| Also known as | 57-3857, T916 |
| Diagram | Fig. 8 — GEARBOX SHAFTS AND GEARS · ref 6 |
| Subsystem | gearbox |
| Listed in parts books | 1960–1962, 1964–1965, 1967–1970 |
Mainshaft 2nd gear (20T)
Mainshaft second gear (20-tooth) from the four-speed gearbox cluster.
This is the mainshaft second gear out of the gearbox, a 20-tooth gear that rides on the mainshaft as part of the internal gear cluster. It shows up in the gearbox shafts and gears section of the parts book, right alongside the other mainshaft and layshaft gears that make up the four-speed cluster.
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On the older side of the parts numbering this one was known as T916, and it's also been catalogued under 57-3857 — same physical gear, different number depending on which edition of the book you're working from. If you're rebuilding a box and matching parts against an older diagram, keep both numbers in mind.
We don't have more detail on this one beyond what the gear-cluster listing tells us. If you're sorting out which gear goes where in your cluster, bring your old parts or the shaft down and we'll help you match it up before you order.
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