1945-1955 Triumph Speed Twin / Thunderbird / Tiger Workshop Manual Parts-Reference

1945–1955 Triumph Service Manual Documentation

• Covers 1945–1955 Triumph motorcycles, including the Speed Twin (5T), Thunderbird (6T), Trophy (TR5), and Tiger (T100/T110) models
• Official Triumph Engineering Co. Ltd. publication, Part No. 99-0836, published April 1964
• Contains 36 detailed exploded-view diagrams, technical component indexes, and 12 engine/transmission timing charts
• File link appears in your order confirmation straight away
• Stored against your account so you can retrieve it after a hard-drive loss
• Page spreads stay legible when printed at original size
• Indexed PDF search covers every chapter and appendix
• This 1964 reissue serves as the definitive reference for the post-war classic British motorcycle collection range, documenting both rigid and swinging arm variants

Engine and Transmission Walkthrough

This manual provides extensive technical documentation for the servicing of the Triumph O.H.V. twin engine platform. Chapters detail the complete dismantling, inspection, and assembly sequences for the crankcase, crankshaft, connecting rods, and the cylinder head assemblies, including critical clearance data for valve timing and piston ring gaps. The documentation further addresses lubrication system maintenance, explaining the operation of the twin plunger oil pump and the indicator system.

The transmission section focuses on the four-speed gearbox operation, outlining the gear selection mechanism, camplate function, and clutch assembly details. Users will find data on primary chaincase maintenance, sprocket configurations for sidecar or solo setups, and the necessary procedures for handling the mechanical breathers, timing gears, and alternator/magneto ignition systems characteristic of this era.

Technical Data Preview

Specification highlights include specific compression ratios of 7:1 to 8.5:1 and bore-to-stroke ratios for the various 500cc and 650cc displacements. Cylinder head bolt torque is documented at 18 ft. lbs. throughout the assembly sections. Engine displacement is 498 cc (30.5 cu in) as the engine cylinder volume.

Primary chain adjustment is listed at 1/2 inch in the primary chaincase specification table. Crankshaft timing for the TR5 and T110 models is set at 35° B.T.C. as listed in the fully advanced ignition timing schedule. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. Learn more about how factory workshop documentation is structured.

An official 213-page Triumph workshop manual covering the 1945–1955 Speed Twin, Thunderbird, Trophy, and Tiger models, documenting engine, gearbox, electrical, and chassis specifications for the iconic British twin-cylinder range.