The Triumph Trophy T100, produced between 1938 and 1974, represents a significant lineage in British motorcycle engineering. Known for its parallel-twin cylinder, four-stroke engine and robust construction, the T100 served as the foundation for numerous iconic Triumph models. This versatile machine, with variants such as the Daytona, Tiger, and Bonneville, offered a blend of performance and reliability, making it a popular choice for both everyday riding and competitive events. Its classic styling and mechanical character continue to be celebrated by enthusiasts worldwide.
This comprehensive Factory Service Workshop Repair Manual provides detailed information for the Triumph Trophy T100 and its associated variants from 1938 to 1974. It covers all essential aspects of maintenance, repair, and troubleshooting, including complete engine overhauls, transmission and clutch adjustments, electrical system diagnostics, chassis and suspension servicing, and brake system maintenance. With hundreds of photos, detailed illustrations, and numbered steps, this manual is an invaluable resource for do-it-yourself enthusiasts, classic motorcycle owners, and experienced mechanics seeking to preserve and maintain their Triumph T100.
Model Variants Covered:
Daytona, Tiger, Bonneville, Trophy Trail, T100 A, C, R, RR, RS, S, SC, SR, SS, C
Target Audience:
Do-it-yourself enthusiasts, classic motorcycle owners, experienced mechanics
Value Proposition:
Inexpensive source for essential repair and service information, saving on professional labor costs.
Instruction Format:
Numbered steps, detailed substeps, bold figure numbers for easy illustration matching
Visual Aids:
Hundreds of photos, detailed illustrations, drawings, enlarged insets for close-up part examination
Safety Information:
Notes, cautions, and warnings highlight critical information throughout
Navigability:
Numbered table of contents for quick information retrieval
Delivery:
Instant download, no shipping fees or waiting time
Model Years Covered:
1938-1974
Estimated Pages:
Extensive (Full Factory Manual)
Type:
Factory Service Workshop Repair Manual
Engine:
Complete overhaul, tuning, ignition system, carburetor adjustment, lubrication
Transmission:
Gearbox disassembly and assembly, clutch operation, gear shift mechanisms
Electrical:
Wiring diagrams, lighting, charging system, ignition timing, troubleshooting
Chassis And Suspension:
Front fork, rear suspension, wheel bearings, steering components
Brakes:
Drum brake servicing, linkage adjustment
Bodywork And Frame:
Frame inspection, fuel tank, fenders, seat mounting
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment
Repair:
Step-by-step repair instructions for all major components
Troubleshooting:
Diagnostic procedures for common problems, electrical fault finding
Assembly Disassembly:
Complete disassembly and reassembly guides
Depth:
Comprehensive: from basic adjustments to complete engine rebuilds
Searchability:
Searchable text content
Printability:
Fully printable (individual pages or entire manual)
Binding:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Engine Type:
Parallel-twin cylinder, four-stroke (OHV)
Displacement Cc:
Approximately 498cc (Trophy 500 derived)
Bore Stroke:
Typically 63mm x 80mm (varies slightly by specific T100 iteration)
Horsepower Hp:
Approx. 26-30 HP @ 6,000 RPM (model dependent)
Torque Lb-Ft:
Approx. 28-30 lb-ft @ 4,500 RPM (model dependent)
Carburetor Type:
Single or Twin Amal concentric carburetors (e.g., 375/376 series)
Fuel Type:
Leaded gasoline (appropriate octane rating for the era)
Ignition System:
Positive-earth magneto ignition or coil-and-distributor systems
Lubrication System:
Wet sump lubrication
Transmission Type:
4-speed constant mesh gearbox
Optional Gearbox:
N/A (4-speed was standard for the T100)
Clutch Type:
Multi-plate, wet clutch, cable operated
Wheelbase Inches:
Approx. 54-56 inches (model dependent)
Seat Height Inches:
Approx. 30-32 inches (model dependent)
Dry Weight Lbs:
Approx. 350-380 lbs (model dependent)
Crash Test Ratings:
N/A (Motorcycle safety standards were less formalized in the era)
Braking System:
Drum brakes front and rear
Lighting:
Headlight, taillight, brake light, indicators (depending on market regulations and year)
Infotainment System:
N/A (Vintage motorcycle, technology focused on mechanical function)
Assistance Systems:
N/A (Vintage motorcycle)
Connectivity Features:
N/A (Vintage motorcycle)
Oil Change Interval:
Typically every 1,000 - 2,000 miles (refer to manual for exact spec based on year)
Spark Plug Replacement:
Intervals vary, but typically checked/cleaned at oil changes and replaced periodically (refer to manual)
Chain Lubrication:
Frequent lubrication is critical, often recommended every 300-500 miles or after riding in wet conditions.
Engine Oil Type:
SAE 20W-50 or SAE 30 (mineral oil, often with ZDDP additive for older engines)
Engine Oil Capacity Quarts:
Approx. 4-5 US pints (2.3-2.8 liters) (varies by sump)
Gearbox Oil Type:
SAE 90 EP (Extreme Pressure) gear oil or specific motorcycle gearbox oil
Gearbox Oil Capacity Pints:
Approx. 1 UK pint (0.57 liters) (check dipstick/level plug)
Oil Leaks:
Common from crankcase joints, valve guides, and primary chaincase.
Ignition Timing:
Can drift, requiring regular checks and adjustments for optimal performance.
Carburetor Tuning:
Amal carbs can require frequent fine-tuning due to wear and environmental factors.
Electrical Connections:
Corrosion and loose connections can lead to intermittent faults.
Gearbox Engagement:
False neutrals or difficulty engaging gears can occur with worn selector mechanisms or incorrect oil levels.
Manufacturer:
Triumph Engineering Co. Ltd., Meriden, Warwickshire, England
Development Period:
The T100 was a significant model in Triumph's history, evolving from earlier 350cc and 500cc twins.
Key Variants:
The T100 served as the basis for many iconic Triumph models, including performance variants and those that became famous in racing and popular culture.
Production Span:
1938-1974 (as indicated by manual coverage, though specific T100 naming and variants evolved)
Manufacturing Location:
Meriden, England
Brand Legacy:
Triumph motorcycles, including the T100 lineage, are celebrated for their contribution to motorcycling history and iconic status.
User Satisfaction:
Highly regarded by enthusiasts for their classic styling, performance, and mechanical character.
Certification Type:
N/A (Manual is a factual documentation of a manufactured product)