Chaincase bearing failure

[Newyamahaowner]

anyone else have this bearing go bad

 

[cannondale27]

In FAQ. Bunch of reading but I would recommend switching to the 16 setup. Shaft and all or getting the better wobble bearing.
http://www.ty4stroke.com/threads/busted-chaincase.134857/

And this for the 16 shaft
http://www.ty4stroke.com/threads/2016-5-late-build-viper-changes.137648/

 

[Newyamahaowner]

Oh if your in Canada and past one year no warranty even if you have the extended warranty
And I am put 2016 parts in it with the new bearing and shaft

 

[09nytro]

Yes , I have done several of them , that's why it's a very good idea to pull chain case apart and check everything out ... That upper bearing been a problem with the cats since 2012 ...

Highly recommended to replace that bearing every year or at around 3000 miles ...

 

[cannondale27]

Yes , I have done several of them , that's why it's a very good idea to pull chain case apart and check everything out ... That upper bearing been a problem with the cats since 2012 ...

Highly recommended to replace that bearing every year or at around 3000 miles ...

I know. Seen it too. I am really pushing it with over 6000 mi on it. Spring I will do the updated shaft and best bearing I can find.

 

[09nytro]

It may look good when you take cover off , but it doesn't take long to come apart ... That bearing is cheep for sure ......the shafts are so far apart not much oil gets up there , not unless you use gear lube but that stinks after it gets warm ....

 

[yamaha06]

Is it a big job to replace this bearing?

 

[Notenoughtoys]

Does the bearing make any weird noises when slowing down or accelerating when it is going bad or do they just usually let go with no warning?

 

[Dinner]

How many km do you have on the sled when it failed?

 

[Newyamahaowner]

5000 km no real warning way cheaper than replacing your hole assembly at 2100 tax in

 

[ViperBill]

Mine failed at 5000 miles. I replaced the cheap china peak bearing with a much better quality skf bearing. caught mine before it came apart and destroyed the chaincase. Had a lot of pitting in the outer race. Poor quality materials.

 

[09nytro]

Really no warning they just come apart ...it's really not that bad of a job to do .. Will take 2 to 3 hours to complete... I would also order the special tool to take off the nut on jackshaft and it also helps to release the collar !

 

[cannondale27]

Really no warning they just come apart ...it's really not that bad of a job to do .. Will take 2 to 3 hours to complete... I would also order the special tool to take off the nut on jackshaft and it also helps to release the collar !

Instead of buying the tool which is not needed on 16 shaft wouldnt a chisel work since its not going to be reused anway since 16 has a clip?

 

[09nytro]

Well if you go that route , but if you are looking for a warranty job Yamaha will not upgrade to new shaft and bearing , they will replace the bearing that's in it ...

 

[cannondale27]

Right. Usually they will approve update if you pay the difference though.