| Diagram | Fig. 3 — Engine: Contact Breaker, Timing Cover, Oil Pump, Oil Pressure Relief Valve · ref 25 |
| Subsystem | engine bottom |
| Listed in parts books | 1971–1973 |
Norton Oil Pump Worm Gear
Worm gear from the oil pump drive train, located in the timing chest area of the engine.
NM.24733 is the worm gear from the oil pump drive, sitting inside the timing cover area where the pump takes its drive off the engine. It's part of the gear train that turns the oil pump gears, and it shows up in the catalog alongside the contact breaker, timing cover, and oil pressure relief valve parts, which tells you where in the timing chest this piece lives.
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The catalog record has this part appearing across a couple of entries spanning 1971 to 1973, but it doesn't spell out which specific models those cover, so don't assume fitment off displacement or model name alone. If you're rebuilding a timing chest and this worm gear looks worn or chewed up at the teeth, it's worth checking the mating gear it drives at the same time.
We don't have a lot more detail on this one beyond its place in the oil pump drive train. Give us a call with your frame or engine number and we'll confirm it's the right part before you order.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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