| Also known as | 04.0019 |
| Diagram | Fig. 5 — Gearbox: Shell, Gear Cluster, Mounting Bolts, Adjuster and Countershaft Sprockets · ref 21 |
| Subsystem | gearbox |
| Listed in parts books | 1971–1973 |
Norton GEAR L/S 2ND 24T PRE 74
Layshaft second gear, 24-tooth, pre-1974 gearbox cluster piece, PN 040019.
This is the layshaft second gear, a 24-tooth gear off the gearbox cluster, listed in the parts books under 040019 (also written 04.0019). It sits inside the gearbox shell along with the rest of the cluster, mounting bolts, adjuster, and countershaft sprockets, and it's the piece that carries second gear drive on the layshaft.
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The catalog marks this as the pre-1974 version of the gear, so if your gearbox dates from before that changeover this is the correct number to check against. Our records show it turning up in catalog entries spanning 1971 to 1973.
Gearbox work is not a job to guess on. If you're pulling the cluster apart to replace a worn or chipped tooth on second gear, check the rest of the cluster while you're in there, and call the shop if you're not sure this is the right gear for the box you've got open on the bench.
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