1973 Triumph Trident T150 Service Manual

1969–1973 Triumph T150 Trident Workshop Manual

• Covers 1969–1973 Triumph T150 Trident and 1973 T150V models, including T150R and T150RV variants
• Official Triumph Engineering Co Ltd publication, Part No. 99-0963, including Supplement 00-4223 for 1973 models
• Contains 249 pages of technical specifications, exploded-view diagrams, and maintenance schedules for 750cc three-cylinder motorcycles
• Laid out for standard letter and A4 printing
• Indexed PDF search covers every chapter and appendix
• This 1973 factory workshop manual documents the transition from the 4-speed gearbox to the 1973 5-speed configuration, making it the definitive reference for late-model Trident engine service

Documentation Scope

This factory manual provides an exhaustive technical breakdown for the 1969–1973 Triumph T150 Trident series. The content transitions from general motorcycle identification and engine/frame numbering systems to detailed sub-system chapters covering the lubrication system, 3-cylinder engine internals, transmission, gearbox assembly, frame components, and the electrical system. Each section is meticulously structured to assist with engine-unit removal, cylinder head refurbishment, clutch servicing, and primary chain adjustment.

Specification and Data Highlights

Technical data is provided for all major engine and chassis components, including precise torque settings for crankshaft, connecting rod, and cylinder head fasteners. Factory-standard clearances for pistons, valve guides, and camshaft journals are clearly tabulated throughout the General Data sections. Marine-grade or high-performance engine lubrication systems are documented with oil pressure settings and recommended lubricant grades based on seasonal operation. Valve clearance for the inlet is listed at 0.006 in. in the engine specification table. Connecting rod bolt torque is specified at 18 lb./ft. for all 750cc units. The 1973 Triumph T150 Trident ignition timing is documented at 38 degrees B.T.D.C. using factory timing marks. This 249-page official Triumph workshop manual is the complete factory reference for the 1969–1973 T150 Trident and 1973 T150V, covering engine, chassis, and electrical specifications for the 750cc three-cylinder range.