| Also known as | T4661 |
| Diagram | Fig. 11 — GEARBOX SHAFTS AND GEARS · ref 21 |
| Subsystem | gearbox |
| Listed in parts books | 1973–1974, 1976–1980, 1983, 1985 |
Driving dog
A layshaft driving dog for the five-speed gearbox cluster, engages the selected gear to lock it to the shaft.
The 57-4661 driving dog is a gearbox internal, part of the layshaft assembly in the five-speed cluster. It shows up in the parts books under GEARBOX SHAFTS AND GEARS and the broader GEARS - SHAFTS - SELECTORS - STARTING MECHANISM figure, and the older parts book form of this same piece was numbered T4661 before the modern 57-4661 stamping took over.
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A driving dog engages with the corresponding dogs on adjacent gears to lock a selected gear to the shaft when the selector forks move it into position. It's a wear item worth checking whenever a gearbox is stripped for inspection - rounded or chipped dog teeth are a common cause of a five-speed box jumping out of gear.
This one turns up across catalog listings from 1973 to 1985, so it spans a fair number of production years in the five-speed layshaft gearbox. Check your parts book against the actual gearbox internals before ordering, since dog and gear combinations changed over that run.
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