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...
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.
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