Small oil leak into final drive tube.

[Tsiklonaut]

While checking i found some small amount of oil leaked into shaft tube from final drive housing. It looked an old oil, is that normal for 30Kkm bike? You see it here:

Everything looked as brand new indeed, universal joints, seals, bolts, grease etc etc. Or should i replace the seal that goes to shaft drive axle (the one you see around it)? That needs a special tool, right? That small dumpling of oil makes me a bit worryed...

 

[boxer]

If the oil is coming down the swing arm and collecting in the rubber boot then I'd guess the seal on the gearbox output shaft in leaking.

However, I think [hope!] you'll find that the oil is seeping past the final drive input shaft seal. In the UK this cost me about 45GBP to have fixed after I'd removed the final drive myself and posted it to Sherlocks.

Mine leaked for years before I fixed it and as long as the oil level in the gearbox or final drive doesn't fall I don't think it a priority job. I did mine when the FD was off for the replacement of the FD pivot bearings.

It's a common problem that almost falls into the "they all do that sir" category.


Russ.

 

[BiG DoM]

If the oil is coming down the swing arm and collecting in the rubber boot then I'd guess the seal on the gearbox output shaft in leaking.

However, I think [hope!] you'll find that the oil is seeping past the final drive input shaft seal. In the UK this cost me about 45GBP to have fixed after I'd removed the final drive myself and posted it to Sherlocks.

Mine leaked for years before I fixed it and as long as the oil level in the gearbox or final drive doesn't fall I don't think it a priority job. I did mine when the FD was off for the replacement of the FD pivot bearings.

It's a common problem that almost falls into the "they all do that sir" category.


Russ.

I was told it was normal and not to worry as it due to 'self lubricating' bearing design.

 

[Tsiklonaut]

I was told it was normal and not to worry as it due to 'self lubricating' bearing design.

I thought that too... coz it's very small amount.

 

[sigood]

I had that too and sent it off to sherlocks for input seal replacement.It didn't look right and worried me a bit so thought i better get it done.I suppose if you keep an eye on F/D oil it shouldn't be a problem,but don't quote me !