Triumph Triumph Speed Twin, Thunderbird, Tiger 100, Tiger 110, Trophy TR5, Trophy TR6, and Bonneville T120 1956–1962 Workshop Manual (PN 99-0837)

• Covers 1956–1962 Triumph Speed Twin, Thunderbird, Tiger 100, Tiger 110, Trophy TR5, Trophy TR6, and Bonneville T120 motorcycles
• Official Triumph Engineering publication No. 17 (reprinted Nov. 1973, PN 99-0837)
• Contains 36 detailed exploded-view diagrams and indexed parts lists for major engine and transmission assemblies
• 194-page document delivered as an instant download the moment payment clears

Engine and Transmission Technical Overview

This documentation details the mechanical systems of vintage Triumph twin-cylinder motorcycles. It provides exact technical descriptions for the dry-sump lubrication system, covering pump operation and pressure relief valve maintenance. Whether you are tearing down the crankcase or assembling the crankshaft and connecting rod groups, these factory references streamline your daily workflow in the shop. Engine data outlines valve timing diagrams, ignition setup for both magneto and coil systems, and vital Amal Monobloc carburetor specifications. Before beginning any teardown, ensure your workspace is properly ventilated and all ignition sources are secured when handling vintage fuel systems. Gearbox references clarify the positive-stop selection mechanism and clutch shock absorber adjustments.

Maintenance and Specification Data

Rely on comprehensive maintenance tables to verify service intervals for oil changes, chain tension, and steering head bearing lubrication. The data sheets provide critical identification details for proprietary equipment like Amal carburetors, Lucas electrical systems, and Dunlop tires. Key tolerances are clearly listed, noting the T110 inlet valve clearance at 0.002 inches and a primary system engine oil capacity of 5 pints. For optimal output, Bonneville T120 ignition timing is specified at 39° before T.D.C. Because this manual is available via instant download, you can immediately access these OEM specifications and get right to work on these classic British machines.