The Triumph TRW 500, produced between 1950 and 1964, represents a robust piece of British engineering, built upon the brand's renowned OHV Parallel-Twin engine design. This model, a civilian adaptation of a military motorcycle, offers a blend of performance and reliability characteristic of its era. With its 499cc engine, 4-speed gearbox, and chain drive, the TRW 500 was engineered for dependable operation, appealing to riders seeking a classic motorcycle experience. This comprehensive service and repair manual provides essential information for the maintenance and restoration of your Triumph TRW 500. Covering critical systems such as the engine, carburetter, gearbox, front fork, wheels, and both BTH and Lucas electrical components, this 164-page guide details regular servicing, troubleshooting, component replacement, and complete rebuild procedures. Featuring step-by-step instructions, detailed diagrams, and technical specifications, this manual is an invaluable resource for owners and technicians alike, offering a cost-effective alternative to professional servicing and ensuring the longevity of your vintage Triumph. 🏷️ Basic Information Identification Make: Triumph Model: TRW 500 Year Range: 1950-1964 Engine Type: 500cc OHV Parallel-Twin 👋 Introduction Market Position Target Audience: Triumph TRW 500 owners, mechanics, and vintage motorcycle enthusiasts Competitive Analysis Value Proposition: Comprehensive and cost-effective alternative to professional workshop servicing Key Features Comprehensiveness: The most comprehensive service, maintenance, and repair manual available for the Triumph TRW 500 Ease Of Use: Step-by-step instructions and exploded views simplify complex repairs 📋 Manual Details Coverage Areas Page Count: 164 Manual Type: Service and Repair Manual Language: English Format: PDF Download (Self-Extracting) 📖 Manual Coverage Systems Covered Engine: Complete overhaul, troubleshooting, and component replacement Carburetter: Adjustment, cleaning, and rebuild of common carburettor types Gearbox: Disassembly, assembly, and maintenance of the gearbox Front Fork: Telescopic front fork service and repair Wheels: Spoke wheel maintenance, bearing service, and tire replacement Electrical System Bth: BTH magneto and associated ignition components Electrical System Lucas: Lucas dynamo, lighting, and battery charging systems Procedures Included Maintenance: Regular servicing, lubrication, and adjustments Troubleshooting: Diagnostic procedures for common performance issues Repair: Step-by-step repair instructions for all major components Exploded Views: Detailed diagrams illustrating component relationships and assembly Technical Depth Diagnostic Capabilities: Advanced troubleshooting and fault finding for both mechanical and electrical systems Rebuild Instructions: Comprehensive instructions for complete engine and gearbox rebuilds Part Identification: Detailed component identification and assembly order 📊 Manual Specifications File Format File Type: PDF Extraction Method: Self-executing extractor for faster download and extraction Searchability: Bookmarked for quick navigation Printability: Printable PDF ⚙️ Engine Specifications Primary Engine Engine Displacement: 499cc (30.4 cubic inches) Engine Configuration: OHV Parallel-Twin Bore X Stroke: 63mm x 80mm (approx.) Compression Ratio: Typical 6.5:1 or 7.0:1 (depending on variant) Performance Horsepower: Approximately 27-30 bhp at 6,000 rpm (varies by tuning and year) Torque: Not explicitly stated in product info, but substantial for its era. Fuel System Carburetor Type: Typically single Amal (e.g., Monobloc) or similar British carburetors. Fuel Type: Lead-replacement or high-octane gasoline (depending on original specification and modern fuel availability). 🔧 Transmission Standard Gearbox Type: 4-speed constant mesh Optional Clutch Type: Dry, multi-plate Features Shift Mechanism: Positive stop foot change Final Drive: Chain drive 📐 Dimensions Exterior Wheelbase: Approx. 55 inches (1397 mm) Weights Dry Weight: Approx. 360-380 lbs (163-172 kg) 🛡️ Safety Features Ratings Historical Context: Safety standards were significantly different in this era. Modern safety ratings are not applicable. Active Features Brakes: Drum brakes front and rear Passive Features Lighting: Basic headlamp, tail lamp, and brake light (Lucas system coverage) 💡 Technology Features Infotainment Instrumentation: Mechanical speedometer and warning lamps (if fitted) Driver Assistance N/A: Not applicable to this era of motorcycle Connectivity N/A: Not applicable to this era of motorcycle 🔧 Maintenance Service Intervals Oil Change: Recommended every 1,000-1,500 miles (manual will specify exact interval and procedure) Valve Adjustment: Recommended at regular intervals (manual will detail procedure and clearance) Fluid Specifications Engine Oil: Typically SAE 20W-50 or SAE 30 monograde oil (specific recommendation in manual) Gearbox Oil: Motorcycle-specific gearbox oil or suitable EP gear oil (specific recommendation in manual) Known Issues Oil Leaks: Common in vintage British motorcycles due to sealing materials and design. Electrical System: Wear and tear on Lucas dynamo and regulator systems, BTH magneto maintenance. Carburetor Tuning: Requires careful tuning for optimal performance and reliability. 📚 Vehicle History Brand Heritage Manufacturer: Triumph Engineering Co. Ltd., Meriden, Warwickshire, England Model Evolution Trw Origin: The TRW 500 was a civilian version of the military TRW 500cc motorcycle, developed for post-war civilian use. Engine Development: Utilized Triumph's robust and popular OHV parallel-twin engine design. Production Production Period: 1950s through the early 1960s 🏆 Awards & Recognition Recognitions Historical Impact: Triumph motorcycles of this era were renowned for their performance and handling, contributing to the brand's racing heritage.