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Manual Coverage
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Systems Covered
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Engine Mechanical:
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Engine assembly, disassembly, component inspection, repair, piston rings, bearings, cylinder head, valve train, crankshaft, camshaft, timing, oil pump, cooling system, lubrication.
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Engine Fuel System:
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Carburetor overhaul and adjustment (Stromberg, SU), fuel injection systems (where applicable), fuel pump, fuel filter, fuel lines, emissions control systems.
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Engine Ignition System:
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Distributor, ignition timing, spark plugs, ignition coils, electronic ignition components.
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Transmission Manual:
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Gearbox disassembly, inspection, repair, clutch assembly, flywheel, driveshafts, universal joints, gearbox oil specifications.
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Transmission Automatic:
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Details on automatic transmission systems, if applicable to specific models covered. (Note: Many Triumph models were manual).
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Suspension:
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Front suspension (independent, often with wishbones and coil springs), rear suspension (live axle, leaf springs or trailing arms), shock absorbers, bushings, alignment specifications.
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Steering:
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Steering rack, steering column, linkages, power steering systems (if equipped), steering wheel removal, lubrication.
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Brakes:
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Brake system diagnosis, hydraulic system components (master cylinder, wheel cylinders, calipers, brake lines, brake fluid), disc brake servicing, drum brake servicing, parking brake system.
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Electrical System:
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Wiring diagrams, battery, charging system (alternator/dynamo), starting system (starter motor), lighting system (headlights, taillights, indicators), instrumentation, fuses, relays, switches, ignition switch, wiper system.
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Bodywork:
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Body panel removal and installation, door mechanisms, window regulators, convertible top mechanisms, body shell repair, jacking points, underbody protection, interior trim.
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Heating And Ventilation:
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Heater matrix, blower motor, ducting, air vents, demister system.
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Procedures Included
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Routine Maintenance:
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Oil changes, filter replacements, spark plug checks, ignition timing adjustment, coolant checks, brake fluid changes, lubrication points, general inspection.
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Troubleshooting:
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Diagnostic charts and procedures for common starting, running, electrical, and braking issues. Fault finding based on symptoms.
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Component Overhaul:
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Detailed step-by-step instructions for rebuilding major components like engines, transmissions, carburetors, and brake systems.
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Repair And Replacement:
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Instructions for replacing worn or damaged parts, including suspension arms, steering components, exhaust systems, and body panels.
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Adjustment Procedures:
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Specific procedures for adjusting carburetors, ignition timing, clutch engagement, and brake systems to factory specifications.
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Electrical Diagnostics:
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Schematic interpretation, testing of electrical circuits, component testing, and fault diagnosis using multimeters.
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Technical Depth
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Diagnostic Capabilities:
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Advanced diagnostic procedures for engine performance, electrical faults, and mechanical issues. Includes symptom-based troubleshooting guides.
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Rebuilding Specifications:
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Detailed specifications for engine and transmission rebuilds, including clearances, torque values, and material specifications.
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Expert Knowledge:
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Provides insights and tips from experienced Triumph technicians, covering nuances specific to the brand's engineering.
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Engine Specifications
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Primary Engine
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Engine Types Covered:
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Inline-4 Cylinder (e.g., Herald, Spitfire, Dolomite 1300/1500), Inline-6 Cylinder (e.g., GT6, Stag), OHV (Overhead Valve) and OHC (Overhead Camshaft) designs.
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Performance
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Common Engine Variants:
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1.1L, 1.3L, 1.5L (Herald/Dolomite), 1.3L, 1.5L (Spitfire), 2.0L Inline-6 (GT6), 3.0L V8 (Stag – note: manual may focus more on Inline-6 due to availability).
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Horsepower Range:
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Approximately 40-100 bhp depending on engine size and tune.
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Torque Range:
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Approximately 55-120 lb-ft depending on engine size and tune.
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Fuel System
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Carburetion:
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Dual SU carburetors (e.g., Stromberg CD series) common on performance models, single or twin Stromberg/SU on smaller engines. Specific jet sizes and needle types detailed.
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Fuel Type:
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Historically designed for leaded or unleaded gasoline (manual will specify appropriate grades and octane ratings). Fuel pump types (mechanical, electric).
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically every 3,000 miles or 6 months for older vehicles. Manual will provide specific recommendations based on oil type and usage.
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Tune Up Interval:
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Spark plug gap checks, ignition timing adjustments, and carburetor adjustments recommended annually or every 6,000-10,000 miles.
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Coolant Change Interval:
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Every 2 years or as per glycol type. Manual specifies appropriate coolant types and additives.
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Fluid Specifications
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Engine Oil Type:
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API SG or SH rated oils, SAE 20W-50 or 10W-40 common for classic engines. Manual specifies viscosity and API rating.
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Brake Fluid Type:
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DOT 3 or DOT 4 brake fluid. Manual will detail flush and bleeding procedures.
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Coolant Specification:
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Ethylene glycol-based antifreeze. Manual will specify mix ratios and corrosion inhibitor requirements.
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Known Issues
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Engine Oil Leaks:
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Common due to age and rubber seal deterioration. Manual details gasket and seal replacement procedures.
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Carburetor Icing Or Gumming:
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Can occur with infrequent use or poor fuel quality. Manual provides cleaning and rebuilding steps.
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Rust And Corrosion:
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A common issue with British cars of this era, particularly in areas prone to salt. Manual covers body repair and rust prevention.
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Electrical Gremlins:
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Wiring can degrade over time. Manual's wiring diagrams are critical for diagnosis.
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Vehicle History
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Brand Heritage
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Manufacturer Origin:
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British, part of the Leyland Motor Corporation for much of this period. Known for producing sporty, affordable cars.
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Model Evolution
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Triumph Herald:
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Produced 1959-1971. Known for its innovative chassis design and unique styling. Available in various body styles.
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Triumph Spitfire:
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Produced 1962-1980. A small, affordable British sports car with body-on-chassis construction, evolving through several 'Mk' versions.
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Triumph Vitesse:
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Produced 1962-1971. Essentially a GT version of the Herald with a more powerful 6-cylinder engine.
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Triumph Gt6:
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Produced 1963-1973. A sporty coupe based on the Spitfire chassis but featuring the 2.0L straight-six engine from the Vitesse and a fixed roof.
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Triumph Stag:
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Produced 1970-1977. A four-seater grand tourer known for its luxurious styling and the powerful 3.0L V8 engine. Developed by Triumph's design studio.
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Triumph Dolomite:
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Produced 1970-1980. A range of executive saloons and sporty coupes, most famously the Dolomite Sprint with its 16-valve OHC engine.
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Triumph Tr Series:
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Includes TR4, TR5 (fuel-injected), TR6. Iconic British sports cars known for their robust engineering and sporting performance.
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Triumph Acclaim:
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Produced 1981-1984. A badge-engineered Honda Ballade, representing Triumph's final passenger car model before the marque's demise.
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Production
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Manufacturing Locations:
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Primarily Coventry, England. Some models may have had assembly or components from other Leyland plants.
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