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Triumph

Triumph Herald 1200 12-50 1971 Full Service Repair Manual

Triumph Herald 1200 12-50 1971 Full Service Repair Manual

$16.99
$16.99
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Vehicle data plateRef 449019
Brand
Triumph
Vehicle
Cars
Models covered
Herald, Herald 12-50, Herald 1200
Years
1971
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your model year? Ask us before you buy
🏷️ 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 play and uneven handling.
📚 Vehicle History
Brand Heritage
Manufacturer:
Standard-Triumph (later part of British Leyland)
Model Evolution
Herald Lineage:
The Herald was produced from 1959 to 1971, known for its distinctive styling and modular chassis/body construction. The 1200 and 12-50 were later, more refined versions.
Production
Production Years For Variant:
Triumph Herald 1200 and 12-50 models were primarily produced in the 1960s, with the 1971 model year representing the final production run.
🏆 Awards & Recognition
Recognitions
Historical Accolades:
The Triumph Herald was generally well-received for its affordable price, comfortable ride, and distinctive styling, particularly appealing to those seeking a stylish yet economical small car.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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