🏷️ Basic Information Identification Make: Triumph Model: Herald Year: 1971 Variant: 1200 / 12-50 Codes Engine Code Examples: Standard Herald 1200: OHV Inline-4; Herald 12-50: OHV Inline-4 with Stromberg CD Carburetor 👋 Introduction Market Position Target Audience: Triumph Herald owners and mechanics undertaking repairs, maintenance, or restoration Competitive Analysis Value Proposition: Provides comprehensive factory-level information, equivalent to professional workshop manuals, at a fraction of the cost and with instant accessibility. Key Features Ease Of Use: Numbered instructions, bold figure numbers, detailed illustrations, and a clear table of contents facilitate efficient use. Troubleshooting Integration: Electrical troubleshooting and service procedures are integrated with wiring diagrams for streamlined diagnostics. 📋 Manual Details Coverage Areas Primary Focus: Full Service Repair and Maintenance Page Count Estimated Page Count: Extensive (typical for comprehensive factory-style manuals, likely 500+ pages) Manual Type Type: Full Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed engine overhaul, tuning, troubleshooting, lubrication, cooling system, fuel system, exhaust system Transmission: Manual gearbox overhaul, clutch assembly, driveshafts, propellor shaft Brakes: Hydraulic system, brake shoes, drums, calipers, master cylinder, wheel cylinders, parking brake Electrical: Wiring diagrams, ignition system, lighting, starting system, charging system, instrumentation, accessories Suspension: Front suspension (independent), rear suspension (live axle), shock absorbers, springs, bushings Steering: Steering column, steering rack, tie rods, steering geometry Bodywork: Chassis construction, body panels, doors, windows, seats, trim, convertible top mechanism (for 12-50 variant) Wheel Alignment: Specifications and procedures for checking and adjusting wheel alignment (geometry). Fuel Tank And Lines: Procedures for removal, cleaning, and replacement of fuel tank and associated lines. Cooling System: Radiator, hoses, water pump, thermostat, and heater matrix servicing and repair. Procedures Included Maintenance: Regular service schedules, fluid changes, lubrication points, filter replacements Repair: Detailed step-by-step repair procedures for all major mechanical and electrical components Rebuilding: Comprehensive instructions for engine and gearbox rebuilds Refurbishment: Guidance on restoring various vehicle components Diagnostics: Troubleshooting guides for common and uncommon problems, electrical system diagnostics Wiring Diagrams: Detailed, integrated wiring diagrams for all electrical systems, facilitating fault diagnosis and repair. Chassis Lubrication: Detailed lubrication points and schedules for the chassis and running gear. Technical Depth Depth: Professional Technician Level, with content suitable for experienced DIY mechanics Illustrations: Includes numerous detailed illustrations, drawings, and photographs to guide users through repair and maintenance tasks. Tightening Torques: Specifications for critical bolt and nut tightening torques across all systems. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Full Printable Binding Type Binding: Digital Download (printable pages) Paper Type Paper Recommendation: User printable on standard paper ⚙️ Engine Specifications Primary Engine Engine Type: Overhead Valve (OHV) Inline 4-Cylinder Displacement: 1200 cc (1.2 Litre) for Herald 1200; 1200 cc (1.2 Litre) with higher compression and single Stromberg CD carburetor for Herald 12-50 Performance Horsepower 1200: Approx. 39 bhp (brake horsepower) Horsepower 12-50: Approx. 44 bhp (brake horsepower) due to improved carburetion and compression ratio Fuel System Carburetor 1200: Single Solex or SU Carburetor Carburetor 12-50: Single Stromberg CD Carburetor Lubrication Oil Type: Refer to manual for specific viscosity (e.g., SAE 20W-50 recommended for many classic British vehicles of this era) Cooling System: Water-cooled, with thermostat and fan 🔧 Transmission Standard Gearbox: 4-speed manual gearbox Optional Overdrive: Optional Laycock de Normanville overdrive available on some models/variants Features Clutch: Single dry plate diaphragm spring clutch Gear Ratios: Specific ratios detailed in the manual for each gear and reverse 📐 Dimensions Exterior Wheelbase: Approx. 82 inches (2083 mm) Length: Approx. 147 inches (3734 mm) Width: Approx. 61 inches (1549 mm) Height: Approx. 50 inches (1270 mm) for Saloon Weights Kerb Weight: Approx. 1700-1800 lbs (770-816 kg) depending on body style 🛡️ Safety Features Ratings Crash Safety: Era-appropriate safety features; advanced crash structures were not a primary focus of vehicle design in this period. Active Features Brakes: Hydraulic front disc brakes (optional on some early models, standard on 1200/12-50), rear drum brakes Passive Features Seatbelts: Optional seatbelts may have been fitted; availability varied by market and optional extras. Chassis: Robust chassis construction for its time 💡 Technology Features Infotainment Audio: Provision for radio installation; original equipment typically AM radio or blanking plate. Driver Assistance Features: None beyond basic driver controls and safety features of the era. Connectivity Features: No electronic connectivity features. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual, typically every 3,000-5,000 miles or 6-12 months Tune Up Interval: Refer to manual, often around 10,000-12,000 miles for spark plug replacement and ignition timing checks Fluid Specifications Brake Fluid: DOT 3 or DOT 4 hydraulic fluid (confirm in manual) Coolant: Mixture of antifreeze and water (50/50 recommended) Known Issues Chassis Corrosion: Susceptible to rust, particularly in sills, wheel arches, and chassis outriggers due to construction. Engine Oil Leaks: Common from oil seals and gaskets over time. Suspension Bushings: Wear and tear on rubber bushings leading to...