SOHC.co.uk Forums > CB350/400

Clunking noise from front sprocket area.

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hairygit:
As mentioned earlier, while the chain was off did you check EVERY link for stiffness or binding? It only takes one to make quite an alarming noise. The fact the noise isn't happening when the sprocket is rotated without the chain really seems to point to an issue with the chain. With the sprocket cover off, rotate the wheel with the chain on, and do it slowly, when you hear the noise, mark the outside of the chain with chalk or similar where it is in contact with the sprocket. Continue rotating, and if the noise occurs again when the marked part of the chain is on the sprocket, that part of the chain needs careful inspection.
--- Quote from: Bradders on May 07, 2019, 06:05:08 PM ---Evening all. Still have a clunking noise from the front sprocket area. Have taken the chain off to give it a good lube and then rotated the sprocket and the noise stopped. There seems to be a fair amount of play when I wiggle the sprocket. Is that normal?

--- End quote ---

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Bradders:
Thanks for your replies. That’s very reassuring about the play in the sprocket. Thanks. I did check the links but I will do them again tomorrow and use hairygit’s method. Am I right in thinking the clip that joins the link should have the open end facing forward? Just watched a YouTube clip with the open end facing backward!

taysidedragon:

--- Quote from: Bradders on May 07, 2019, 07:13:24 PM ---Thanks for your replies. That’s very reassuring about the play in the sprocket. Thanks. I did check the links but I will do them again tomorrow and use hairygit’s method. Am I right in thinking the clip that joins the link should have the open end facing forward? Just watched a YouTube clip with the open end facing backward!

--- End quote ---

The closed end must face in the direction of movement of the chain! That is, facing forward on the top chain run. Open end faces backwards.

Bradders:
Thanks taysidedragon that’s how I had had it. This guy on YouTube had it the other way round.

taysidedragon:

--- Quote from: Bradders on May 07, 2019, 08:02:41 PM ---Thanks taysidedragon that’s how I had had it. This guy on YouTube had it the other way round.

--- End quote ---

But you said the YouTube clip had it right!

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