Other Stuff > Misc / Open
Measuring O-Rings
AshimotoK0:
Sounds pretty spot on to me Ken. What's the purpose of the countershaft 'O' ring ..what is it sealing or is it used as a damper. .. can't say I remember it on mine ..oh dear.
Oddjob:
It really hides Ash, it's a seal between the gear and the collar the oil seal goes around IMO. I think it's there to stop any oil creepage happening under the collar, which isn't part of the shaft BTW, it's just pressed on.
AshimotoK0:
I don't think I took that bearing off the countershaft. My original countershaft had the dreaded needle roller break up that occured on the early K0s and I got a replacement with a nice bearing off Bryan. That's why I wont have seen that 'O' ring I suspect.
Oddjob:
I've only ever replaced that bearing once, on my current restoration bike. Didn't need it, just did it because I was changing every bearing. Replaced the oring as well, might as well if you're in there. It's thin, that's about all I remember about it. Wasn't a problem to change BTW, just knocked the old bearing off in a vice and fitted the new in reverse. Didn't even need heat.
Just sorting some stuff out with the manufacturers and I'll get some orings ordered. Lead time is 5-6 weeks for some of the rings. You can get a Viton ring that's been peroxide cured, something for the food industry I believe, some rings are over £14 a ring when you need that curing. Thank god we don't need that method.
AshimotoK0:
Try getting Chemraz 'o' rings Ken ...mega money!
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