Triumph Herald 1200 12-50 1959-1971 WSM Service Repair Manual
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๐ท๏ธ 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) ๐ 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. ๐ 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 ๐ 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 ๐ 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 โ๏ธ 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 ๐ง 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 ๐ 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) ๐ก๏ธ Safety Features Ratings Safety Ratings Era: Safety standards were significantly different in the 1960s; expect basic passive safety...
Triumph Herald 1200 12-50 1959-1971 WSM Service Repair Manual
Codes
Chassis Code:
GHN1/GHN2 (Saloon/Coupe/Convertible)
๐ 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.
๐ 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
๐ 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
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
๐ 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
โ๏ธ 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
๐ง 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
๐ 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)
๐ก๏ธ 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.
๐ก 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.
๐ง 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.
๐ 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.
๐ 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.