SOHC.co.uk Forums > CB500/550

Shift shaft tiny lateral movement?

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Oddjob:
Looks too far in to me but the pic is really small and I can't expand it to see clearer.

The seal should sit flush with the casing.

JezzaPeach:
Thanks Oddjob. It’s in by 1-2 mm, the edge of the seal is just visible to the right of the tip of the arrow.

Oddjob:
TBH it looks deeper than that but pics can deceive. As Graham says there is an oil hole behind that seal to keep the gear shaft lubricated as it passes through the casing, if the seal is too far back it blocks this hole and the shaft can start to seize inside the casing and the seal doesn't get lubricated either so the edges of the seal lips wear, the internal seal spring can go rusty and fail.

I'm not saying replace it, it may not be deep enough to fully block the oil hole, just keep and eye on it and see if it starts to leak. If it does, replace and don't make the same mistake next time. Live and learn, at least it's not an expensive mistake.

JezzaPeach:
Understood now good call thanks Oddjob.

JezzaPeach:
PS any idea how far back the oil hole is? then I can judge it as I can recall the thickness of the seal.

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