🏷️ Basic Information Identification Make: Triumph Model: Herald Year: 1959 Variant: 1200 / 12-50 Codes Chassis Code: GC10001 onwards (initial production) 👋 Introduction Market Position Target Audience: Professional Technicians, DIY Mechanics, Restoration Enthusiasts Competitive Analysis Value Proposition: Provides exhaustive information for all repair, maintenance, and restoration needs, replicating professional technician resources. Key Features Ease Of Use: Numbered instructions, detailed illustrations, easy-to-use table of contents, combined troubleshooting and wiring diagrams. Delivery Method: Instant Download, No Shipping Costs 📋 Manual Details Coverage Areas Primary Coverage: Full Service, Repair, Maintenance, Rebuild, Refurbishment, Restoration Page Count Estimated Page Count: N/A (Digital Download) Manual Type Type: Full Service Repair Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine: Engine overhaul, tuning, fuel system, cooling system, lubrication system, ignition system Transmission: Gearbox overhaul, clutch, driveshafts Chassis: Frame, suspension (front and rear), steering system Braking System: Hydraulic system, brake drums, wheel cylinders, master cylinder, parking brake Electrical System: Wiring diagrams, lighting, ignition, charging system, starter motor, instrumentation Bodywork: Body shell, doors, windows, trim, convertible top mechanism (if applicable) Fuel System: Carburetor tuning and overhaul, fuel pump, fuel lines Exhaust System: Exhaust manifold, pipes, muffler Procedures Included Maintenance: Scheduled maintenance, fluid changes, lubrication points, filter replacement Repair: Component replacement, adjustment procedures, detailed repair steps Troubleshooting: Diagnostic procedures for common and uncommon faults, electrical troubleshooting Rebuild: Complete engine rebuild, gearbox rebuild, brake system overhaul Diagnostics: Fault diagnosis for all major systems Technical Depth Depth: Comprehensive from basic maintenance to full engine and gearbox rebuilds, including detailed electrical diagnostics. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Full Printable Pages Binding Type Binding: Digital Download (Printable) Paper Type Paper Equivalent: N/A (Digital) Requirements Software Requirements: Adobe PDF Reader, WinRAR (for potential archiving) Compatibility Operating Systems: All Versions of Windows & Mac ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, OHV (Overhead Valve) Displacement Cc: 1200 cc Bore X Stroke Mm: Approx. 73.7 x 71.1 mm Compression Ratio: Approx. 8.5:1 Performance Horsepower Bhp: Approx. 38-42 bhp @ 4,000-4,500 rpm (depending on specific tuning/variant) Torque Lb-Ft: Approx. 65-70 lb-ft @ 2,000-2,500 rpm Fuel System Carburetor: Single Stromberg CD175 or Zenith 36WAI Fuel Type: Leaded Petrol (Octane rating to be confirmed by manual) Ignition System Ignition Type: Coil and Distributor 🔧 Transmission Standard Type: 4-Speed Manual Optional Overdrive: Optional Laycock de Normanville overdrive on some models (likely 12-50 variant) Features Clutch: Single dry plate, hydraulically operated Gear Ratios: Specific ratios detailed in manual Fluid Requirements Transmission Oil: GL-4 Hypoid Gear Oil (Specific grade/viscosity detailed in manual, e.g., SAE 90) 📐 Dimensions Exterior Wheelbase Mm: 2032 mm (80 inches) Overall Length Mm: Approx. 3710 mm (146 inches) Overall Width Mm: Approx. 1524 mm (60 inches) Overall Height Mm: Approx. 1295 mm (51 inches) (Coupe), 1320 mm (52 inches) (Saloon) Weights Curb Weight Kg: Approx. 800-850 kg (1760-1870 lbs) Wheels Tires Wheel Size: 13-inch Tire Size: Typically 5.20-13 or 5.50-13 (bias-ply) Bolt Pattern: 4 x 101.6 mm (4 x 4 inch) 🛡️ Safety Features Ratings Crash Safety Era: Designed to 1950s/early 1960s standards; lacks modern safety features. Active Features Brakes: Hydraulic drum brakes on all wheels Steering: Rack and pinion steering Passive Features Seatbelts: Optional/Not Standard in 1959 models Windscreen: Laminated safety glass (driver's side) often standard, check specific vehicle 💡 Technology Features Infotainment Audio System: Provision for a dashboard-mounted radio, often aftermarket or period-correct accessory. Driver Assistance Features: None by modern standards; basic instrumentation. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 miles or 6 months (manual will specify exact) Tune Up Interval: Recommended annually or every 6,000 miles Fluid Specifications Engine Oil Type: API SF/SG or equivalent (Viscosity typically SAE 20W-50 or SAE 30; manual is definitive) Coolant Type: Water/Antifreeze mix (specific ratio and type detailed in manual) Brake Fluid Type: DOT 3 or DOT 4 Hydraulic Brake Fluid (manual will specify exact type) Known Issues Common Wear Items: Bushings (suspension, steering), clutch components, ignition points, carburetor seals, brake system components. Body Integrity: Rust is a significant concern on body panels, chassis outriggers, and sills; thorough inspection recommended. Electrical Reliability: Older wiring can degrade; connectors can corrode. Maintenance of dynamo/alternator and regulator is crucial. 📚 Vehicle History Brand Heritage Manufacturer: Standard-Triumph (later part of British Leyland) Model Evolution Introduction Year: 1959 Design Philosophy: Designed by Giovanni Michelotti, known for its distinctive character and 'The Little Giant' positioning. Variants Covered By Manual: 1200 (base) and 12-50 (higher specification, potentially with overdrive) Production Production Period: 1959-1971 🏆 Awards & Recognition Recognitions Market Perception: Recognized for its distinctive styling and character, popular in classic car circles for restoration and enjoyment.