear Ratios: Specific ratios vary slightly by year, typically direct drive top gear. Clutch Type: Dry single plate diaphragm spring clutch Features Synchromesh: Synchromesh on all forward gears 📐 Dimensions Exterior Wheelbase: 2032 mm (80.0 in) Front Track: 1220 mm (48.0 in) Rear Track: 1194 mm (47.0 in) Weights Kerb Weight: Approx. 800-870 kg (1764-1918 lbs), depending on body style and equipment. 🛡️ Safety Features Ratings Crash Safety: As per 1960s design standards; later models may have had basic seat belt anchorages. Active Features Braking System: Front disc brakes, rear drum brakes Passive Features Body Structure: Body-on-frame construction with integrated unitary body panels. 💡 Technology Features Infotainment Radio: Optional period-appropriate AM radio. Driver Assistance Features: No electronic driver assistance features typical of modern vehicles. Focus is on mechanical systems. Connectivity Features: N/A (No modern connectivity features). 🔧 Maintenance Service Intervals Oil Change: Typically every 3,000 miles or 6 months (consult manual for specific grade) Grease Points: Regular lubrication of chassis grease points (e.g., suspension pivots, steering joints) at every oil change or as specified. Tune Up: Recommended tune-ups (ignition points, spark plugs, carburetor adjustment) every 6,000-10,000 miles. Fluid Specifications Engine Oil: API SF/CD or SG/CD equivalent (e.g., 20W-50 or 10W-40 depending on climate and engine condition). Early manuals may specify straight SAE 30 or 20W-30. Gearbox Oil: API GL-4 SAE 90 Hypoid Gear Oil Differential Oil: API GL-4 SAE 90...