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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

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Vehicle data plateRef 426567
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
Sub Model:
1200 / 12/50
Codes
Product Name:
Triumph Herald 1200 12/50 1959-1971 Repair Service Manual PDF
👋 Introduction
Market Position
Target Audience:
Mechanical technicians and Triumph Herald owners who perform their own maintenance and repairs.
Competitive Analysis
Value Proposition:
Provides authorized dealer-level service information, enabling cost savings on repairs and building confidence in maintenance.
Key Features
Accuracy Assurance:
Endeavors to ensure the accuracy of information, aiming to be a complete service manual for any repair needs.
Emphasis On Safety:
Highlights the importance of safety equipment and precautions, including the use of torque wrenches.
Emphasis On Special Tools:
Notes the mention of and illustration of special Triumph tools for specific tasks.
Warning Symbols:
Uses WARNING, CAUTION, and NOTE symbols to emphasize critical information.
📋 Manual Details
Coverage Areas
Model Years Covered:
1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
Page Count
Page Count:
415
Manual Type
Manual Type:
Workshop Service Manual / Repair Manual
Language
Language:
English
Format
File Format:
PDF
📖 Manual Coverage
Systems Covered
Engine:
Detailed repair and overhaul procedures for the Triumph Herald engine. Includes tune-ups, diagnostics, and component disassembly/assembly.
Fuel System:
Comprehensive coverage of the fuel system, including carburetor adjustments, fuel pump, fuel lines, and tank maintenance.
Ignition System:
Instructions for the ignition system, including distributor, coil, spark plugs, and timing adjustments.
Lubrication System:
Details on the lubrication system, including oil pump, oil filter, and lubrication points.
Cooling System:
Procedures for the cooling system, including radiator, water pump, thermostat, and coolant specifications.
Exhaust System:
Information on the exhaust system, including manifold, pipes, and muffler repairs.
Electrical System:
In-depth coverage of the electrical system, including wiring diagrams, charging system, lighting, starting system, and instrumentation.
Transmission:
Detailed procedures for transmission removal, installation, overhaul, and maintenance, including clutch system.
Drive Axle And Drivetrain:
Information on drive shafts, universal joints, and rear axle assembly.
Suspension System:
Coverage of front and rear suspension, including kingpins, wishbones, springs, and shock absorbers.
Steering System:
Procedures for steering box, steering column, and linkages.
Brake System:
Detailed instructions for hydraulic brake system, including master cylinder, wheel cylinders, brake shoes, drums, and hydraulic lines.
Bodywork:
Repair and maintenance procedures for the body panels, doors, windows, and interior trim.
Chassis And Frame:
Information related to the chassis structure and any frame components.
Heating And Ventilation:
Procedures for the heating and ventilation systems.
Proprietary Components:
Includes instructions for proprietary components as provided by their respective manufacturers, enhancing understanding of overall car performance.
Procedures Included
Routine Maintenance:
Detailed procedures for routine maintenance tasks.
Servicing:
Comprehensive servicing information.
Diagnostics:
Troubleshooting and diagnostic procedures for identifying and resolving common issues.
Repair:
Step-by-step repair instructions for virtually any component or system.
Overhaul:
Complete overhaul procedures for major components like the engine and transmission.
Assembly Disassembly:
Detailed instructions for assembly and disassembly of all major vehicle assemblies.
Removal Installation:
Procedures for the removal and installation of various components and systems.
Tune Ups:
Specific guidance on performing tune-ups to optimize engine performance.
Adjustments:
Procedures for making various adjustments, such as carburetor, ignition timing, and valve clearances.
Troubleshooting Guides:
Includes guides to assist technicians in diagnosing and resolving problems.
Wiring Diagrams:
Essential electrical wiring diagrams for the vehicle.
Special Tool Identification:
Identifies and illustrates special tools recommended or required for specific adjustments or repairs.
Technical Depth
Depth:
Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls. Assumes familiarity with general automotive practices but details specific Triumph Herald aspects.
📊 Manual Specifications
File Format
File Format:
PDF
Print Quality
Printability:
Yes, printable
Binding Type
Binding Type:
Digital (PDF via email delivery)
Paper Type
Paper Type:
Not Applicable (Digital)
Delivery Method
Delivery:
Fast and Free Electronic Delivery via Email
⚙️ Engine Specifications
Primary Engine
Engine Type:
Inline 4-cylinder OHV (Overhead Valve)
Engine Displacement:
1200cc (approximately 73.2 cubic inches)
Performance
Horsepower:
Approximately 40-48 bhp (Brake Horsepower), depending on specific variant and tuning.
Torque:
Specifications for torque output will be detailed within the manual.
Fuel System
Carburetor:
Typically a single SU or Zenith-Stromberg downdraft carburetor. Specific models and jetting details will be in the manual.
Fuel Type:
Leaded or Unleaded gasoline (depending on original or modified specifications).
Engine Details
Block Material:
Cast Iron
Cylinder Head Material:
Cast Iron
Bore X Stroke:
Specifications detailed in manual (e.g., 73.7mm x 72.4mm for standard 1200).
Compression Ratio:
Details specific to 1200 and 12/50 variants will be in the manual.
🔧 Transmission
Standard
Transmission Type:
4-speed manual gearbox
Optional
Automatic Transmission:
Not typically offered on these models.
Features
Gear Ratios:
Specific gear ratios will be listed within the manual.
Clutch
Clutch Type:
Single dry plate, hydraulically operated.
Transmission Fluid
Fluid Specification:
Manual will specify correct transmission fluid (e.g., GL4 rated gear oil).
📐 Dimensions
Exterior
Wheelbase:
Approximately 2273 mm (89.5 inches)
Length:
Approximately 3900 mm (153.5 inches)
Width:
Approximately 1524 mm (60 inches)
Height:
Approximately 1270 mm (50 inches) to the roofline.
Weights
Curb Weight:
Approximately 810-850 kg (1785-1875 lbs), depending on body style.
Gross Vehicle Weight Rating:
Specifications will be in the manual.
Wheels Tires
Wheel Size:
Typically 13-inch or 14-inch wheels.
Tire Size:
Commonly 5.50x13 or 5.70x13. Specifics in manual.
Bolt Pattern:
4 x 101.6 mm (4 x 4 inches)
🛡️ Safety Features
Ratings
Safety Ratings:
Vehicle safety standards of the era were different. Manual focuses on mechanical integrity and repair rather than formal ratings.
Active Features
Brakes:
Hydraulic front disc brakes (often Girling) and rear drum brakes.
Passive Features
Seat Belts:
Seat belts were often optional or not standard in early models; the manual may cover installation or replacement.
Chassis Design:
Monocoque construction with a separate floor pan and outriggers.
💡 Technology Features
Infotainment
Radio:
Optional factory or aftermarket radio installations. Manual may cover wiring for audio systems.
Driver Assistance
Driver Assistance Systems:
No advanced driver assistance systems typical of modern vehicles.
Connectivity
Connectivity Features:
Basic electrical systems, no modern connectivity features.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Manual will detail specific mileage/time intervals for oil and filter changes.
Tune Up Interval:
Manual will specify recommended intervals for tune-ups.
Fluid Specifications
Engine Oil:
Manual will specify SAE viscosity grade and API service classification (e.g., SAE 20W/50, API SC or SD).
Coolant:
Manual will specify the correct type of antifreeze/coolant.
Brake Fluid:
Manual will specify DOT rating (likely DOT 3 or DOT 4).
Grease Points:
Manual will list all lubrication points and the recommended grease type.
Known Issues
Common Wear Items:
Items like kingpins, suspension bushes, clutch, and brake components are common wear items, with repair procedures detailed in the manual.
Rust Pronation:
Older British cars are prone to rust; the manual may offer advice on bodywork maintenance or repair.
📚 Vehicle History
Brand Heritage
Manufacturer:
Triumph Motor Company, a historic British marque.
Model Evolution
Introduction Year:
1959
Key Variants:
Herald 948, Herald 1200, Herald 12/50, Herald 13/60. This manual specifically covers 1200 and 12/50.
Production
Production Period:
1959-1971
Production Location:
Coventry, England (Standard-Triumph)
🏆 Awards & Recognition
Recognitions
Manual Recognition:
This manual is presented as a comprehensive resource that allows users to perform repairs like a professional technician, implying a high standard of guidance.

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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