| Diagram | Fig. 7 — Gearbox: Inner Cover · ref 4 |
| Subsystem | gearbox |
| Listed in parts books | 1975 |
Norton Oil Seal, Gearshaft
Oil seal for the gear change cross shaft on the Norton Commando gearbox inner cover.
This is an oil seal for the gear change cross shaft, listed in the parts book under Gearbox: Inner Cover and Gear Linkage, Chains, Alternator, Engine Sprocket. It's a Norton part, not Triumph, and the catalog record ties it to the Commando lineup rather than any of our unit or pre-unit Triumph twins.
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The seal sits where the gearshift cross shaft passes through the gearbox inner cover, keeping oil inside the case while the shaft pivots with each gear change. It's a small part but an important one for keeping the gearbox dry and the linkage working cleanly.
Our catalog only shows this appearing in 1975 listings, so if you're chasing this for a different year Commando, give us a call and we'll confirm before you order.
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