Welcome to the comprehensive repair service manual for the 1979 Triumph T140V Bonneville 750. This iconic classic motorcycle, a symbol of British engineering from the late 1970s, is celebrated for its distinctive styling and the legendary Bonneville nameplate. Evolving from the T120 series, the T140V features a 750cc air-cooled parallel-twin engine, a 5-speed transmission, and the robust Tritubo frame design, further enhanced by a front disc brake. This manual is designed to provide in-depth knowledge for maintaining and repairing this celebrated machine, ensuring its performance and longevity.

This manual covers a wide array of mechanical and electrical systems, offering detailed procedures for routine maintenance, troubleshooting, and complex repairs. Within its pages, you will find step-by-step instructions for engine assembly, carburetor tuning, transmission overhauls, and electrical system diagnostics, complete with essential wiring diagrams and technical specifications such as torque values and fluid capacities. Whether you are a professional technician or an experienced enthusiast, this resource is tailored to equip you with the necessary information to keep your Triumph T140V Bonneville in optimal condition.