Production Years Covered:
1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
Niche:
Classic British sports saloon, appealing to enthusiasts and restorers.
Competitors:
Ford Anglia, Austin Cambridge, Morris Oxford, Vauxhall Victor.
Design Philosophy:
Unique 'Y'-frame chassis with separate body panels, facilitating repairs and allowing for diverse body styles (saloon, coupe, convertible, estate).
Target Audience:
Owners of Triumph Herald vehicles, mechanics, automotive restoration specialists, and DIY enthusiasts.
Engine System:
Detailed procedures for engine overhaul, tuning, troubleshooting, and component replacement. Includes ignition, fuel, cooling, and lubrication systems.
Transmission System:
Coverage for gearbox removal, repair, adjustment, and clutch system servicing.
Suspension Steering System:
Information on front and rear suspension components, steering gear, wheel alignment, and related adjustments.
Braking System:
Detailed instructions for hydraulic brake system maintenance, including master cylinder, wheel cylinders, brake shoes/pads, and adjustment procedures.
Electrical System:
Wiring diagrams, troubleshooting for lighting, ignition, starting, charging systems, and accessory circuits.
Bodywork Chassis:
Guidance on body panel removal/installation, door mechanisms, window winding, and chassis maintenance.
Fuel System:
Details on fuel tank, lines, carburetor (likely Stromberg or SU), and fuel pump servicing.
Cooling System:
Information on radiator, water pump, thermostat, and hoses for proper engine temperature regulation.
Chassis Frame:
Specific attention to the 'Y' frame construction, including inspection, potential repairs, and mounting points.
Maintenance:
Periodic maintenance schedules, fluid changes, lubrication points, filter replacements.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults, with symptom-based troubleshooting guides.
Repair Rebuild:
Step-by-step instructions for disassembling, repairing, and reassembling major vehicle components.
Adjustment:
Precise instructions for adjusting ignition timing, carburetors, brakes, clutch, and suspension.
Installation Removal:
Detailed guides for removing and installing components, including torque specifications and necessary precautions.
Wheel Alignment:
Detailed steps for checking and adjusting wheel alignment parameters crucial for handling.
Paint Bodywork Repair:
Guidance on body panel alignment and repair techniques, acknowledging the separate panel design.
Depth:
Comprehensive, covering everything from basic tune-ups to complete engine and transmission rebuilds. Suitable for both professional mechanics and experienced DIY enthusiasts.
Diagrams Illustrations:
Features detailed pictorial diagrams, exploded views, and photographs to guide users through procedures.
Special Tools:
References specific Triumph special service tools, including illustrations of their usage.
Specifications Data:
Includes service data, factory specifications, wear limits, and tightening torques for all critical fasteners and components.
Diagnostic Tools:
Information on using basic diagnostic tools and techniques appropriate for the vehicle's era.
Digital Quality:
High-quality PDF, ensuring clear readability of text and images.
Searchability:
Likely text-searchable, enhancing user experience for finding specific information.
Download Speed Indication:
Instant download available upon successful payment.
Print Ability:
Pages are printable, allowing for physical copies for workshop use.
Binding:
N/A (Digital Format)
Paper Type:
N/A (Digital Format)
Engine Type:
Inline 4-cylinder, overhead valve (OHV)
Displacement:
1147 cc (for 1200 model), potentially slightly larger for 12/50 if referring to a specific variant.
Horsepower:
Approximately 40-50 bhp (depending on specific tune and model variant, 12/50 may have slightly more).
Torque:
Likely in the range of 60-70 lb-ft.
Carburetion:
Single or twin Stromberg or SU carburetors, depending on the specific model and market.
Fuel Type:
Leaded or unleaded gasoline (depending on year and potential modifications).
Oil Change:
Typically every 3,000 miles or 6 months, though consult manual for exact intervals.
Grease Points:
Regular lubrication of suspension and steering components is crucial.
Engine Oil:
SAE 20W-50 or 20W-40, depending on ambient temperature (consult manual for specifics, e.g., Castrol GTX or equivalent).
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (check manual for exact type).
Gearbox Oil:
Hypoid gear oil (e.g., GL-4) with appropriate viscosity for climate.
Rust Corrosion:
Common issue with many vehicles of this era, particularly around sills, wheel arches, and floor pans. The separate body panels can trap moisture.
Body Mounting:
The frame to body mounts can deteriorate, leading to squeaks and rattles. The 'Y' frame itself can also be susceptible to corrosion.
Electrical System:
Aging wiring harnesses and connections can lead to intermittent electrical faults.
Carburetor Tuning:
Carburetors require regular adjustment to maintain smooth running and optimal performance.
