Triumph Trident T150 1969–1973 Service Manual (P/N 99-0963)

• 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 the 750cc three-cylinder motorcycles
• Essential reference documenting the transition from the 4-speed gearbox to the 1973 5-speed configuration

Inside the Manual

This factory manual gives you the exact technical breakdown needed for the late-model T150 series. It walks you through everything from basic motorcycle identification and frame numbering to complex sub-systems. You get detailed sections on the lubrication system, engine internals, transmission, and electrical setup. Whether you are pulling the engine unit, rebuilding the cylinder head, or adjusting the primary chain, the layout makes finding the right factory procedure fast. Always review standard shop safety protocols before handling heavy engine components or electrical systems to prevent injury.

Key Technical Data

Factory-accurate data is critical when working on vintage British motorcycles. This guide delivers all major engine and chassis specifications, including precise torque settings for the crankshaft, connecting rods (18 lb./ft.), and cylinder head fasteners. Need factory clearances? You will find clear tables for pistons, valve guides, and camshaft journals. The manual also covers the lubrication system extensively, detailing oil pressure settings and seasonal grade recommendations. Specifics like the 0.006 in. inlet valve clearance and 38 degrees B.T.D.C. ignition timing are explicitly documented to ensure a precise rebuild.