1973-1978 Triumph Bonneville T140E / T140V / TR7V Motorcycle Workshop Manual

Triumph T140E, T140V, and TR7V Technical Workshop Documentation

• Built for owners and workshops servicing the 1973–1978 Triumph Bonneville 750 and Tiger 750, including T140E, T140V, and TR7V variants
• Original OEM publication P/N 99-0983, published May 1973
• Contains 40 detailed technical sections covering engine, gearbox, and electrical systems
• Delivers essential engine clearance data including 0.005 in. valve guide clearance and 0.004 in. output shaft radial play
• Documents the complete unit construction 750cc twin-cylinder engine and five-speed gearbox specifications
• Stored against your account so you can retrieve it after a hard-drive loss
• File link appears in your order confirmation straight away
• This official 1973 manual remains the reference standard for the Meriden-era 750 twins, documenting the specific unit construction and ignition timing requirements for the range

Manual Content and Coverage

This Triumph T140E, T140V, and TR7V workshop manual details the structural maintenance and assembly for the 1973–1978 750 unit construction twins. The documentation provides assembly and disassembly sequences for the dry-sump engine, double-plunger oil pump, and primary drive system. The internal gearbox layout, gear selection mechanisms, and clutch operating assemblies are explained alongside electrical system schematics for the ignition and lighting configurations. Routine maintenance intervals for 1500, 3000, and 6000-mile service checks define the frequency for oil changes, point adjustments, and chain maintenance tasks.

Engine and Transmission Data Highlights

Technical specifications are categorized for quick reference throughout the manual. Crankcase assembly requires careful attention to the main bearing torques of 200 in-lbs, while piston and cylinder bore grading are documented to ensure correct clearances. The T140E Bonneville 750 engine features a compression ratio of 7:1. Timing marks for early models are clearly defined to assist in setting the ignition for the 12-volt system. The what an OEM service publication covers includes detailed tolerances for main shafts, lay shafts, and selector forks to ensure reliable operation. Official 217-page Triumph workshop manual covering the 1973–1978 T140E, T140V, and TR7V series, documenting engine, chassis, electrical, and transmission technical data for the Meriden-built 750cc twins.

Document Reference: Publication Part No. 99-0983, published May 1973