This manual covers the Triumph Bonneville T140V and T140E motorcycles produced between 1973 and 1988. These iconic British machines, powered by a 744cc air-cooled parallel-twin engine, are renowned for their classic styling and enduring appeal. The T140 series represents a significant evolution of the legendary Bonneville lineage, incorporating features that balanced performance with the evolving demands of the era. This manual serves as an essential resource for maintaining and repairing these historically significant motorcycles, offering comprehensive guidance for enthusiasts and technicians alike.

The purpose of this service repair shop manual is to provide detailed instructions and technical specifications for the proper maintenance, troubleshooting, and repair of the Triumph Bonneville T140V and T140E. It covers all major systems, including the engine, transmission, electrical components, chassis, and suspension. With step-by-step procedures, diagnostic information, and clear diagrams, this manual empowers owners and mechanics to ensure the longevity and optimal performance of their classic Triumph motorcycles, addressing common issues and facilitating complex overhauls.