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Yes, and the rear fender.  Once you get the rear wheel off the ground, and remove the caliper, lower the back end down 'till the tire is touching the ground,  take off the big nut on the axle, and slide the axle part way to the left. take the 4 nuts loose/ then off and the rear wheel will come off with the final drive still attached. The sliding joint on the prop shaft needs to be greased...not just a little, a lot! Be prepared, 'cause once the 4 nuts are loosened, oil will run out of the swing arm tube. In a perfect world, there should be no oil in this tube, that's what the seal and o rings are for. While it's apart, drain out the old gear oil and make sure you fill it correctly when you reassemble it. I would estimate this as a 2 hour job....ymmv. Remember, if you don't feel comfortable doing a job, don't do it unless you have someone there with you that knows what's going on. I would not be afraid of this, but I was an ASE Master tech for 45 years, and this isn't much different from a car.

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Topic summary

Posted by Petemoss

- June 28, 2013, 09:50:15 AM

Will I need to remove the rear tire to replace the O rings?

Posted by Troll

- June 28, 2013, 07:35:40 AM

The o ring leaking fills the drive shaft tunnel with oil until it drips out. The boot doesn't seal anything in, just dirt out.

Posted by Petemoss

- June 27, 2013, 19:56:11 PM

Quote from: Troll on June 27, 2013, 19:26:06 PM
It's probably NOT the seal. There are 2 "O" rings that seal the ends of the sliding joint at the drive end of the prop shaft. The wrench at my Dealer told me that they replace these rings every time they pull the final drive off because they will leak and cause this exact problem. They recommended pulling the drive and lubing the slider joint every time you replace the rear tire. If I had to bet, I'd say it's the one at the end of the pinion adapter, but you should replace both while you are in there greasing the sliding joint.

Is this the diagram of the final drive that bolts to the rear tire? Because it seems to be leaking at the boot. MThe coil spring under the boot was off and we reattached it and took the bike for a ride. It didn't spray the rear tire with oil. Could that be the problem? Also the final drive was hot to the touch after a 20 minute ride.

Posted by Troll

- June 27, 2013, 19:26:06 PM

It's probably NOT the seal. There are 2 "O" rings that seal the ends of the sliding joint at the drive end of the prop shaft. The wrench at my Dealer told me that they replace these rings every time they pull the final drive off because they will leak and cause this exact problem. They recommended pulling the drive and lubing the slider joint every time you replace the rear tire. If I had to bet, I'd say it's the one at the end of the pinion adapter, but you should replace both while you are in there greasing the sliding joint.

Posted by Petemoss

- June 27, 2013, 18:45:55 PM

I'm pretty sure I'm leaking final drive oil and I'm mostly sure it's leaking from here.

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