Topic: Where does this O-Ring go? Rear Hub 1972 CB500

[jmelche2]

Not sure if this O-ring goes on before or after the sprocket.  Looking at the parts diagram, it looks like the sprocket goes on first, then the o-ring.  Just want to make sure.

Thanks!

[strynboen]

just have this scan..dont think it helps ???is there 2 o rings like nr 20...not shure this photo are a 500 or 550..

[jmelche2]

Thanks but your attachment is too small to read.  It is #22 in the photo I have attached.

[strynboen]

think my are for 550..so dont use it anyvay

[jmelche2]

Bump

[s7paul]

The sprocket must sit flat against the hub, which it may not do if the O ring is underneath it.  I'm virtually 100% sure the O ring goes on after the sprocket, and acts as a seal between the sprocket and the plate (item 2 in your diagram).

[jmelche2]

Agreed.  I found a photo on Sohoron's build thread where the o-ring goes on after the sprocket. 

Thanks!