🏷️ Basic Information Identification Make: Triumph Model: Herald Model Variant: 1200 / 12-50 Codes Production Years Covered: 1959-1971 👋 Introduction Market Position Target Audience: Triumph Herald owners and mechanics engaged in repair, maintenance, and restoration Competitive Analysis Manual Advantage: Comprehensive coverage for a wide range of years, detailed procedures, diagnostic information, and wiring diagrams, presented in a readily accessible digital format Key Features Feature 1: Detailed step-by-step instructions with numbered procedures Feature 2: Includes notes, cautions, and warnings for critical information Feature 3: Extensive use of illustrations, drawings, and photos Feature 4: Enlarged insets for detailed part examination Feature 5: Combined troubleshooting and electrical service with wiring diagrams 📋 Manual Details Coverage Areas Countries Of Operation: Global Page Count Estimated Page Count: Extensive (Specific number not provided, but described as 'very detailed' and 'comprehensive') Manual Type Type: Full Service Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Engine Systems: Engine overhaul, tuning, lubrication, cooling, fuel delivery (carburettors), ignition system, exhaust system Transmission Systems: Gearbox overhaul, clutch, driveshafts Chassis Systems: Suspension (front and rear), steering system, braking system (including hydraulic circuits and components), wheels and tires Electrical Systems: Wiring diagrams, lighting, starting system, charging system, instrumentation, auxiliary electrics Body And Trim: Body repairs, trim components, doors, windows, convertible top (if applicable) Procedures Included Maintenance: Routine servicing, lubrication schedules, fluid checks and changes, filter replacements Diagnostics: Troubleshooting guides for common and uncommon issues, electrical system diagnostics Repair: Step-by-step repair procedures for all major mechanical and electrical components Rebuild: Comprehensive procedures for engine, gearbox, and other major component rebuilds Refurbishment: Guidance on restoring components and the vehicle to original specifications Bodywork Repair: Detailed procedures for panel alignment, rust repair, and structural integrity checks. Lighting System Repair: Diagnosis and repair of headlights, taillights, indicators, and interior lighting circuits. Starting And Charging Systems: Troubleshooting and repair of the starter motor, dynamo/alternator, and battery circuits. Interior Trim And Fittings: Guidance on removing and refitting interior panels, seats, and dashboard components. Technical Depth Depth: Professional Technician Level, also suitable for advanced DIY mechanics Diagnostic Tools Implication: While advanced electronic diagnostic tools are not relevant, the manual covers traditional diagnostic methods using basic tools and visual inspection. 📊 Manual Specifications File Format Print Quality: Full Printable Binding Type Binding: Digital (PDF), can be burned to CD-ROM or printed Paper Type Paper Type Implication: N/A (Digital Format) Software Requirements Required Software: Adobe PDF Reader, WinRAR Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, Overhead Valve (OHV) Displacement 1200: 1147 cc (70.0 cu in) Bore 1200: 3.27 in (83 mm) Stroke 1200: 2.75 in (70 mm) Compression Ratio 1200: Approx. 8.0:1 Carburetor 1200: Single Zenith-Stromberg CD125 or SU H2 Horsepower 1200: Approx. 38-45 bhp (net) at 4500-4800 rpm (depending on specific tuning and carburation) Torque 1200: Approx. 58-62 lb-ft (net) at 2500-3000 rpm Engine Type 12-50: Inline 4-cylinder, Overhead Valve (OHV) Displacement 12-50: 1296 cc (79.1 cu in) (This engine variant is sometimes associated with the later Herald 13/60, but the manual covers models up to 1971 where this could be present or an upgrade. The manual product name specifically lists 1200/12-50, so the 1296cc engine is less likely for the standard 12-50 model but could be a variant in the later years covered by the manual, or a typo in the product description. Assuming the core models are 1147cc for 1200 and potentially a slightly tuned version or early 1296cc for the 12-50 in later years. The manual's broad year range supports covering engine variations.) Carburetor 12-50: Often a twin SU H2 or Zenith-Stromberg Horsepower 12-50: Approx. 50-55 bhp (net) at 4700-5000 rpm (for the 1296cc variant if applicable to the 12-50 designation) Fuel System Fuel Type: Leaded or Unleaded Petrol (manual will detail conversion/compatibility) Fuel Pump: Mechanical, engine-driven 🔧 Transmission Standard Transmission Type: 4-speed Manual Synchromesh (all forward gears) Optional Automatic Transmission: Optional Laycock de Normanville overdrive on top gear (often designated by 'O/D') Features Clutch Type: Single dry plate Gear Ratios Manual: Specific ratios will be detailed in the manual, typically around 3.5:1 for 1st, 2.1:1 for 2nd, 1.4:1 for 3rd, 1:1 for 4th 📐 Dimensions Exterior Wheelbase: Approx. 82 inches (2083 mm) Length: Approx. 153 inches (3886 mm) Width: Approx. 60 inches (1524 mm) Height: Approx. 50 inches (1270 mm) (Saloon) Weights Kerb Weight: Approx. 1750-1850 lbs (794-840 kg) 🛡️ Safety Features Ratings Safety Ratings: N/A (Contemporary safety standards and testing were significantly different) Active Features Brakes: Front: Dunlop or Girling Disc Brakes; Rear: Drum Brakes Steering: Rack and Pinion Steering Passive Features Seatbelts: Optional (likely lap belts in early models, but later years may have had provision or fitment) Construction: Body-on-chassis construction with a distinct 'frame' that also serves as structural support for the body...