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Triumph

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

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

$16.99
$16.99
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Vehicle data plateRef 463471
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

  • 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
Model Variants:
1200, 12-50
Production Years Covered:
1959-1971
Codes
Chassis Codes:
Not specified in product information, typically H1000 onwards
👋 Introduction
Market Position
Vehicle Segment:
Compact/Small family car, known for its unique styling and good handling.
Competitive Analysis
Key Competitors:
Ford Anglia, Morris Minor, Austin A40 Farina, Hillman Imp.
Key Features
Unique Selling Points:
Innovative monocoque construction for its era, spacious interior for its size, distinctive styling, robust engineering.
Body Styles:
Available as a 2-door saloon, 4-door saloon, convertible, and estate (Herald Courier van).
📋 Manual Details
Coverage Areas
Coverage Scope:
Comprehensive repair and service for Triumph Herald 1200 and 12-50 models.
Page Count
Page Count:
Not explicitly stated, but implied to be comprehensive as a factory equivalent.
Manual Type
Manual Type:
Repair Service Manual / Workshop Manual
Manual Purpose:
Aids in the maintenance, diagnosis, and repair of the Triumph Herald, suitable for both novice and experienced mechanics.
Language
Language:
English
Format
Format:
PDF Download
📖 Manual Coverage
Systems Covered
Engine And Drivetrain:
Engine overhaul, tuning, cooling system, fuel system (carburettors), exhaust system, clutch, gearbox, drive shafts.
Chassis And Suspension:
Front and rear suspension, steering system, chassis frame, body mounting, lubrication.
Braking System:
Front and rear drum brakes (later models may have front discs), hydraulic system, brake adjustment, fluid specifications.
Electrical System:
Ignition system, lighting, charging system (generator/alternator), starter motor, wiring diagrams, instrument cluster.
Bodywork And Trim:
Body panel removal/installation, door mechanisms, window mechanisms, interior trim, seals, weatherstripping.
Procedures Included
Maintenance Procedures:
Scheduled maintenance, lubrication points, fluid changes, filter replacements, tune-up procedures.
Repair Procedures:
Step-by-step instructions for disassembly, cleaning, inspection, repair, and reassembly of all major components.
Troubleshooting Guides:
Diagnostic procedures for common problems, fault finding charts.
Engine Rebuild:
Detailed procedures for complete engine disassembly, inspection of cylinder head, block, crankshaft, camshaft, pistons, and reassembly with specified tolerances and torque settings.
Transmission Overhaul:
Instructions for gearbox and overdrive unit removal, dismantling, component inspection, and reassembly, including gear ratios and bearing preloads.
Suspension And Steering Repair:
Guidance on replacing king pins, trunnions, bushings, shock absorbers, and steering rack/box components.
Body And Paint Repairs:
Information on jacking points, chassis strengthening, and common repair areas for bodywork.
Technical Depth
Depth Of Information:
Detailed technical specifications, tolerances, torque values, and schematics suitable for professional technicians and skilled DIY enthusiasts.
Wiring Diagrams:
Includes comprehensive electrical schematics for all vehicle systems.
Torque Specifications:
Detailed torque values for critical fasteners across all mechanical systems.
Part Identification:
Often includes diagrams and part numbers for identification and ordering.
📊 Manual Specifications
File Format
File Format:
PDF
Print Quality
Print Quality:
Full Printable
Zoom Functionality
Zoom In Out:
YES
Requirements
Software Requirements:
Adobe PDF Reader, WinZip (or equivalent for unzipping)
Compatibility
Operating System Compatibility:
All Versions of Windows & Mac
Delivery Method
Delivery:
Instant Download
⚙️ Engine Specifications
Primary Engine
Engine Type:
Inline 4-cylinder, OHV (Overhead Valve)
Displacement:
1200cc (1.2 Litre) - specifically 1296cc for later models, but the manual covers the 1200cc designation.
Performance
Horsepower 1200:
Approx. 38-40 bhp (net) at 4200 rpm for the 1200 model.
Horsepower 12-50:
Approx. 45-48 bhp (net) at 4750 rpm for the 12-50 model (higher compression, twin carbs).
Torque:
Approx. 64-67 lb-ft at 2500 rpm for the 1200 model.
Fuel System
Carburetion:
Single Zenith Stromberg (or Solex) downdraft carburettor for 1200; Twin Zenith Stromberg (or SU) for 12-50 variant.
🔧 Transmission
Standard
Transmission Type:
4-speed manual synchromesh gearbox (on all forward gears from late 1960).
Optional
Overdrive:
Optional Laycock de Normanville overdrive available on some models (usually 4th gear).
Features
Clutch Type:
Single dry plate, hydraulically operated clutch.
📐 Dimensions
Exterior
Wheelbase:
Approximately 82 inches (2083 mm)
Length:
Approximately 150 inches (3810 mm)
Width:
Approximately 59 inches (1499 mm)
Height:
Approximately 51 inches (1295 mm)
Weights
Curb Weight:
Approx. 1700-1850 lbs (770-840 kg) depending on body style and equipment.
🛡️ Safety Features
Ratings
Crash Safety Era:
Designed in an era before stringent modern crash testing; features a robust chassis but lacks modern safety crumple zones.
Active Features
Braking System Type:
Hydraulic drum brakes on all wheels for most of the production run. Front discs were introduced on some later variants.
Passive Features
Seatbelts:
Not standard on early models; became available as an option or standard on later versions.
Body Construction:
Monocoque construction offering reasonable rigidity for its time.
💡 Technology Features
Infotainment
Radio System:
Optional factory or dealer-fitted radios, typically AM band.
Driver Assistance
Driver Aid Features:
None by modern standards; basic instrumentation and mechanical controls.
Connectivity
Connectivity Options:
Not applicable.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000 miles or 6 months.
Grease Points Interval:
Regular lubrication of king pins, shackle pins, and other chassis points every 1,000-3,000 miles.
Fluid Specifications
Engine Oil Grade:
SAE 20W/50 or 10W/30 depending on climate and engine condition (refer to manual for specific recommendations).
Coolant Type:
Water with anti-freeze (glycol-based) in appropriate mixture.
Brake Fluid Type:
DOT 3 or DOT 4 (glycol-based) hydraulic brake fluid.
Gearbox Oil Type:
API GL-4, SAE 90 EP (Extreme Pressure) gear oil.
Known Issues
Rust Susceptibility:
Prone to corrosion in sills, wheel arches, floor pans, and door bottoms due to age and materials.
Engine Wear:
Potential for worn valve guides, piston rings, and bearings, particularly on higher mileage or poorly maintained engines.
Electrical Gremlins:
Older wiring harnesses can degrade, leading to intermittent electrical faults.
Suspension Wear:
King pins, trunnions, and bushings in the suspension and steering can wear, leading to looseness and poor handling.
📚 Vehicle History
Brand Heritage
Manufacturer Origin:
United Kingdom
Model Evolution
Key Development Points:
Launched in 1959, it featured independent front suspension and a monocoque body. Engine capacity increased from 997cc to 1200cc, and later to 1296cc. The 12-50 variant offered improved performance with twin carburetors.
Production
Production Period:
1959 - 1971
Assembly Locations:
Coventry, England

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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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