Clicking from rear hub assembly
 

I noticed last night that there's a distinct clicking coming from my rear hub assembly somewhere...

I had this on my 748 and it was a circlip that holds in the assembly turning in the swingarm and causing wear in the groove in which it should sit on the procket side (if I remember correctly what the dealer told be - it was 4 years ago!).

Does this sound familiar to anyone?

Can anyone think of something else it may be?

I'm booked on the CSS day next Monday and need to get this sorted prior to then so I'm looking for ideas of what I might be looking for before I start stripping it down tonight.

Cheers

Giles

I've had the same on mine, where the circlip groove wears and it all starts backing out.

You can replace the sprocket flange with the later design which replaces the circlip retaining method for a spacer instead.

Cost from Ducati is around £105 for the sprocket flange and spacer, or have a phone around the breakers as I got mine for 30 quid.

Don't know if this is definitely what it is though - I had loads of swarf on the wheel and hub when it first started happening on mine. More info here:
http://ducatisportingclub.com/contro...d.php?tid=6972

Check your chain for tight spots and also check the rear sprocket as well - the chain might be catching if the wheel bearings or hub is worn and it's gone out of alignment.

Other than that I'd pull the assembly apart and check/clean everything before reassembling and checking it again.

Good luck!

Check also the cush drives haven't started to back out of the sprocket itself. This will show itself as swarf on the wheel also.
Another check is to make sure both the wheel, and sprocket mount nuts are tight. They do/can come loose.

Can\'t get the hub nut off!!!
 

That's a good start - 41mm socket, torque wrench, other half sitting on the bike with the brakes on and all that happened was my eyes watered and the back wheel lifted off the floor!!!

Methinks that might be just a little on the tight side!

Had a peek doen the back of the carrier though an it looks like on of the cush bushes is moving out of the back. It's not touching the chain adjuster ring yet, but only has about a 1mm gap at the moment...

Will it stay put for a while or is this an immediate replacement situation? Is there a way of coaxing it back into the carrier?

Any ideas on getting the hub nut off - I might just have to jump on the torque wrench...!!!!

Giles

You'll wreck your torque wrench if you use it to try and undo nuts like that. Get yourself a 36 inch breaker bar from Halfrauds.

Once the cush drive has started backing out, then it really needs replacing. The clicking could well be the outer sleeve catching the hub??
As for getting the nut off, Pauls's right. You'll bust the wrench. Get a breaker bar or better still, run it down to the local tyre bay and get them to run it off with an air gun. Nip it back up and then remove the whole lot at home.

Hi guys..

just FYI, and further to Antonyes point, kep me in minf for sprocket flange and spacer kits.

I have genuine ducati ones that I can do for £60 instead of the £105 list..

Cheers
Nat

Nice one Nat - certainly cheaper than Ducati and easier than phoning round the breakers for hours on end!

Clicking Hub Update
 

OK - so the noise was a cush drive collar just starting to touch the chain adjuster ring.

I bought a set of 5 new bushes last Thursday (having shopped around 5 dealers to find one who had any in stock!) and set about fitting them on Saturday evening, ready for Rockingham yesterday.

4 went in fine, but the 5th new bush had no allen-head in the back of it - it was totally round - and therefore couldn't be tightened in place.

Not to worry (I thought) I'll put the best of the old bushes back in and sort the odd one out after Rockingham, as it was too late to get hold of another bush before Monday.

1 session at Rockingham and old bush gave out, the collar moved out of the sprocket and the resulting swarf is stuck all around my wheel and swingarm!

Now in search on one new bush and writing to Ducati UK about the quality control of spares - and the cost of having to hire a CSS bike to finish my day yesterday due to the faulty new part...

Still, CSS is a top day and I can recommend it to anyone who wants to learn how to corner better and remove much of the fear of falling off that cornering can cause!

Is it just that one bush causing the problem?

Only new bushes won't fix the problem if the
groove that retains the circlip in the sprocket flange is worn - they will just keep backing out!

Basically you can keep replacing them but it will still keep happening.

You need a new sprocket flange (of the updated type that uses a spacer rather than a circlip) to fix the problem and stop it happening again ... as posted above!

[Edited on 15-6-2004 by antonye]

or.........when you fit the new bushes, before fitting the assembly to the bike put 3 or 4 dot punches around the circumference of each bush/carrier hole. I've also used bearing retainer in the past which seems to do the job to. Makes them a real pig to get out then.
If you can't get the stripped one out. Remove it with the carrier, get it in a vice and undo it that way.

?????????????
 

I'm now confused!!!

The circlip groove looks OK - the circlip can be rotated, but is not loose and moving in and out at all.

The cush drive bushes/silent running blocks are retained by nuts on the outside of the sproket carrier, so why would a worn circlip groove make the collars detatch from the rubbers and move out of the back of the sprocket?

That's the problem - while it looks ok, chances are the it is worn out of spec enough to start backing out. This is what happened to me. Everything looked fine and went back together fine when replacing the chain & sprockets. I even had a quick release carrier with the lip in it to stop them backing out but it still went!

Just keep an eye on it as it might happen again...