Final Drive Seal Replacement and Staintune hack up pictorial

[greg the pole]

Much thanks to the members that offered their spare parts for my fix.

moar bloggings here: http://thetenerist.wordpress.com/2013/09/24/rear-shaft-drive-seal-replacement-and-staintune-pipe/

 

[Mark R.]

Final Drive Seal Question

Looks like the seal where the wheel hub meets the final drive is leaking. I have the seal and o-ring on order. Can anyone tell me if they have changed this seal and what to look for. Seems like you just un-bolt the flat cover back there and press a new seal into the cover. Does anything fly out when you do this? Should I do it on my work bench, or just do it on the bike?

Inquiring minds want to know !!!

Thanks.

Mark R.
Albuquerque, NM

 

[Checkswrecks]

Merged Mark's new thread with Greg's old one because Greg gave pictorial and excellent how-to.

 

[WRW9751]

Mine has leaked from time to time. Mostly after a good thrashing in the dirt and rocks. I've used a Seal Saver to clean around the inner part of the seal. Pretty much takes care of the problem. However i have done it several times and it disappears for a while and then returns after a good day of punishment! Have thought about having it replaced and wondered if you could do more damage than good?

 

[Mark R.]

Mine has leaked from time to time. Mostly after a good thrashing in the dirt and rocks. I've used a Seal Saver to clean around the inner part of the seal. Pretty much takes care of the problem. However i have done it several times and it disappears for a while and then returns after a good day of punishment! Have thought about having it replaced and wondered if you could do more damage than good?

I thought about using a seal saver, but I suspect that the seals are not installed with grease inside the seal lips, leading to premature wear. I am a big believer in greasing up seals when first installing them. The write-up that my thread was joined with does not really cover the seal I am going to replace, so I will just dive in and see what happens. It should be very straight forward. The seal was only $11, so I am going to just give it a go.

 

[Checkswrecks]

I thought about using a seal saver, but I suspect that the seals are not installed with grease inside the seal lips, leading to premature wear. I am a big believer in greasing up seals when first installing them. The write-up that my thread was joined with does not really cover the seal I am going to replace, so I will just dive in and see what happens. It should be very straight forward. The seal was only $11, so I am going to just give it a go.

Sounded like the seal you were addressing, but search and you will find the other seal is also the subject of multiple prior threads.

 

[RIVA]

Try this
https://thetenerist.wordpress.com/2014/09/28/yamaha-st12-inner-shaft-seal-replacement/

 

[Mark R.]

Try this
https://thetenerist.wordpress.com/2014/09/28/yamaha-st12-inner-shaft-seal-replacement/

Right on. Thanks. that is exactly what I was looking for !!

Mark R.
Albuquerque, NM