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Triumph

Triumph Herald 1200 12-50 1959-1971 WSM Service Repair Manual

Triumph Herald 1200 12-50 1959-1971 WSM Service Repair Manual

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Vehicle data plateRef 457957
Brand
Triumph
Vehicle
Cars
Models covered
Herald, Herald 12-50, Herald 1200
Years
1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

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🏷️ Basic Information
Identification
Make:
Triumph
Model:
Herald
Model Variant:
1200, 12-50
Production Years:
1959-1971
Manual Product Name:
Triumph Herald 1200 12-50 1959-1971 WSM Service Repair Manual
Codes
Chassis Code:
GHN1/GHN2 (Saloon/Coupe/Convertible)
👋 Introduction
Market Position
Market Position:
The Triumph Herald was a popular British small family car known for its distinctive styling and robust engineering, catering to owners who valued reliability and ease of maintenance.
Competitive Analysis
Competitive Analysis:
Competed with vehicles like the Ford Anglia, Morris Minor, and Austin A40 Farina, offering a more upmarket feel and unique chassis design.
Key Features
Key Features:
Unique 'scaffold' chassis providing structural integrity and ease of body repair, spacious interior for its class, and distinctive convertible/coupe options.
Manual Value Proposition
Manual Value Proposition:
Empowers owners to perform their own maintenance and repairs, saving significant costs and ensuring the longevity of their classic Triumph Herald.
📋 Manual Details
Coverage Areas
Vehicles Covered:
Triumph Herald 1200 and 12-50 models from 1959 to 1971
Page Count
Page Count Estimate:
Varies by specific publication, typically 300-600 pages for a comprehensive WSM
Manual Type
Manual Type:
Workshop Service Manual (WSM) / Service Repair Manual
Language
Language:
English
Format
File Format:
PDF
Delivery Method:
Instant Download
📖 Manual Coverage
Systems Covered
Engine:
Yes, detailed diagnostics, repair, and overhaul procedures for the 1147cc and 1296cc engines
Transmission:
Yes, including manual gearbox (4-speed with optional overdrive), clutch, and driveshafts
Brakes:
Yes, covering hydraulic system, front disc and rear drum brakes, bleeding, and component replacement
Suspension:
Yes, including front independent suspension (trailing links, coil springs, telescopic dampers) and rear live axle with leaf springs
Steering:
Yes, rack and pinion steering system, column and linkage adjustments
Electrical System:
Yes, comprehensive wiring diagrams, starter, generator/alternator, ignition system, lighting, and accessories
Fuel System:
Yes, including fuel tank, pump, carburettors (Zenith/SU), and fuel lines
Cooling System:
Yes, radiator, water pump, thermostat, and heater matrix
Exhaust System:
Yes, manifold, pipes, silencer, and mounting
Bodywork:
Yes, structural components, doors, boot, bonnet, glass, and trim
Chassis:
Yes, the unique 'scaffold' chassis design and its maintenance
Procedures Included
Routine Maintenance:
Yes, oil changes, filter replacement, tune-ups, lubrication points, and fluid checks
Troubleshooting:
Yes, diagnostic procedures for common faults and symptoms
Repair:
Yes, step-by-step instructions for component removal, repair, and reinstallation
Overhaul:
Yes, detailed procedures for engine, gearbox, and other major component overhauls
Wiring Diagrams:
Yes, comprehensive and clear wiring diagrams for all electrical systems
Technical Depth
Technical Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds
📊 Manual Specifications
File Format
File Format:
PDF
Readability:
High quality, designed for clear viewing and printing
Print Quality
Printability:
Full printable pages, allowing users to print specific sections or the entire manual
Binding Type
Binding Type Digital:
N/A (Digital Download)
Paper Type
Paper Type Digital:
N/A (Digital Download)
Software Requirements
Software Requirements:
Adobe PDF Reader
Compatibility
Operating Systems:
Compatible with all versions of Windows and Mac
⚙️ Engine Specifications
Primary Engine
Engine Code Herald 1200:
Standard engine in Herald 1200 was the 1147cc OHV inline-4
Engine Code Herald 12-50:
The Herald 12-50 featured the 1296cc OHV inline-4 engine
Performance 1147Cc
Horsepower 1147Cc:
Approximately 39-46 bhp (depending on tune and carburetion)
Torque 1147Cc:
Approx. 63-67 lb-ft at 2500-3000 rpm
Performance 1296Cc
Horsepower 1296Cc:
Approximately 50-54 bhp
Torque 1296Cc:
Approx. 70-75 lb-ft at 3000 rpm
Fuel System
Carburettor Options:
Single Zenith 36IV or SU H2 carburettor on 1200; often twin SU HS2 on 12-50 models
Fuel Type:
Leaded gasoline (petrol) during its production era. Unleaded conversion considerations may be found in advanced sections.
Lubrication
Oil Type Recommendation:
API SE or SF classification, SAE 20W/50 is generally recommended for ambient temperatures
Oil Capacity:
Approximately 4.5 litres (4.8 US quarts) including filter
🔧 Transmission
Standard
Transmission Type Standard:
4-speed manual gearbox
Optional
Transmission Type Optional:
Optional Laycock de Normanville overdrive (usually on 4th gear) for 1200 models
Features
Gear Ratios:
Detailed gear ratios for all gears and overdrive available in the manual
Clutch
Clutch Type:
Single dry plate diaphragm spring clutch
Fluid Specifications
Gearbox Oil Type:
GL4 80W/90 gear oil is commonly used, but manual will specify original recommendations (e.g., EP 90)
Clutch Fluid
Clutch Fluid Type:
DOT 3 or DOT 4 brake fluid
📐 Dimensions
Exterior
Wheelbase:
82 inches (2083 mm)
Length:
Approx. 154 inches (3912 mm)
Width:
Approx. 62 inches (1575 mm)
Height:
Approx. 50 inches (1270 mm) for saloon, slightly less for convertible
Weights
Kerb Weight:
Approx. 1750-1900 lbs (794-862 kg) depending on body style and equipment
Gross Vehicle Weight:
Refer to manual for specific GVW ratings
Wheels Tires
Wheel Size:
13 inch wheels
Tire Size Standard:
5.20 x 13 or 5.60 x 13 (cross-ply), radial equivalents may vary
Bolt Pattern:
4 x 108 mm (4 x 4.25 inches)
🛡️ Safety Features
Ratings
Safety Ratings Era:
Safety standards were significantly different in the 1960s; expect basic passive safety features.
Active Features
Active Features:
Effective hydraulic braking system (front discs standard on 1200/12-50), responsive steering.
Passive Features
Passive Features:
Seat belts were often optional equipment and not universally fitted or mandated during the early years of production. The chassis design inherently offered some structural protection.
💡 Technology Features
Infotainment
Infotainment Features:
Basic radio (often optional), heater and ventilation system.
Driver Assistance
Driver Assistance Features:
None by modern standards. Focus on mechanical systems.
Connectivity
Connectivity Features:
No electronic connectivity features.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000 miles (4,800 km) or 6 months
Tune Up Interval:
Every 6,000 miles (9,600 km) or 12 months, including ignition timing, carburation, and valve clearances
Grease Points:
Regular lubrication of suspension, steering, and prop shaft UJs as per schedule (often 1,000-3,000 mile intervals)
Fluid Specifications
Coolant Type:
Water with anti-freeze/anti-corrosion additive (specific glycol concentration will be detailed)
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid
Known Issues
Known Issues Chassis:
Rust and corrosion, particularly on the 'scaffold' chassis members and outriggers, requires regular inspection and treatment.
Known Issues Engine:
Valve seat wear (if running unleaded without hardened seats), oil leaks, and occasional gasket failures.
Known Issues Electrical:
Aging wiring harnesses, Lucas components can be prone to issues if not maintained.
Filter Part Numbers
Oil Filter Part Number Example:
FRAM PH3600, or equivalent Mann, Wix, Purflux filters (manual will list specific OEM or equivalent)
Air Filter Part Number Example:
Depends on carburettor type, but specific part numbers will be in the manual.
📚 Vehicle History
Brand Heritage
Brand Heritage:
Triumph, a marque with a rich history in British motoring, known for sports cars and robust saloons.
Model Evolution
Model Evolution Herald:
The Herald was launched in 1959 as a replacement for the Standard Eight/Ten. It evolved through several engine sizes (948cc, 1200, 1300) and body styles (saloon, coupe, convertible, estate). The 1200 and 12-50 models represent key mid-to-late production variants.
Production
Production Location:
Coventry, England
Production Volume Estimate:
Over 500,000 Heralds were produced across all variants.
🏆 Awards & Recognition
Recognitions
Recognitions:
While specific awards for the Herald are rare, it was a well-regarded and popular model in its class, contributing significantly to Triumph's market presence.
Certifications
Certifications:
N/A for this era and type of manual. The manual itself is professional quality for repair.

Delivery & file format

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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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