| Also known as | T934 |
| Diagram | Fig. 8 — GEARBOX SHAFTS AND GEARS · ref 14 |
| Subsystem | gearbox |
| Listed in parts books | 1960–1962 |
Speedo drive gear (1960–62)
Speedo drive gear for the gearbox, catalog PN 57-0934, listed for 1960-62 machines (also known as T934).
This is the speedo drive gear, part number 57-0934, listed in the gearbox shafts and gears section for machines from 1960 through 1962. You'll find it in the older letter-prefix parts books as T934 - same physical piece, just the earlier numbering convention Triumph used before the modern PN system took over.
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The drive gear rides on the gearbox and is what takes drive off the box to run the speedometer cable up to the head. If your speedo's reading wrong or not moving at all and the cable itself checks out, a worn or wrong-ratio drive gear is a common place to look next.
Our catalog record ties this one specifically to the 1960-62 span, so if your machine falls outside that window, check the gear count against what your box calls for before ordering - Triumph ran more than one tooth count and ratio through this era of gearboxes.
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