Norton Commando Engine Rebuild. Part 9: Removing the Engine Sprocket

Classic Motorcycle Mechanics with Chris Rooke

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This is one of a series of videos covering the full dismantling, restoration and rebuild of a Norton Commando engine and gearbox. This particular video shows the front engine sprocket being removed from the crankshaft in the Primary Chaincase - and what a job it proved to be! The sprocket really, really didn't want to come off despite using the correct sprocket puller, it took a lot of tension and a lot of heat before it finally let go - with quite a bang!

Опубликовано:

14 окт 2024

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Комментарии : 8

@johnAdamson-uk1dd 8 месяцев назад

The engine sprocket can be a real pain to get of I have had the same problem a number of times, the solution I have found to work well is to use an impact driver at a low torque setting on the extractor nut, it works well and has the advantage that if you are not rebuilding the engine you don't have an issue with the heat damaging the crank oil seal. I must say that even though I have removed ten's of engine sprockets it still makes me jump when they finally break free.

@dougmclaren4328 8 месяцев назад

Bloody hell Chris, a bit of a tense moment there. Heat is your friend.

@Chris.rooke150 8 месяцев назад

It certainly woke me up!!

@stephenbaron5681 8 месяцев назад

Have you considered using you impact wrench. Mine has worked well for me.

@ianlawrie919 8 месяцев назад

Goodness me! You certainly know how to make us nervous 😮👍👏👌

@Chris.rooke150 8 месяцев назад

😁😁😁

@gregbrowne8741 7 месяцев назад

what is the thread in the front sprocket?

@Chris.rooke150 7 месяцев назад

I believe it's Whitworth. (I can't remember exactly but having looked at video No 6 of that nut being removed it looks like I'm using a Whitworth socket)