SOHC.co.uk Forums > CB750

Clutch reassembly

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K2-K6:
Ahaaaa! I get it now.

There's two different diameter clutch "friction" disc in this design.  All normal type are 151mm diameter, with that (last in) item being 148.5mm diameter as a single unique item. That one shares "tabs" locationwith the tabs on outer ring.

Its written in the manual using those words.

Craizeehair:
Right… thank you.

Now that makes more sense. I must have the wrong disks? All of the seven disks are the same outer diameter, approximately 147mm.

Craizeehair:
So I guess the question is, can I reassemble the clutch using the disks I have or do I need to find replacements for the six same sized and the one smaller disk originally used?

K2-K6:
It should be OK to assemble with those plates, it's the tabs that should be shorter so friction area will be unaffected. That may have much longer implications in that it would be desirable to research what replacement plates you could get.

Its easier to assess with it in front of me, but I'd assemble as manual says with the external ring in place, then put the outer clamp plate on (by hand and not bolt up the springs to see if that ring then floats or stays in correct place. Look to see if (without the next friction plate being correct diameter) the outer ring can now move further into the clutch basket. That would tell you if that larger diameter plate, the next one back, was important in keeping this from happening. 

Exploratory loose assembly to find out more, in other words.

Craizeehair:
Well it sits in there nicely, nothing moves about or feels like it’s going to float around or move position etc…

My initial thoughts are that it seems fine?

I think I will leave it at that for now, I’m still waiting on some bits to arrive but I think I will reassemble when they get here and try that.

Thank you

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