The rear sprocket on my 1979 Honda CM400T motorcycle has noticable side to side play. The 4 rubber bushings, and the 4 triangular shaped aluminum studs seem to be in good condition. How much should there be? How tight should the bushings be?
It should be not too tight but it sounds, as your chain is more than the required three loops check the chain and see how much you have extra links?
Let me know how this worked for you and please do not forget to rate my service so we are able to improve on it. The rating as follows 1 the service was not related to the post. 2 the service was related but not did not help at all. 3 the service was to the point and somewhat complete. 4 the service was excellent and to the point.
There shouldn't be hardly any play at all. Supposed to be straigh, no wobble.
267 views
Usually answered in minutes!
I understand that there should be no play, but how do I determine if the bushings are bad?
All the bolts are tight. How do I tell if the bushings are wore out?
If you have more than a tenth of an inch of "wobble" as you manually twist on the rear sprocket, then the main bushing isert in the sprocket has worn out. The rubber cushions have nothing to do with this, they just isolate vibration and shock load. The sprocket slides onto the hub's hollow shaft, and should have a slight clearance fit. As far as I can tell, the big bushing in the center of the sprocket is not replaceable (sprocket riveted onto carrier- bushing is shrink press fit) If you measured the hub shaft, and removed the old bushing (it won't come out in one peice) you can call an industrial supply to get an acceptable DF style bushing. Heat the sprocket to 350 deg, freeze the bushing, get a shop press and install the new one- this will restore the original fit)
×