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Triumph

Triumph Herald 1200 12-50 1966 Full Service Repair Manual

Triumph Herald 1200 12-50 1966 Full Service Repair Manual

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Vehicle data plateRef 449014
Brand
Triumph
Vehicle
Cars
Models covered
Herald, Herald 12-50, Herald 1200
Years
1966
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 β€” 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:
1966
Variant:
1200 12-50
Codes
Engine Code Type:
Likely based on engine displacement and overhead valve configuration
πŸ‘‹ Introduction
Market Position
Target Audience:
Enthusiasts, owners, and mechanics specializing in or working on classic British sports cars and saloons.
Competitive Analysis
Value Proposition:
Provides comprehensive, dealership-level repair and maintenance information at a fraction of the cost of original manuals or professional labor.
Key Features
Ease Of Use:
Numbered instructions, bold figure numbers, detailed illustrations, and a structured table of contents facilitate easy navigation and understanding.
Accessibility:
Instant download eliminates shipping costs and delays, making critical information readily available.
πŸ“‹ Manual Details
Coverage Areas
Primary Coverage:
Triumph Herald 1200 and 12-50 models
Secondary Coverage:
Applicable variants and potential sub-models within the 1966 model year
Page Count
Estimated Page Count:
Detailed service manuals for this era often range from 300-600 pages, depending on the depth of coverage.
Manual Type
Type:
Full Service Repair Manual
Language
Language:
English
Format
Format:
PDF
πŸ“– Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, including cylinder head, block, pistons, crankshaft, camshaft, valve train, lubrication system, and cooling system.
Fuel System:
Carburetor (likely SU or Zenith-Stromberg) tuning, rebuilding, and fuel pump servicing.
Ignition System:
Distributor, coil, spark plugs, wiring, and timing adjustments.
Transmission:
Manual gearbox servicing, clutch replacement, and gearbox overhaul.
Drivetrain:
Driveshaft, universal joints, and rear axle servicing.
Suspension:
Front and rear suspension components, including kingpins, wishbones, springs, shock absorbers, and steering linkage.
Steering:
Steering column, steering rack, and wheel alignment.
Brakes:
Hydraulic brake system, including master cylinder, wheel cylinders, brake shoes, drums, and hydraulic lines.
Electrical System:
Wiring diagrams, dynamo/alternator charging system, starter motor, lighting, instrumentation, and accessories.
Bodywork:
Chassis, body panels, doors, hood, convertible top, and trim component repair and adjustment.
Heating And Ventilation:
Heater matrix, ducting, and airflow controls.
Procedures Included
Maintenance:
Scheduled maintenance, lubrication points, fluid changes, and tune-up procedures.
Troubleshooting:
Diagnostic charts and procedures for common issues across all systems.
Repair:
Step-by-step repair instructions for all major components and systems.
Rebuilding:
Comprehensive instructions for complete engine and gearbox rebuilds.
Refurbishment:
Guidance on restoring worn or damaged components.
Restoration:
Detailed information suitable for full vehicle restoration projects.
Electrical Diagnostics:
Detailed wiring diagrams and fault finding procedures for electrical issues.
Technical Depth
Depth:
Suitable for professional technicians and advanced DIY mechanics, covering everything from basic adjustments to full engine rebuilds.
πŸ“Š Manual Specifications
File Format
Format Details:
PDF (Portable Document Format) for universal compatibility.
Print Quality
Printability:
Full Printable - All pages can be printed on demand.
Binding Type
Binding Type:
Digital (No physical binding, as it's a download).
Paper Type
Paper Type:
N/A (Digital format).
βš™οΈ Engine Specifications
Primary Engine
Engine Type:
Inline 4-cylinder, Overhead Valve (OHV)
Displacement:
1200 cc (1.2 Liters)
Bore X Stroke:
Approximately 73.7 mm x 71.1 mm (2.90 in x 2.80 in)
Performance
Horsepower:
Approximately 48-50 bhp (Brake Horsepower) at around 4500-4800 rpm.
Torque:
Approximately 67-70 lb-ft (89-95 Nm) at around 2500-3000 rpm.
Fuel System
Carburetor:
Single SU HS2 or Zenith-Stromberg CD175 carburetor.
Fuel Type:
Leaded or Unleaded gasoline (depending on octane rating and engine tuning adjustments).
Cooling System
Cooling Method:
Water-cooled, pressurized system with a radiator and fan.
πŸ”§ Transmission
Standard
Transmission Type:
4-speed manual gearbox with optional overdrive on certain models.
Optional
Overdrive:
Laycock de Normanville overdrive unit (often switch-operated).
Features
Clutch:
Single dry plate clutch.
πŸ“ Dimensions
Exterior
Wheelbase:
Approximately 82 inches (2083 mm).
Front Track:
Approximately 48.75 inches (1238 mm).
Rear Track:
Approximately 48.5 inches (1232 mm).
Weights
Curb Weight:
Approximately 1850 - 1950 lbs (840 - 885 kg), depending on body style and equipment.
πŸ›‘οΈ Safety Features
Ratings
Crash Safety:
As a 1960s vehicle, it predates modern crash safety standards and testing protocols. No official ratings available.
Active Features
Braking System:
Front disc brakes (often 9.5-inch Girling) and rear drum brakes.
Passive Features
Seatbelts:
Likely optional or not fitted as standard in all configurations for the 1966 model year. The manual would detail installation if available.
πŸ’‘ Technology Features
Infotainment
Radio:
Optional aftermarket or period-correct radio. Manual may cover wiring for radio installation.
Driver Assistance
None:
No electronic driver assistance systems were available on this model.
Connectivity
None:
No factory connectivity features available.
πŸ”§ Maintenance
Service Intervals
Oil Change:
Typically every 3,000 miles or 6 months. Manual will specify exact interval and oil type.
Grease Points:
Regular lubrication of kingpins, suspension joints, and driveshaft U-joints is crucial. Manual will detail schedule and grease type.
Fluid Specifications
Engine Oil:
Likely a multi-grade oil such as 20W-50 or 20W-30. Manual will provide exact specification and capacity.
Coolant:
Mixture of antifreeze and water. Manual will specify the correct ratio and type.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid. Manual will specify type and capacity.
Gearbox Oil:
GL-4 Hypoid gear oil (e.g., SAE 90). Manual will specify viscosity and capacity.
Known Issues
Chassis Corrosion:
Prone to rust, especially around sills, wheel arches, and suspension mounting points, due to its construction. Manual may offer repair guidance.
Kingpin Wear:
Kingpins and their bushings are a common wear item, affecting steering and handling. Manual provides replacement procedures.
Electrical Reliability:
Older wiring looms can become brittle and corroded, leading to intermittent electrical faults. Detailed wiring diagrams in the manual are essential for diagnosis.
πŸ“š Vehicle History
Brand Heritage
Manufacturer:
Standard-Triumph (later part of British Leyland).
Model Evolution
Herald Design:
Designed by Giovanni Michelotti, known for its distinctive independent suspension and body-on-chassis construction, allowing for modularity and different body styles.
Production
Production Period:
The Triumph Herald was produced from 1959 to 1971. The 1200 and 12-50 variants were key models within this period.
πŸ† Awards & Recognition
Recognitions
Design Acclaim:
Acclaimed for its distinctive styling by Giovanni Michelotti.

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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