chain jumping when in gear...

[Dangle_kt]

hi everyone - little update.


I took the rear wheel off - defo not the bearings or the cush drive - there is no slop[ in either.


Checked the front sprocket - no play either.


was about to put it all back together when I pulled on the swingarm - DONK.


I think it is the swingarm bearings, there is a good 5mm of lateral and vertical play - but only when pulled to the chain side - obviously ran the chain too tight at some point and goosed the bearings.


Anyone done the swingarm bearings? Tricky job?

[Fazerider]

I did it a few months back, can't recall any difficulties though I was a little disappointed that the aftermarket ones I bought still resulted in detectable lateral play. Don't worry too much about vertical play... the multitude of small clearances in the suspension linkage all add up to give several mm of slop.
At least you've solved the mystery. :thumbup

[keratos]

WD40 degrades the o-seals on chains ?????

I've just had the 'tight spot' stiff link issue, and you won't necessarily see or hear it jumping when moving the wheel by hand.The chain will jump on the centre stand anyway simply because of the momentum of the wheel with no weight or pull on it, the chain is just playing catch up.When you pull the clutch in you're not pulling the wheel any more, it's just rolling on it's own until it stops.Move the chain very slowly and examine each link by hand, on my chain the one that was stiff was slightly offset and looking out of place compared to the others.Whereas the others were all nicely flat in a line this one link was slightly pointing downwards.If you find one (or more), then use pliers on the edge of the outer link to try and move it from side to side, it will feel much tighter compared to the others, presuming the chain is in generally good condition, and kept well lubricated?I've been lucky for now and managed to free my link up by constant lubing and one night of soaking that part of the chain in WD40, then re-lubing daily and it seems fine at the moment, but i've bought a spare link if it plays up again as the chain has low mileage on it.Obviously worse case scenario is new sprockets and chain, depending on age, condition and mileage!!