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Discussion Starter #1
I finally got around to changing the countershaft oil seal and as I posted previously, when I removed the sprocket to access the seal I found that the sprocket nut wasn't pulling everything up hard (the nut come loose with a short ratchet and a standard 'grunt'). This I now believe was the cause of the oil leak in the first place.
On cleaning everything up prior to reassembly it was apparent that the lock washer had moved out of position slightly when it was last assembled. The problem may even go back to build because the bike is still running the original chain and sprockets. Basically the slots on the lock washer that are supposed to mate with the countershaft splines were slightly out of wack which turned them over as the nut was pulled up, this is probably the reason why the assembly had come loose over time.
Having sorted that out I put everything back together and torqued up the nut.
The question I have for the forum gurus is, the end float that was apparent on the countershaft previously is now gone. I am assuming that this is normal and was only evident before because of the issue with the lock washer/nut. Is everything OK or should there be some end float after reassembly?
 

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Discussion Starter #3
Thanks Donsy. I assumed that the action of tightening the nut would draw the countershaft shoulder up against the inner bearing race and at the same time pull the sleeve and sprocket against the outer side of the inner bearing race, thus locking the whole assembly together. I wanted to make sure I wasn't missing a trick.
 
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