| Diagram | Fig. 5 — Gearbox: Shell, Gear Cluster, Mounting Bolts, Adjuster and Countershaft Sprockets · ref 20 |
| Subsystem | gearbox |
| Listed in parts books | 1975 |
Norton Bush, 1st Gear
A 1st gear bush from the gearbox internals, part number 04-0046.
This is a 1st gear bush out of the gearbox, listed in our records under part number 04-0046. It shows up in the gearbox figure alongside the shell, gear cluster, sprocket, and mounting bolt parts, which places it inside the transmission assembly proper rather than in the outer casings.
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A bush like this rides between a gear and its shaft, taking the rotating load so the gear itself doesn't wear against bare metal. Once it wears oversize you'll usually notice play or noise in that gear before anything else in the box lets you know something's off.
Our catalog record for this one is thin — it only turns up in a single listing, tied to 1975. If you're matching this against your parts book, check it against the other gearbox internals before you order, and give us a call if you want us to confirm fitment.
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