SOHC.co.uk Forums > CB500/550

Clutch won't disengage.

<< < (3/3)

Bryanj:
You will never push hard enough by hand to move the clutch, lots of mechanical advantage in the system to increase leverage

philward:
You may have already done this Andy, but check the CMSL schematics (link below basedon UK 550F2) for checking you have all the parts in the correct order.

https://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/partslist/E08.html#.YNd-U-hKjWU

https://www.cmsnl.com/honda-cb550f2-super-sport-550-four-1977-england_model17121/partslist/E07.html#.YNd-hehKjWU

When you say it won't disengage, do you mean when the engine is running - i.e., it stalls when you put it in gear (because the clutch plates are stuck together). If so, (if you havn't already tried) try using the kick start with the clutch lever pulled in - it may then free up

andy120t:
Thanks Phil I've only identified a missing thrust washer. Other posts suggest that could have been installed behind the clutch basket so I'll dismantle again and check.

This video https://m.youtube.com/watch?v=JhTf7cBeGcs

..makes it very clear exactly what each clutch part connects to, which I wasn't 100% clear about, so might be useful for others. I certainly hadn't understood the detail of how fibre and steel plates linked the different parts of primary drive and gearbox...just always knew that that was what the clutch 'did'!

I still don't understand what the CB550 clutch pushrod ( the rod with ballbearings on ) is pushing. This video is clear, as it pushes from the left so simply pushes the pressure plate outwards ( to the right of the engine). On my engine the rod is pushing in from the right, so how does that inward action push the plates outwards? Or are they disconnecting inwards?

My lever, when correctly attached to the clutch, is almost impossible to move, so if the clutch disengages inwards, then maybe I have something incorrect or stuck behind the basket.

Bryanj:
The clutch "inner" that the steel plates are splined to is in two parts, the pressure plate that you cant see has 4 posts that go through 4 holes in the hub with the springs round the posts held by washers and bolts, now the pressure plate has teeth on the inside that have to mesh with the teeth on the hu but THIS DOES NOT HAPPEN in every position of the posts in the holes but only 2 and this could well be what you have done wrong.
Hope you understand that explanation, piece of pee to show you but a swine to describe

Navigation

[0] Message Index

[*] Previous page